Water quality adjusting system

Abstract

The utility model relates to a water quality regulating system, which comprises a front pretreatment unit, a rear pretreatment unit and a water quality regulating unit, the RO membrane unit is communicated with the water outlet end of the front pretreatment unit and is used for treating the purified water to produce purified water; the water quality adjusting valve is used for adjusting the mixing proportion of purified water and purified water and comprises a valve body, a water distribution chamber is arranged in the valve body, a first water inlet channel, a second water inlet channel and a water outlet channel are arranged on the valve body, and the first water inlet channel and the second water inlet channel are communicated with the water outlet ends of the front pretreatment unit and the RO membrane unit respectively; purified water and purified water are mixed in the water distribution chamber and then discharged through the water outlet channel, and the water quality adjusting valve is provided with a flow adjuster used for adjusting the flow of the first water inlet channel. And the faucet is communicated with the water outlet channel of the water quality regulating valve. The water quality adjusting mode is optimized, the TDS stability of effluent and the brewing taste of drinks are improved, and the adjusting operation is simplified.

Description

Technical Field

[0001] This utility model relates to the field of fluid transport technology, specifically to a water quality regulation system. Background Technology

[0002] In the processing of beverages such as tea and coffee, the TDS (Total Dissolved Solids) value of the water used directly affects the taste and quality of the product, thus requiring specific parameters. For example, the ideal TDS value for water used in coffee is typically controlled within a relatively high range of 80-120 PPM, while the ideal TDS value for water used in milk tea is lower. If only reverse osmosis (RO) membranes are used to treat tap water, the resulting purified water often has a low TDS value, failing to meet the flavor and taste requirements for coffee or milk tea. Taking a water quality conditioning system as an example, pre-treated purified water needs to be added to the purified water to increase the TDS value, and the mixing ratio of the two types of water is adjusted to ensure that the total dissolved solids (TDS) value of the mixed water reaches the preset standard.

[0003] Existing water quality regulation systems primarily rely on pressure tanks for mixing, where purified water and pure water are directly introduced into the tank for mixing. However, this structure has significant drawbacks: because the TDS value of the mixed water can only be measured after the two types of water are completely mixed in the tank, the regulation process requires repeated cycles of refilling and draining water to bring the effluent TDS value close to the target range, resulting in low regulation efficiency. Furthermore, the TDS value of the mixed water stored in the pressure tank is easily affected by fluctuations in the influent ratio, making precise control difficult. Each adjustment also requires draining the existing water from the tank, which is cumbersome and wasteful of water resources. Therefore, how to accurately control the TDS value of the mixed water in the pressure tank by precisely adjusting the water flow rate has become a pressing technical problem that needs to be solved in existing water quality regulation systems. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art by providing a water quality adjustment system that optimizes the water quality adjustment method, improves the stability of TDS of the output water and the taste of beverages, and simplifies the adjustment operation.

[0005] The technical solution of this utility model: a water quality conditioning system, comprising:

[0006] The pre-treatment unit is used to connect to the basic water source to produce purified water;

[0007] The RO membrane unit is connected to the outlet of the pre-treatment unit and is used to treat purified water to produce pure water.

[0008] A water quality regulating valve is used to regulate the mixing ratio of purified water and pure water. The water quality regulating valve includes a valve body with a water distribution chamber inside. The valve body is provided with a first water inlet channel, a second water inlet channel, and an outlet channel. The first water inlet channel and the second water inlet channel are respectively connected to the outlet of the pretreatment unit and the RO membrane unit. After the purified water and pure water are mixed in the water distribution chamber, they are discharged through the outlet channel. The water quality regulating valve is provided with a flow regulator for regulating the flow rate of the first water inlet channel. Both the first water inlet channel and the second water inlet channel are provided with a one-way valve structure.

[0009] The faucet is connected to the water outlet channel of the water quality regulating valve.

