A water purifying device capable of adjusting TDS value

Abstract

The utility model discloses a kind of water purification equipment with adjustable TDS value, it is related to water purification technical field, and the water purification equipment includes water inlet pipeline, PP cotton filter element and sintered carbon CTO filter element, PP cotton filter element and sintered carbon CTO filter element are sequentially connected in the water inlet direction along water inlet pipeline in water inlet pipeline, water inlet pipeline terminal is connected with water pump, the part between water pump and sintered carbon CTO filter element of water inlet pipeline is connected with water inlet solenoid valve, water inlet pipeline is connected with UF filter element, the water outlet end of water pump is connected with RO membrane filter element, the water outlet end of UF filter element and RO membrane filter element both connects pure water pipeline, pure water pipeline is connected with regulating valve, the water inlet end of water inlet pipeline and the water outlet end of pure water pipeline are respectively connected with TDS probe, the shell of water purification equipment is equipped with respectively with water inlet solenoid valve, TDS probe and regulating valve electrically connected control panel, using ultrafiltration, reverse osmosis, TDS value monitoring technology combination, user can independently regulate and control the TDS value of water purification end outlet water, to reach the use requirement of user to pure water.

Description

Technical Field

[0001] This utility model relates to the field of water purification technology, specifically to a water purification device with adjustable TDS value. Background Technology

[0002] TDS (Total Dissolved Solids) in water refers to the total amount of dissolved inorganic and some organic matter in water. This includes dissolved inorganic salt ions, cations, anions, a small amount of dissolved organic matter, and other dissolved substances. As people's requirements for domestic water have increased, they have begun to pay attention to the TDS value of the pure water produced by water purifiers. However, a high or low TDS value does not directly indicate whether the water quality is safe or pure. It is necessary to combine regional level values, national standard limits, or other water quality testing indicators (such as heavy metals, nitrates, bacteria, etc.) to accurately assess the risk.

[0003] The filtration methods used in existing water purification equipment are generally divided into two types: ultrafiltration membrane filtration technology and reverse osmosis membrane filtration technology. The core difference between the two is that ultrafiltration membrane filtration technology does not desalinate or change the TDS value of water, while reverse osmosis membrane filtration can reduce the TDS value of the purified water to near zero. When the two filtration technologies are used as the terminal water purification equipment in a water purification system, the TDS value of the purified water produced will be different.

[0004] When using ultrafiltration membrane filtration equipment as the terminal of a home water purification system, in areas with hard water, the high hardness of the water results in a higher concentration of dissolved inorganic salt ions, cations, anions, small amounts of dissolved organic matter, and other dissolved substances. Ultrafiltration membranes struggle to filter out some dissolved ions (such as calcium and magnesium ions), leading to scale buildup in the purified water. Conversely, when using reverse osmosis membrane filtration equipment as the terminal of a home water purification system, most minerals are removed from the purified water. Therefore, if a user requires mineral-rich purified water, the system cannot meet their needs. Consequently, the application scenarios that these two filtration technologies can accommodate as the terminal of a home water purification system are limited by the specific raw water conditions, and they still have shortcomings in their ability to meet the diverse pure water needs of different users.

[0005] In addition, with the innovation of modern household water purification technology, some household drinking water purification devices that can be used with pre-filters (such as RO / ultrafiltration technology water purifiers) have appeared on the market, such as ion water machines. Essentially, they electrolyze ordinary water into acidic and alkaline parts through electrode plates. However, they only reorganize the ion distribution, causing the pH value of the water to change, while the total dissolved solids (TDS) value of the water remains unchanged. High-hardness water contains relatively more dissolved inorganic salt ions, cations, anions, a small amount of dissolved organic matter, and other dissolved substances. Ion water machines will still form scale after electrolysis. This situation occurs during the water purification process of ion water machines and is related to the pre-filter's ability to control and regulate the TDS value. Utility Model Content

[0006] To address the technical deficiencies in the background technology, this utility model proposes a water purification device with adjustable TDS value, which solves the aforementioned technical problems and meets practical needs. The specific technical solution is as follows: A water purification device with adjustable TDS value includes an inlet pipe, a PP cotton filter element, and a sintered carbon CTO filter element, wherein the PP cotton filter element and the sintered carbon CTO filter element are sequentially connected to the inlet pipe along the water inlet direction, and the device further includes: A water pump, the water inlet end of which is connected to the end of the water inlet pipe, and the portion of the water inlet pipe located between the water pump and the sintered carbon CTO filter element is connected to a water inlet solenoid valve. UF filter element, connected to the branch section of the inlet pipe located between the sintered carbon CTO filter element and the inlet solenoid valve; The RO membrane filter element is connected to the outlet of the water pump via a pipe; A pure water pipe is connected to the outlet of both the UF filter element and the RO membrane filter element. A regulating valve is connected to the branch where the pure water pipe connects to the outlet of the UF filter element. The TDS probe is connected to the inlet end of the water inlet pipe and the outlet end of the pure water pipe, respectively. The control panel is located on the outer casing of the water purification equipment and is electrically connected to the inlet solenoid valve, TDS probe and regulating valve respectively.

