High-efficient direct drinking water purification flushing water-saving device

Abstract

The utility model discloses a kind of high-efficiency direct drinking water purification flushing water-saving devices, including installation box, control mainboard, flushing unit and wastewater regulating unit are equipped in installation box, control mainboard is electrically connected with flushing unit and wastewater regulating unit, flushing unit is used to clean reverse osmosis membrane, wastewater regulating unit is used to control the output proportion of wastewater and pure water, water inlet connected with the pure water outlet of reverse osmosis membrane, flushing port connected with flushing unit, water outlet for discharging pure water connected with flushing unit, and wastewater inlet and wastewater outlet connected with wastewater regulating unit are sequentially provided on installation box, pipeline connection mechanism is provided on water inlet, flushing port, water outlet, wastewater inlet and wastewater outlet, by adjusting the output proportion (such as 1:1 can be adjusted to 1:4 or lower) of wastewater and pure water, reduce the waste of traditional 1:1 ratio discharge, especially suitable for long-term running commercial scene, cumulative water-saving effect is more optimal.

Description

Technical Field

[0001] This utility model relates to the field of direct drinking water technology, specifically to a high-efficiency direct drinking water purification and flushing water-saving device. Background Technology

[0002] Reverse osmosis (RO) technology produces two distinct types of water during water treatment: pure water and wastewater. Pure water is high-quality product water that has been filtered through an RO membrane to remove 95-99% of dissolved salts, organic matter, bacteria, and other impurities. It has extremely low conductivity and can be used in applications with strict water quality requirements, such as the electronics industry, pharmaceuticals, and laboratories. Wastewater, on the other hand, is high-concentration waste liquid retained by the RO membrane, as well as water after cleaning the RO membrane. It contains most of the dissolved solids and pollutants from the original water.

[0003] In existing technologies, reverse osmosis (RO) technology is currently a key core means of direct drinking water purification. However, during actual operation, the surface of the RO membrane is prone to concentration polarization due to the continuous accumulation of salt, which can lead to scaling or organic matter adhesion. This can significantly reduce the membrane flux and increase energy consumption. Although the traditional method of using a fixed wastewater ratio (1:1) can alleviate the above problems to some extent, it brings the disadvantage of high cost. In commercial scenarios, the wastewater rate of traditional RO systems remains high, especially when the raw water quality is stable (such as municipal tap water). A fixed high wastewater ratio will cause a lot of unnecessary waste of resources, which does not meet the requirements of water conservation and environmental protection. Utility Model Content

[0004] The purpose of this utility model is to provide a high-efficiency direct drinking water purification and flushing water-saving device to solve the problems mentioned in the background art, such as the high cost of traditional fixed wastewater ratio (1:1), the high wastewater rate of traditional RO system in commercial scenarios when the raw water quality is stable, which leads to resource waste and does not meet the needs of water conservation and environmental protection.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency direct drinking water purification and flushing water-saving device, comprising an installation box, a control main board, a flushing unit, and a wastewater regulating unit inside the installation box. The control main board is electrically connected to both the flushing unit and the wastewater regulating unit. The flushing unit is used to clean the reverse osmosis membrane, and the wastewater regulating unit is used to control the ratio of wastewater to pure water output. The installation box is sequentially provided with an inlet connected to the pure water outlet of the reverse osmosis membrane, a flushing port connected to the flushing unit, an outlet connected to the flushing unit for discharging pure water, and a wastewater inlet and a wastewater outlet connected to the wastewater regulating unit. Pipe connection mechanisms are provided on the inlet, flushing port, outlet, wastewater inlet, and wastewater outlet.

[0006] Based on the preferred embodiment of this technical solution, the rinsing unit includes a membrane washing solenoid valve installed in the mounting box and a high-pressure switch connected to the membrane washing solenoid valve. One end of the high-pressure switch is provided with a branch pipe 1 for discharging pure water. The membrane washing solenoid valve is provided with a branch pipe 2. The port of the branch pipe 1 is connected to the water outlet, and the port of the branch pipe 2 is connected to the water inlet. The membrane washing solenoid valve is also provided with a branch pipe 3, which is connected to the rinsing port. The rinsing port is connected to an external booster pump.