[0010] By adopting the above technical solution, the water quality adjustment system of this utility model produces high-quality purified water and pure water respectively through the synergistic effect of the pretreatment unit and the RO membrane unit; and the introduction of the water quality adjustment valve, whose built-in flow regulator can adjust the flow rate of the first inlet channel, thereby achieving the purpose of adjusting the mixing ratio of purified water and pure water in the water distribution chamber, laying the foundation for the TDS value of the effluent.

[0011] After the mixing ratio of the water quality regulating valve is properly adjusted, the system can present differentiated water quality based on the water flow characteristics of different water usage methods: When the coffee machine pumps water, the water jet formed by its pumping action has a long range and special water flow dynamic characteristics, which will drive more purified water to be drawn out quickly, so that the TDS value of the mixed water is naturally maintained in the higher ideal range required for coffee brewing, ensuring that coffee flavor substances are fully extracted and meeting the specific requirements of coffee for water quality; while when the tap is turned on directly with a large flow of water, such as when brewing milk tea, the water jet range is short and the water flows mainly naturally. At this time, the purified water flows out slowly, so the TDS value of the mixed water will be lower than that when the coffee machine pumps water, but higher than that of purified water. This can avoid the milk tea flavor being too thin due to the soft taste of purified water, and can also adapt to the water quality requirements of milk tea, resulting in a better brewing effect.

[0012] A further feature of this invention is that the flow regulator includes a flow control plate and an adjustment plate stacked thereon.

[0013] The flow control plate is provided with a spiral groove, and the inner or outer edge of the spiral groove is set as an adjustment edge. The radius of the adjustment edge changes so that the width of the spiral groove gradually increases along its extension trajectory.

[0014] The regulating plate is provided with a water inlet hole. The width of the water inlet hole is less than or equal to the maximum width of the spiral groove. The regulating plate and the flow control plate can rotate relative to each other and are positioned coaxially. During the rotation, the flow area formed by the water inlet hole and the spiral groove regulating edge gradually increases or decreases, realizing stepless adjustment between the maximum flow rate and the flow area. The first water inlet channel and the water distribution chamber are connected through the flow area.

[0015] By employing the aforementioned further design, this invention enables precise stepless adjustment of the fluid flow rate in the first inlet channel. When purified water enters through the first inlet channel, it first flows through the spiral groove of the flow control plate, then through the inlet hole on the regulating plate before flowing into the distribution chamber. During adjustment, as the regulating plate rotates relative to the flow control plate, the fit between the inlet hole and the regulating edge of the spiral groove changes, thereby altering the size of the flow passage area. When the flow rate increases, the inlet hole gradually rotates from one side of the regulating edge into the corresponding area of ​​the spiral groove. At this time, the overlapping and connecting area with the spiral groove, i.e., the flow passage area, gradually increases, and the fluid flow rate increases smoothly accordingly. Conversely, when the regulating plate rotates in the opposite direction, the inlet hole gradually moves away from the corresponding area of ​​the spiral groove, and after complete separation, the flow rate decreases. This design not only achieves stepless flow rate adjustment but also ensures a continuous and smooth adjustment process, avoiding the sudden flow changes that may occur during the adjustment process of traditional throttling valves. This improves the stability and accuracy of flow control, meeting the needs of high-precision flow control scenarios.

[0016] A further feature of this invention is that the water quality regulating valve includes a knob cover for controlling the rotation of the regulating plate, and the valve body surface is provided with multiple scales for indicating the flow rate of the first inlet channel. The multiple scales are distributed in a circular interval, and the knob cover is provided with an indicator area for indicating the current flow rate scale.

[0017] With the above further settings, users can more intuitively understand and adjust the fluid flow rate of the first inlet channel. Rotating the knob cover causes the adjusting plate to rotate, thereby changing the relative position of the inlet hole and the spiral groove, and adjusting the size of the fluid flow area. The combination of the scale and the indicator area allows for real-time display of the current flow status, enabling users to accurately control and adjust the flow rate of the water quality regulating valve, further improving ease of use and the precision of flow control.