[0007] As a further embodiment of this utility model, the control panel includes a circuit board with a processor, a display screen and a knob. The circuit board is fixedly connected to the inner wall of the housing, the display screen is fixedly connected to the surface of the circuit board and extends through the outer side of the housing, and the knob is disposed on the wall of the housing located outside the display screen. The processor is electrically connected to the display screen, the knob, the water inlet solenoid valve, the TDS probe and the regulating valve respectively.

[0008] As a further embodiment of this utility model, the inlet end of the water inlet pipe is connected to a flow detection device and a flow control device for controlling the water flow rate of the water inlet pipe. Both the flow detection device and the flow control device are electrically connected to the processor, and the water flow rate of the water inlet pipe is 1~10L / min.

[0009] As a further embodiment of this utility model, the part of the pure water pipeline connected to the outlet end of the RO membrane filter element is respectively connected to a one-way valve and a pressure tank. The one-way valve and the pressure tank are connected in parallel in the pure water pipeline, and the one-way valve and the regulating valve are connected in parallel in the pure water pipeline.

[0010] As a further embodiment of this utility model, a high-pressure switch is connected to the portion of the pure water pipeline located between the pressure tank and the outlet end of the RO membrane filter element.

[0011] As a further embodiment of this utility model, the inlet end of the RO membrane filter element is connected to a sewage pipe, and the sewage pipe is connected in parallel with the pure water pipe to the inlet end of the RO membrane filter element.

[0012] As a further embodiment of this utility model, the sewage pipe is connected to a sewage solenoid valve, and the sewage solenoid valve is electrically connected to the control panel.

[0013] As a further embodiment of this utility model, a pressure gauge is provided on the outer wall of the outer casing located outside the control panel.

[0014] The beneficial effects of this utility model are as follows: This water purification equipment adopts ultrafiltration membrane filtration technology and reverse osmosis membrane filtration technology to filter the raw water entering the equipment from the inlet pipe. When the pure water is output from the purified water end of the equipment through the pure water pipe, the TDS probe installed in the pure water pipe will detect the TDS value of the pure water and provide feedback on the control panel of the equipment, allowing users to know the specific TDS value of the pure water output from the purified water end. Moreover, users can control the working status of the UF filter and RO membrane filter through the control panel, adjusting the pure water output in the pure water pipe, thereby adjusting the TDS value of the pure water output from the purified water end of the equipment. This allows users to independently regulate the TDS value of the water output from the purified water end, meeting the pure water usage requirements of different users. This water purification equipment has high flexibility of use. It can be used as the terminal of a household water purification system, thereby improving the system's ability to purify water in different regions. It can also be used as a pre-purification device for a household water purification system, further meeting users' needs for pure water produced by the household water purification system. Attached Figure Description

[0015] Figure 1 This is a schematic diagram illustrating the structural principle of the water purification equipment.

[0016] Figure 2 This is a schematic diagram of the structure and principle of the control panel.

[0017] Figure 3 This is a schematic diagram of the control panel portion on the outer layer of the water purification equipment.

[0018] Figure 4 This is a schematic diagram of the control panel inside the water purification equipment.

[0019] In the diagram: 1. Water purification equipment; 11. Control panel; 111. Circuit board; 112. Processor; 113. Display screen; 114. Knob; 12. Flow detection device; 13. Flow control device; 14. Pressure gauge; 2. Inlet pipe; 3. PP cotton filter element; 4. Sintered carbon CTO filter element; 5. Water pump; 51. Inlet solenoid valve; 6. UF filter element; 61. Regulating valve; 7. RO membrane filter element; 71. Check valve; 72. Pressure tank; 73. High-pressure switch; 74. Drain pipe; 741. Drain solenoid valve; 8. Pure water pipe; 9. TDS probe. Detailed Implementation