[0007] Based on the preferred embodiment of this technical solution, the wastewater regulating unit is a wastewater solenoid valve, which is equipped with branch pipe four and branch pipe five. Branch pipe four is connected to the wastewater inlet, and branch pipe five is connected to the wastewater outlet.

[0008] Based on the preferred embodiment of this technical solution, the pipe connection mechanism includes a connection box, a screw threadedly connected to the connection box, a knob fixed to one end of the screw, and a clamping plate rotatably connected to the other end of the screw, wherein the clamping plate is provided with an arc-shaped groove.

[0009] Based on the preferred embodiment of this technical solution, the pipe connection mechanism includes a second connection box, a rotating shaft rotatably connected inside the second connection box, a drive gear fixed to the outer wall of the rotating shaft, an adjusting rod threadedly connected to the second connection box, a second knob fixed to one end of the adjusting rod, and a bidirectional toothed plate rotatably connected to the adjusting rod. The bidirectional toothed plate meshes with the drive gear. The second connection box is also equipped with a guide mechanism, on which a rack is provided. The rack meshes with the drive gear, and a clamping plate is detachably connected to the surface of the rack. An arc-shaped groove is also provided on the clamping plate.

[0010] According to the preferred embodiment of this technical solution, the guiding mechanism includes a slide rail fixedly connected to the connecting box 2, a roller rotatably connected to the slide rail, and a bracket rotatably connected to the roller, wherein the connecting surface of the bracket is fixedly connected to the rack.

[0011] According to the preferred embodiment of this technical solution, the guiding mechanism includes a guide slide rod fixedly connected to the second connecting box, a sliding sleeve slidably connected to the outer wall of the guide slide rod, and a linkage rod fixedly connected to the sliding sleeve, with one end of the linkage rod fixedly connected to the surface of the rack.

[0012] In the preferred embodiment of this technical solution, a magnet is embedded in the contact surface between the rack and the second clamping plate, and the rack and the second clamping plate are magnetically connected.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. By adjusting the output ratio of wastewater to pure water (e.g., 1:1 can be adjusted to 1:4 or lower), the waste of the traditional 1:1 ratio discharge is reduced, which is especially suitable for long-term commercial scenarios and has a better cumulative water-saving effect. 2. The pipe can be quickly installed and disassembled through the threaded self-locking in Embodiment 1 and the gear and rack transmission in Embodiment 2. At the same time, the magnetically connected clamping plate 2 supports quick replacement, and the specification can be changed without tools. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a high-efficiency direct drinking water purification and flushing water-saving device according to the present invention; Figure 2 This is a schematic diagram of one embodiment of the high-efficiency direct drinking water purification and flushing water-saving device of this utility model; Figure 3 This is a schematic diagram of the installation box of this utility model; Figure 4 This is a schematic diagram of the structure of a first embodiment of the pipe connection mechanism of this utility model; Figure 5 This is a schematic diagram of the second embodiment of the pipe connection mechanism of this utility model; Figure 6 This is a schematic diagram of the structure of an embodiment of the guiding mechanism of this utility model; Figure 7 This is a schematic diagram of the second embodiment of the guiding mechanism of this utility model.