[0018] A further feature of this invention is that the flow regulator includes a rotary control, which cooperates with the regulating plate to form a water inlet cavity. The water inlet hole communicates with the water inlet cavity, and the water inlet cavity is connected to the water distribution chamber through the water outlet hole. The water outlet hole is located on the side wall of the regulating plate or the rotary control, and multiple water outlet holes are provided and arranged in an oblique hole shape.

[0019] With the aforementioned further design, the inlet chamber ensures that water flows smoothly from the inlet hole to the outlet hole, achieving flow throttling and noise reduction. The angled outlet hole design allows the water to flow more gently when entering the inlet chamber, reducing water impact and turbulence, thereby reducing noise generation. The multiple outlet holes design can more effectively disperse the water flow, avoiding pressure unevenness and unstable flow caused by excessive water concentration.

[0020] A further feature of this invention is that the first water inlet channel is provided with a valve plate and a deformable one-way diaphragm. The valve plate has multiple first valve ports along its circumference, and the one-way diaphragm is used to block the multiple first valve ports. When water enters the first water inlet channel, the fluid pressure compresses the one-way diaphragm to deform, thereby opening the first valve ports.

[0021] With the above-described further configuration, the first valve port on the valve plate provides a flow path for the fluid, while the presence of the one-way diaphragm ensures that the fluid can only pass through in one direction, thus forming a one-way valve structure. When the fluid enters the first inlet channel, the internal fluid pressure increases, the one-way diaphragm is squeezed and deformed, thereby opening the first valve port and allowing the fluid to pass smoothly.

[0022] A further feature of this invention is that the second water inlet channel is provided with a second valve port, a movable valve plug, and a reset component. The reset component is used to drive the valve plug to block the second valve port. When water enters the second water inlet channel, the fluid pressure can push the valve plug away to open the second valve port, thus forming a one-way valve structure.

[0023] With the above-described further configuration, under normal conditions, the reset element drives the valve plug to tightly seal the second valve port, preventing unintended fluid passage. However, when water begins to enter the second inlet channel, the internal fluid pressure gradually increases. This pressure is sufficient to overcome the elasticity of the reset element, pushing the valve plug away from the second valve port, thus allowing smooth fluid passage. This design not only ensures unidirectional fluid flow but also effectively improves the stability and efficiency of the water quality regulation system.

[0024] A further feature of this invention is that the water distribution chamber and the water outlet channel are connected via a water guiding cavity, and several partitions are respectively protruding on the opposite sides of the water guiding cavity, with the partitions on both sides being staggered along the water flow direction of the water guiding cavity.

[0025] With the aforementioned further design, the fluid, as it flows through the water guiding chamber, will follow an S-shaped flow path due to the influence of the baffle. This design not only increases the residence time of the fluid within the water guiding chamber, promoting full contact between the fluid and the inner wall of the distribution chamber, but also helps to further evenly disperse the fluid, preventing eddies or localized high-speed flow at the inlet of the outlet channel. Furthermore, the presence of the baffle effectively slows down the fluid velocity, reducing the scouring force of the fluid on the outlet channel, thereby extending the service life of the water quality conditioning system.

[0026] A further feature of this invention is as follows: the valve body includes a valve seat and a valve cover, which together form the water distribution chamber. The regulating plate and the flow control plate are stacked vertically inside the valve seat. The first water inlet channel, the second water inlet channel, and the water outlet channel are located at the bottom of the valve seat. The surface of the valve cover is provided with a torsion post adapted to the knob cover.

[0027] With the aforementioned further modifications, the valve body structure becomes more compact and easier to disassemble and maintain. The fit between the valve seat and valve cover not only enhances the sealing of the water distribution chamber but also effectively prevents fluid leakage, ensuring the normal operation of the water quality regulation system. The stacked arrangement of the regulating and flow control plates allows for more precise fluid flow regulation, which can be flexibly adjusted according to actual needs. Simultaneously, the rational layout of the first inlet channel, the second inlet channel, and the outlet channel ensures smooth fluid flow and facilitates pipeline assembly.