[0020] The embodiments of this utility model will be described below with reference to the accompanying drawings and related examples: This utility model discloses a water purification device with adjustable TDS value, such as... Figures 1-4 As shown, the water purification device 1 includes an inlet pipe 2, a PP cotton filter element 3, and a sintered carbon CTO filter element 4. The PP cotton filter element 3 and the sintered carbon CTO filter element 4 are sequentially connected to the inlet pipe 2 along the water inlet direction. It also includes: The water pump 5 has its inlet end connected to the end of the water inlet pipe 2. The portion of the water inlet pipe 2 located between the water pump 5 and the sintered carbon CTO filter element 4 is connected to the water inlet solenoid valve 51. UF filter element 6 is connected to the branch section of the water inlet pipe 2 located between the sintered carbon CTO filter element 4 and the water inlet solenoid valve 51. The RO membrane filter element 7 is connected to the outlet end of the water pump 5 via a pipe; The pure water pipe 8 is connected to the outlet of both the UF filter element 6 and the RO membrane filter element 7. A regulating valve 61 is connected to the branch where the pure water pipe 8 connects to the outlet of the UF filter element 6. TDS probe 9 is connected to the inlet end of the water inlet pipe 2 and the outlet end of the pure water pipe 8, respectively; The control panel 11 is located on the outer casing of the water purification device 1 and is electrically connected to the inlet solenoid valve 51, the TDS probe 9 and the regulating valve 61 respectively.

[0021] It should be noted that before using the water purification device 1, the inlet end of the inlet pipe 2 needs to be connected to the raw water input end of the water purification device 1, such as a tap or tap water pipe. The pure water pipe 8 can be connected to the tap at the user's end for direct use, thus realizing the function of the water purification device 1 as the terminal of a household water purification system. During use, the raw water enters from the inlet pipe 2 and is filtered by the PP cotton filter element 3 to pre-treat the incoming tap water, removing large particles of impurities such as mud, rust, colloids, and suspended solids. Then, it passes through the sintered carbon CTO filter element 4, which effectively adsorbs residual chlorine, bacteria, odors, and other substances. The tap water undergoes preliminary filtration and deodorization treatment through the PP cotton filter element 3 and the sintered carbon CTO filter element 4.

[0022] Meanwhile, the TDS probe 9 installed in the pure water pipeline 8 detects the TDS value of the pure water and provides feedback on the control panel 11 of the water purification equipment 1, allowing the user to know the specific TDS value of the pure water output. During use, the user can select the TDS value of the pure water output through the control panel 11 to control the working status of the UF filter cartridge 6 and RO membrane filter cartridge 7 for raw water filtration; specifically: When the user selects that the TDS value of the pure water output from the water purification device 1 is 0, the control panel 11 controls the inlet solenoid valve 51 and the water pump 5 to open, pumping the raw water from the inlet pipe 2 into the RO membrane filter 7 for filtration. At the same time, the control panel 11 controls the regulating valve 61 to close the path of the UF filter 6 to output pure water from the pure water pipe 8, so that the pure water output from the water purification device 1 is pure water treated by the RO membrane filter 7. When the RO membrane is used to describe the type of pollutants removed, it has a removal rate of 95%-99% for inorganic salt ions such as calcium, magnesium (scale), sodium, potassium, lead, arsenic, and fluorine, and a removal rate of >99% for heavy metals such as mercury, cadmium, chromium, and copper. It also dissolves organic matter, so the total amount of all inorganic matter and some organic matter dissolved in the pure water output from the water purification device 1 is close to zero, thus making the pure water with a TDS value of 0 detected at the water purification end. When the user selects a TDS value greater than 0 for the purified water output from the water purifier 1, the control panel 11 will shut off the inlet solenoid valve 51 and the water pump 5. This will redirect all the raw water from the inlet pipe 2 to the branch section of the inlet pipe 2 at the UF filter element 6, where it will be filtered. This ensures that the purified water output from the water purifier 1 is purified water treated by the UF filter element 6. Because the UF filter element 6 removes suspended particles, colloids, bacteria, and large organic molecules from the raw water, it retains dissolved mineral ions (such as calcium and magnesium). Therefore, the TDS value output from the water purifier 1 can be detected. The system can produce pure water with a volume of 0. Simultaneously, based on the actual demand for pure water production during use, the flow rate of the pure water output from the purification end can be selected on the control panel 11. The control panel 11 will select and control the inlet pipe 2 to simultaneously input raw water into the UF filter cartridge 6 and the RO membrane filter cartridge 7 according to the flow rate. Both the UF filter cartridge 6 and the RO membrane filter cartridge 7 simultaneously filter the raw water and output pure water to the pure water pipe 8. The amount of pure water output from the UF filter cartridge 6 to the pure water pipe 8 is then controlled by the regulating valve 61, ensuring that the TDS value of the pure water output from the pure water pipe 8 meets the customer's requirements.