[0028] A further feature of this invention includes a pressure reducing valve and a water storage pressure tank. The pressure reducing valve is located upstream of the pretreatment unit, and the water storage pressure tank is connected between the outlet of the RO membrane unit and the second inlet channel of the water quality regulating valve for storing purified water. The water storage pressure tank is connected to a pressure switch, and the static outlet pressure of the pressure reducing valve is 0.05-0.1 MPa higher than the pressure of the water storage pressure tank.

[0029] With the aforementioned further modifications, the pressure reducing valve enables precise control of the water pressure entering the pretreatment unit, preventing damage to the pretreatment unit due to excessive water pressure and extending the equipment's lifespan. The introduction of the water storage pressure tank not only effectively stores the purified water after deep purification by the RO membrane unit but also ensures stable water pressure within the tank through intelligent pressure switch control, preventing water pressure fluctuations from affecting the normal operation of the water quality regulating valve. Furthermore, the pressure difference between the pressure reducing valve and the water storage pressure tank ensures smooth water flow within the system, improving the overall operating efficiency and stability of the water quality regulation system.

[0030] A further feature of this invention includes a booster pump, an emergency valve, and a water quality detector. The booster pump is connected between the outlet of the pretreatment unit and the inlet of the RO membrane unit. The inlet of the emergency valve is connected between the outlet of the pretreatment unit and the second inlet channel of the water quality regulating valve. The outlet of the emergency valve is connected between the outlet channel of the water quality regulating valve and the faucet. The water quality detector is connected between the outlet channel of the water quality regulating valve and the faucet.

[0031] With these further modifications, the booster pump significantly increases the water pressure entering the RO membrane unit, ensuring its high-efficiency operation. The emergency valve provides a backup water path in emergencies; if the main water path fails, the system can quickly switch to the emergency path, ensuring continuous water supply for users. The water quality detector monitors water quality in real time; if any abnormalities are detected, an alarm is immediately triggered, alerting users to take timely action and ensuring water safety. These further modifications not only enhance the stability and reliability of the water quality control system but also improve the user experience. Attached Figure Description

[0032] Figure 1 This is a system flowchart of a specific embodiment of the present utility model;

[0033] Figure 2 This is a structural diagram of the water quality regulating valve of this utility model;

[0034] Figure 3 This is a structural diagram of the water quality regulating valve of this utility model;

[0035] Figure 4 This is a diagram showing the internal structure of the water quality regulating valve of this utility model;

[0036] Figure 5 This is a diagram showing the internal structure of the water quality regulating valve of this utility model;

[0037] Figure 6 This is a diagram showing the internal structure of the water quality regulating valve of this utility model;

[0038] Figure 7 This is an exploded view of the water quality regulating valve of this utility model;

[0039] Figure 8 This is a structural diagram of the valve seat of the water quality regulating valve of this utility model;

[0040] Figure 9 This is a structural diagram of the valve cover of the water quality regulating valve of this utility model;

[0041] Figure 10 This is a structural diagram of the flow regulator of the water quality regulating valve of this utility model;

[0042] Figure 11 This is a diagram showing the internal structure of the flow regulator of the water quality regulating valve of this utility model.

[0043] Figure 12 This is a structural diagram of the regulating plate of the flow regulator of this utility model;

[0044] Figure 13 This is a structural diagram of the flow control plate of the flow regulator of this utility model;

[0045] Figure 14 This is a diagram showing the zero flow rate state in a specific embodiment of this utility model, where the arrows indicate the direction in which the inlet hole rotates to increase the flow rate;

[0046] Figure 15 This is a diagram showing the maximum flow rate in a specific embodiment of the present invention, where h is the maximum width of the spiral groove.

[0047] In the diagram: 1. Pretreatment unit; 2. RO membrane unit; 3. Water quality regulating valve; 4. Faucet; 5. Pressure reducing valve; 6. Water storage pressure tank; 7. Pressure switch; 8. Booster pump; 9. Emergency valve; 10. Water quality detector.

[0048] Valve body 31, scale 311, valve seat 312, valve cover 313, torsion column 3131, water distribution chamber 32, first water inlet channel 33, valve plate 331, first valve port 3311, one-way diaphragm 332, second water inlet channel 34, second valve port 341, valve plug 342, reset component 343, water outlet channel 35, flow regulator 36, flow control plate 361, spiral groove 3611, adjusting edge 36111, adjusting plate 362, water inlet hole 3621, flow passage area a, knob cover 30, indicator area 301, rotary control 35, water inlet chamber b, water outlet hole b1, water guide chamber 37, partition plate 371, rotating shaft c. Detailed Implementation

[0049] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0050] like Figure 1-15 As shown, a water quality conditioning system includes:

[0051] The pre-treatment unit 1 is used to connect to the basic water source to produce purified water. The pre-treatment unit is a conventional design that can remove large particulate impurities such as silt, rust, and organic matter.

[0052] RO membrane unit 2 is connected to the outlet of pretreatment unit 1. RO membrane unit 2 includes an RO membrane and is used to treat purified water to produce pure water.

[0053] Water quality regulating valve 3 is used to regulate the mixing ratio of purified water and pure water. The water quality regulating valve 3 includes a valve body 31, and a water distribution chamber 32 is provided inside the valve body 31. The valve body 31 is provided with a first water inlet channel 33, a second water inlet channel 34 and a water outlet channel 35. The first water inlet channel 33 and the second water inlet channel 34 are respectively connected to the water outlet of the pretreatment unit 1 and the RO membrane unit 2. Specifically, the first water inlet channel 33 is connected to the water outlet of the pretreatment unit 1 and the second water inlet channel 34 is connected to the water outlet of the second water inlet channel 34. After the purified water and pure water are mixed in the water distribution chamber 32, they are discharged through the water outlet channel 35. The water quality regulating valve 3 is provided with a flow regulator 36 for regulating the flow rate of the first water inlet channel. Both the first water inlet channel 33 and the second water inlet channel 34 are provided with a one-way valve structure.

[0054] The faucet 4 is connected to the water outlet channel 35 of the water quality regulating valve 3;

[0055] The system includes a pressure reducing valve 5, a water storage pressure tank 6, a booster pump 8, an emergency valve 9, and a water quality detector 10. The pressure reducing valve 5 is located upstream of the pretreatment unit 1. The water storage pressure tank 6 is connected between the outlet of the RO membrane unit 2 and the second inlet channel 34 of the water quality regulating valve 3, and is used to store purified water. The water storage pressure tank 6 is connected to a pressure switch 7. The static outlet pressure of the pressure reducing valve 5 is 0.05-0.1 MPa higher than the pressure of the water storage pressure tank 6. The booster pump 8 is connected between the outlet of the pretreatment unit 1 and the inlet of the RO membrane unit 2. The inlet of the emergency valve 9 is connected between the outlet of the pretreatment unit 1 and the second inlet channel 34 of the water quality regulating valve 3. The outlet of the emergency valve 9 is connected between the outlet channel 35 of the water quality regulating valve 3 and the faucet 4. The water quality detector 10 is connected between the outlet channel 35 of the water quality regulating valve 3 and the faucet 4.

[0056] Specifically, the flow regulator 36 includes a flow control plate 361 and an adjustment plate 362 stacked thereon.

[0057] The flow control plate 361 is provided with a spiral groove 3611. The inner edge or outer edge of the spiral groove 3611 is set as an adjustment edge 36111. The radius of the adjustment edge 36111 changes so that the width of the spiral groove 3611 gradually increases along its extension trajectory. The inner edge of the spiral groove is set as the adjustment edge, and its inner edge extends inward. The outer edge of the spiral groove is set as the adjustment edge, and its outer edge extends outward.