[0023] When the water purification device 1 is used as a pre-filter for a household water purification system, the outlet of the pure water pipe 8 is connected to the inlet of a water purification terminal device similar to an ion water machine in the household water purification system. The water purification device 1 outputs pure water with different TDS values ​​to the water purification terminal device, which then further processes the input pure water before outputting it from the terminal. This allows the characteristics of the pure water output from the household water purification system terminal, such as the types of ions and pH levels, to further meet the user's needs.

[0024] By controlling the pure water output from the purification end of the water purifier 1 in the above manner, not only is the TDS value of the pure water output from the purification end of the water purifier 1 adjustable, but users can also independently adjust the TDS value of the water output from the purification end to meet the user's requirements for pure water. This improves the flexibility of the water purifier 1 and its ability to purify water in different regions.

[0025] It needs to be further explained that, such as Figures 1-4 As shown, the control panel 11 includes a circuit board 111 with a processor 112, a display screen 113, and a knob 114. The circuit board 111 is fixedly connected to the inner wall of the housing. The display screen 113 is fixedly connected to the surface of the circuit board 111 and extends through the outer wall of the housing. The knob 114 is disposed on the wall of the housing located outside the display screen 113. The processor 112 is electrically connected to the display screen 113, the knob 114, the water inlet solenoid valve 51, the TDS probe 9, and the regulating valve 61.

[0026] The TDS values ​​detected by the TDS probes 9 on the inlet water pipe 2 and the pure water pipe 8 are transmitted to the processor 112 and displayed on the display screen 113. When adjusting the TDS value of the pure water output from the purified water end of the water purifier 1, the user can generate a control command by operating the knob 114. After receiving the control command from the user operating the knob 114, the processor 112 will control the display screen 113 to adjust the TDS value of the pure water at the pure water end. The processor 112 will also control the inlet solenoid valve 51 and the regulating valve 61 to ensure that the TDS value of the pure water output from the purified water end meets the specified requirements.

[0027] Specifically, such as Figure 2 As shown, the inlet end of the water inlet pipe 2 is connected to a flow detection device 12 and a flow control device 13 for controlling the water flow rate of the water inlet pipe 2. Both the flow detection device 12 and the flow control device 13 are electrically connected to the processor 112. The water flow rate of the water inlet pipe 2 is 1~10L / min.

[0028] The flow detection device 12 can detect the flow rate of raw water entering from the inlet end of the inlet pipe 2 and feed back the detection data to the processor 112. The flow control device 13 can be a flow control device such as a solenoid valve or a regulating valve 61 to control the water flow rate of the inlet pipe 2 at 1~10L / min, so as to control the amount of pure water output from the purified water end of the water purification equipment 1.

[0029] It needs to be further explained that, such as Figure 1 As shown, the part of the pure water pipeline 8 that is connected to the outlet end of the RO membrane filter element 7 is respectively connected to a one-way valve 71 and a pressure tank 72. The one-way valve 71 and the pressure tank 72 are connected in parallel to the pure water pipeline 8. The one-way valve 71 and the regulating valve 61 are connected in parallel to the pure water pipeline 8.

[0030] When UF filter cartridge 6 performs raw water filtration alone and outputs pure water to pure water pipeline 8, or when UF filter cartridge 6 and RO membrane filter cartridge 7 perform raw water filtration simultaneously and output pure water to pure water pipeline 8, the one-way valve 71 can restrict the direction of pure water output from UF filter cartridge 6 to pure water pipeline 8, while simultaneously ensuring a one-way output of pure water from RO membrane filter cartridge 7 to pure water pipeline 8. This prevents the pure water output from UF filter cartridge 6 or RO membrane filter cartridge 7 to pure water pipeline 8 from flowing back into the pure water pipeline 8 containing RO membrane filter cartridge 7. The pure water filtered by UF filter cartridge 6 and RO membrane filter cartridge 7 can be uniformly output to the outlet of pure water pipe 8; while pressure tank 72 can store the purified water produced by RO membrane filter cartridge 7, avoiding the problem of slow water production speed of water purification equipment 1 causing failure to supply water in time. By storing purified water, the frequent start of water pump 5 is reduced, equipment wear is reduced, and the service life of water purification equipment 1 is extended. When the water in pressure tank 72 is consumed, the air pressure drops and triggers a signal to automatically start water pump 5 to produce water. After the water tank is full, water pump 5 is automatically turned off, realizing intelligent control.