[0058] The regulating plate 362 is provided with a water inlet hole 3621. The width of the water inlet hole 3621 is less than or equal to the maximum width of the spiral groove 3611. The regulating plate 362 and the flow control plate 361 can rotate relative to each other and are coaxially positioned. The regulating plate and the flow control plate are both sleeved on the same rotating shaft c. The center of the regulating plate and the flow control plate is provided with a shaft hole for the rotating shaft to pass through. During the rotation, the flow passage area a (i.e., the overlapping and communicating area of ​​the water inlet hole and the spiral groove) formed by the water inlet hole 3621 and the spiral groove regulating edge 36111 gradually increases or decreases, realizing stepless adjustment between 0 and the maximum flow rate. The first water inlet channel 33 and the water distribution chamber 32 are connected through the flow passage area a.

[0059] The water quality regulating valve 3 includes a knob cover 30 for controlling the rotation of the regulating plate 362. The valve body 31 has multiple scales 311 on its surface for indicating the flow rate of the first inlet channel. The multiple scales 311 are distributed in a circular interval. The knob cover 30 has an indicator area 301 for indicating the current flow rate scale.

[0060] The flow regulator 36 includes a rotary control 365, which can be integrally set with the regulating plate or achieve circumferential synchronous rotation through the insertion of protrusions and grooves. The knob cover is integrally set with the upper end of the rotary control or achieves circumferential synchronous rotation through the insertion of protrusions and grooves. The rotary control 365 and the regulating plate 362 cooperate to form a water inlet chamber b. The water inlet hole 3621 communicates with the water inlet chamber b. The water inlet chamber b is connected to the water distribution chamber 32 through a water outlet hole b1. The water outlet hole b1 is located on the side wall of the regulating plate 362 or the rotary control 365, and multiple water outlet holes b1 are provided, arranged in an oblique hole shape. Alternatively, the water outlet hole can be located on the upper part of the rotary control, and the water inlet hole can be located on the bottom of the regulating plate. The flow control plate and a water inlet channel are circumferentially positioned through the insertion of protrusions and grooves.

[0061] Specifically, the first water inlet channel 33 is provided with a valve plate 331 and a deformable one-way diaphragm 332 inside. The valve plate is integrally provided on the inner wall of the first water inlet channel. The valve plate 331 has multiple first valve ports 3311 opened in the circumferential direction. The one-way diaphragm 332 is used to block the multiple first valve ports 3311. When water enters the first water inlet channel 33, the fluid pressure squeezes the one-way diaphragm 332 to deform, so as to open the first valve ports 3311. The middle or outer edge of the one-way diaphragm is fixed to the valve plate.

[0062] Specifically, the second water inlet channel 34 is provided with a second valve port 341, a movable valve plug 342, and a reset member 343. The reset member is a spring. The reset member 343 is used to drive the valve plug 342 to block the second valve port 341. When water enters the second water inlet channel 34, the fluid pressure can push the valve plug 342 away to open the second valve port 341.

[0063] Specifically, the water distribution chamber 32 and the water outlet channel 35 are connected through the water guiding cavity 37. Several partitions 371 are protruding on the opposite sides of the water guiding cavity 37, and the partitions 371 on both sides are staggered along the water flow direction of the water guiding cavity 37. The valve body 31 includes a valve seat 312 and a valve cover 313, which are connected by screws or snaps. The valve seat 312 and valve cover 313 cooperate to form the water distribution chamber 32 and the water guiding chamber 37. The adjusting plate 362 and the flow control plate 361 are stacked vertically inside the valve seat 312. The first water inlet channel 33, the second water inlet channel 34, and the water outlet channel 35 are located at the bottom of the valve seat 312. The valve cover 313 has a torsion post 3131 adapted to the knob cover 30 on its surface. The knob cover 30 is sleeved on the torsion post 3131. The upper end face of the torsion post 3131 has the scale. The indicator area 301 can be an indicator window that allows different scales to be exposed. Of course, the indicator area 301 can also have arrows for indicating the scale. The outer periphery of the knob cover can be provided with anti-slip texture.

[0064] The working principle of this utility model:

[0065] When using this water quality conditioning system, users can rotate the knob cover to drive the control knob and the regulating plate to rotate according to actual needs. The regulating plate rotates relative to the flow control plate, so that the flow area formed by the water inlet on the regulating plate and the adjusting edge of the spiral groove on the flow control plate gradually increases or decreases, thereby realizing stepless adjustment of fluid flow rate and precisely controlling the flow rate of purified water entering the water distribution chamber to adjust the mixing ratio of purified water and pure water.

[0066] Afterwards, the mixed water in the water distribution chamber passes through the water guiding chamber and is discharged from the water outlet channel;

[0067] Ultimately, users can obtain precisely adjusted and mixed water through the tap to meet different water usage needs.

[0068] Furthermore, once the mixing ratio of the water quality regulating valve is properly adjusted, the system can present differentiated water quality based on the water flow characteristics of different water usage methods, thereby meeting the different TDS values ​​required for coffee machine pumping or tap water dispensing.

[0069] Furthermore, every component of the system has been carefully designed and made with carefully selected materials to ensure its stability and durability. The introduction of auxiliary components such as pressure reducing valves, water storage tanks, booster pumps, emergency valves, and water quality detectors not only improves the overall performance of the system but also provides users with a more convenient, safe, and reliable water usage experience.

[0070] Meanwhile, users can accurately understand the current fluid flow rate by observing the scale on the upper end of the torsion post aligned with the indicator window on the cap.

[0071] like Figure 15 As shown, when the outer edge of the spiral groove is set as the adjusting edge, when the water inlet rotates, the inner edge of the water inlet is aligned with or offset from the outer edge of the spiral groove, which can completely block the flow.

[0072] It should be noted that in the description of this utility model, all directional indicators (such as up, down, forward, backward, etc.) are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0073] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "installation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A water quality regulation system, characterized in that, include: The pretreatment unit (1) is connected to the basic water source and produces purified water; The RO membrane unit (2) is connected to the outlet of the pretreatment unit (1) and is used to treat purified water to produce pure water. Water quality regulating valve (3) is used to regulate the mixing ratio of purified water and pure water. The water quality regulating valve (3) includes a valve body (31). The valve body (31) is provided with a water distribution chamber (32). The valve body (31) is provided with a first water inlet channel (33), a second water inlet channel (34) and a water outlet channel (35). The first water inlet channel (33) and the second water inlet channel (34) are respectively connected to the water outlet of the pretreatment unit (1) and the RO membrane unit (2). The purified water and pure water are mixed in the water distribution chamber (32) and discharged through the water outlet channel (35). The water quality regulating valve (3) is provided with a flow regulator (36) for regulating the flow rate of the first water inlet channel. The first water inlet channel (33) and the second water inlet channel (34) are both provided with a one-way valve structure. The faucet (4) is connected to the water outlet channel (35) of the water quality regulating valve (3).

2. The water quality regulation system according to claim 1, characterized in that: The flow regulator (36) includes a flow control plate (361) and an adjustment plate (362) stacked thereon. The flow control plate (361) is provided with a spiral groove (3611), and the inner edge or outer edge of the spiral groove (3611) is provided as an adjustment edge (36111). The radius of the adjustment edge (36111) changes so that the width of the spiral groove (3611) gradually increases along its extension trajectory. The regulating plate (362) is provided with a water inlet hole (3621). The width of the water inlet hole (3621) is less than or equal to the maximum width of the spiral groove (3611). The regulating plate (362) and the flow control plate (361) can rotate relative to each other and are positioned coaxially. During the rotation, the flow area (a) formed by the water inlet hole (3621) and the spiral groove regulating edge (36111) gradually increases or decreases, realizing stepless adjustment between 0 and the maximum flow rate. The first water inlet channel (33) and the water distribution chamber (32) are connected through the flow area (a).