[0031] Specifically, such as Figure 1 As shown, the portion of the pure water pipe 8 located between the pressure tank 72 and the outlet end of the RO membrane filter element 7 is connected to a high-pressure switch 73.

[0032] The high-pressure switch 73 prevents the water pump 5 from running dry. After the water faucet connected to the pure water pipe 8 is closed, and the pure water end of the water purifier 1 reaches the set pressure, the power will be automatically cut off to stop the entire water purifier 1 from operating, thereby protecting the water purifier 1.

[0033] It needs to be further explained that, such as Figure 2 and Figure 3 As shown, the inlet end of the RO membrane filter element 7 is connected to a drain pipe 74, which is connected in parallel with the pure water pipe 8 to the inlet end of the RO membrane filter element 7.

[0034] During the rinsing and water production processes of the RO membrane filter element 7, the sewage pipe 74 can be used to discharge the concentrated water produced by the RO membrane filter element 7 during operation.

[0035] Specifically, such as Figure 1 As shown, the sewage pipe 74 is connected to a sewage solenoid valve 741, and the sewage solenoid valve 741 is electrically connected to the control panel 11.

[0036] The solenoid valve 741 is installed on the drain pipe 74 and connected to the control panel 11, so that the user can control the connection between the RO membrane filter element 7 and the drain pipe 74 through the control panel 11, thereby controlling the discharge of concentrated water.

[0037] It needs to be further explained that, such as Figure 1 As shown, a pressure gauge 14 is provided on the outer wall of the housing located outside the control panel 11.

[0038] The pressure gauge 14 can be connected to a water pressure detection device (not shown in the figure) installed in the water purification equipment 1 to detect the water pressure in the water transmission pipe of the water purification equipment 1 and display it on the water purification equipment 1 so that the user can clearly understand the water pressure status of the water purification equipment 1.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A water purification device with adjustable TDS value, comprising an inlet pipe, a PP cotton filter element, and a sintered carbon CTO filter element, wherein the PP cotton filter element and the sintered carbon CTO filter element are sequentially connected to the inlet pipe along the water inlet direction, characterized in that, Also includes: A water pump, the water inlet end of which is connected to the end of the water inlet pipe, and the portion of the water inlet pipe located between the water pump and the sintered carbon CTO filter element is connected to a water inlet solenoid valve. UF filter element, connected to the branch section of the inlet pipe located between the sintered carbon CTO filter element and the inlet solenoid valve; The RO membrane filter element is connected to the outlet of the water pump via a pipe; A pure water pipe is connected to the outlet of both the UF filter element and the RO membrane filter element. A regulating valve is connected to the branch where the pure water pipe connects to the outlet of the UF filter element. The TDS probe is connected to the inlet end of the water inlet pipe and the outlet end of the pure water pipe, respectively. The control panel is located on the outer casing of the water purification equipment and is electrically connected to the inlet solenoid valve, TDS probe and regulating valve respectively.

2. The water purification equipment according to claim 1, characterized in that, The control panel includes a circuit board with a processor, a display screen, and a knob. The circuit board is fixedly connected to the inner wall of the housing, the display screen is fixedly connected to the surface of the circuit board and extends to the outside of the housing, and the knob is located on the wall of the housing outside the display screen. The processor is electrically connected to the display screen, the knob, the water inlet solenoid valve, the TDS probe, and the regulating valve.

3. The water purification equipment according to claim 2, characterized in that, The inlet end of the water inlet pipe is connected to a flow detection device and a flow control device for controlling the water flow rate of the inlet pipe. Both the flow detection device and the flow control device are electrically connected to the processor. The water flow rate of the inlet pipe is 1~10L / min.

4. The water purification equipment according to claim 1, characterized in that, The portion of the pure water pipeline connected to the outlet of the RO membrane filter is equipped with a one-way valve and a pressure tank, respectively. The one-way valve and the pressure tank are connected in parallel to the pure water pipeline, and the one-way valve and the regulating valve are connected in parallel to the pure water pipeline.

5. The water purification equipment according to claim 4, characterized in that, The section of the pure water pipeline between the pressure tank and the outlet of the RO membrane filter is connected to a high-pressure switch.

6. The water purification equipment according to claim 1, characterized in that, The inlet end of the RO membrane filter element is connected to a drain pipe, which is connected in parallel with the pure water pipe to the inlet end of the RO membrane filter element.

7. The water purification equipment according to claim 6, characterized in that, The sewage pipe is connected to a sewage solenoid valve, which is electrically connected to the control panel.

8. The water purification equipment according to claim 1, characterized in that, A pressure gauge is installed on the outer wall of the housing located outside the control panel.

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