3. The water quality regulation system according to claim 2, characterized in that: The water quality regulating valve (3) includes a knob cover (30) for controlling the rotation of the regulating plate (362). The valve body (31) has multiple scales (311) on its surface for indicating the flow rate of the first inlet channel. The multiple scales (311) are distributed in a circular interval. The knob cover (30) has an indicator area (301) for indicating the current flow rate scale.

4. The water quality regulation system according to claim 2, characterized in that: The flow regulator (36) includes a rotary control (365), which cooperates with the regulating plate (362) to form a water inlet chamber (b). The water inlet hole (3621) is connected to the water inlet chamber (b). The water inlet chamber (b) is connected to the water distribution chamber (32) through the water outlet hole (b1). The water outlet hole (b1) is located on the side wall of the regulating plate (362) or the rotary control (365). There are multiple water outlet holes (b1) arranged in an oblique hole shape.

5. The water quality regulation system according to claim 2, characterized in that: The first water inlet channel (33) is provided with a valve plate (331) and a deformable one-way diaphragm (332). The valve plate (331) has multiple first valve ports (3311) in the circumferential direction. The one-way diaphragm (332) is used to block the multiple first valve ports (3311). When water enters the first water inlet channel (33), the fluid pressure squeezes the one-way diaphragm (332) to deform, so as to open the first valve ports (3311).

6. The water quality regulation system according to claim 2, characterized in that: The second water inlet channel (34) is provided with a second valve port (341), a movable valve plug (342) and a reset member (343). The reset member (343) is used to drive the valve plug (342) to block the second valve port (341). When water enters the second water inlet channel (34), the fluid pressure can push the valve plug (342) away to open the second valve port (341).

7. The water quality regulation system according to claim 2, characterized in that: The water distribution chamber (32) and the water outlet channel (35) are connected through the water guide cavity (37). Several partitions (371) are protruding on the opposite sides of the water guide cavity (37), and the partitions (371) on both sides are staggered along the water flow direction of the water guide cavity (37).

8. The water quality regulation system according to claim 2, characterized in that: The valve body (31) includes a valve seat (312) and a valve cover (313). The valve seat (312) and the valve cover (313) cooperate to form the water distribution chamber (32). The regulating plate (362) and the flow control plate (361) are stacked vertically inside the valve seat (312). The first water inlet channel (33), the second water inlet channel (34) and the water outlet channel (35) are located at the bottom of the valve seat (312). The valve cover (313) has a torsion post (3131) adapted to the knob cover (30) on its surface.

9. The water quality conditioning system according to any one of claims 1-8, characterized in that, It also includes a pressure reducing valve (5) and a water storage pressure tank (6). The pressure reducing valve (5) is located upstream of the pretreatment unit (1). The water storage pressure tank (6) is connected between the outlet of the RO membrane unit (2) and the second inlet channel (34) of the water quality regulating valve (3) for storing pure water. The water storage pressure tank (6) is connected to a pressure switch (7). The static outlet pressure of the pressure reducing valve (5) is 0.05-0.1 MPa higher than the pressure of the water storage pressure tank (6).

10. The water quality regulation system according to claim 9, characterized in that, It also includes a booster pump (8), an emergency valve (9) and a water quality detector (10). The booster pump (8) is connected between the outlet of the pretreatment unit (1) and the inlet of the RO membrane unit (2). The inlet of the emergency valve (9) is connected between the outlet of the pretreatment unit (1) and the second inlet channel (34) of the water quality regulating valve (3). The outlet of the emergency valve (9) is connected between the outlet channel (35) of the water quality regulating valve (3) and the faucet (4). The water quality detector (10) is connected between the outlet channel (35) of the water quality regulating valve (3) and the faucet (4).

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