[0015] In the diagram: 1. Mounting box; 2. Control main board; 3. Water inlet; 4. Flushing port; 5. Water outlet; 6. Wastewater inlet; 7. Wastewater outlet; 8. Membrane washing solenoid valve; 9. High-pressure switch; 10. Branch pipe one; 11. Branch pipe two; 12. Wastewater solenoid valve; 13. Branch pipe four; 14. Branch pipe five; 15. Connecting box one; 16. Screw; 17. Knob one; 18. Clamping plate one; 19. Connecting box two; 20. Rotating shaft; 21. Drive gear; 22. Adjusting rod; 23. Knob two; 24. Two-way toothed plate; 25. Rack; 26. Clamping plate two; 27. Slide rail; 28. Roller; 29. ​​Bracket; 30. Guide slide rod; 31. Sliding sleeve; 32. Linkage rod. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-7This utility model provides a high-efficiency direct drinking water purification flushing water-saving device, including an installation box 1. The installation box 1 houses a control main board 2, a flushing unit, and a wastewater regulation unit. The control main board 2 is electrically connected to both the flushing unit and the wastewater regulation unit. The flushing unit is used to clean the reverse osmosis membrane, and the wastewater regulation unit is used to control the ratio of wastewater to pure water output. The installation box 1 is sequentially equipped with an inlet 3 connected to the pure water outlet of the reverse osmosis membrane, a flushing outlet 4 connected to the flushing unit, an outlet 5 connected to the flushing unit for discharging pure water, and a wastewater inlet 6 and a wastewater outlet 7 connected to the wastewater regulation unit. Each of the inlet 3, flushing outlet 4, outlet 5, wastewater inlet 6, and wastewater outlet 7 is equipped with a pipe connection mechanism. All interfaces are connected to external equipment (RO membrane, booster pump) through the pipe connection mechanism. The core of wastewater ratio regulation is achieved through dynamic... The discharge of RO membrane concentrate wastewater is controlled to achieve the following objectives: avoid insufficient wastewater discharge leading to concentration polarization on the membrane surface (excessive salt accumulation), causing scaling or fouling; reduce unnecessary wastewater discharge; and improve pure water recovery rate (the ratio of pure water production to total influent). This is typically achieved using a proportional solenoid valve or an on / off solenoid valve. By changing the valve core opening, the flow area from branch pipe 4 (wastewater inlet 6) to branch pipe 5 (wastewater outlet 7) is controlled, thereby adjusting the wastewater flow rate. The wastewater ratio is preset according to the RO membrane design parameters (e.g., 3:1, meaning one part pure water is produced and one part wastewater is discharged). The main board 2 has a built-in timer program that drives the wastewater solenoid valve 12 to open and close at fixed intervals. For example, for every 30L of pure water produced, 10L of wastewater is discharged. This method is suitable for scenarios with stable raw water quality (e.g., municipal tap water) and where water conservation requirements are not high. Please see Figure 2 A further solution based on this embodiment is as follows: The rinsing unit includes a membrane washing solenoid valve 8 installed in the mounting box 1 and a high-pressure switch 9 connected to the membrane washing solenoid valve 8. One end of the high-pressure switch 9 is provided with a branch pipe 10 for discharging pure water. The membrane washing solenoid valve 8 is provided with a branch pipe 11. The port of the branch pipe 10 is connected to the outlet 5, and the port of the branch pipe 11 is connected to the inlet 3. The membrane washing solenoid valve 8 is also provided with a branch pipe 3, which is connected to the rinsing port 4. The rinsing port 4 is connected to an external booster pump. The external booster pump provides high-pressure water through the rinsing port 4, which enters the membrane washing solenoid valve 8 through the branch pipe 3, impacting the contaminants on the RO membrane surface. The wastewater enters the wastewater inlet 6. During operation, the inlet 3 is closed, and the booster pump absorbs pure water under high pressure. The pure water impacts the RO membrane, causing the RO membrane to be immersed in pure water.

[0018] Please see Figure 2A further solution based on this embodiment is as follows: the wastewater regulating unit is a wastewater solenoid valve 12, which is equipped with a branch pipe 4 13 and a branch pipe 5 14. The branch pipe 4 13 is connected to the wastewater inlet 6, and the branch pipe 5 14 is connected to the wastewater outlet 7. By controlling the opening of the wastewater solenoid valve 12, the wastewater discharge volume is changed, thereby adjusting the RO membrane recovery rate (pure water / wastewater ratio). According to the water quality (TDS value) or water consumption requirements, the wastewater and pure water production ratio is adjusted, that is, how much wastewater needs to be produced to produce a certain proportion of pure water, avoiding waste caused by a fixed ratio. During operation, the control main board 2 sets the target wastewater ratio according to the preset program or user input. The wastewater solenoid valve 12 adjusts its opening according to the instruction, the wastewater flow rate of the branch pipe 4 13 changes, and the discharge volume of the branch pipe 5 14 changes synchronously. Example 1: Please refer to Figure 4 A further embodiment of this solution is as follows: the pipe connection mechanism includes a connection box 15, a screw 16 threadedly connected to the connection box 15, a knob 17 fixed to one end of the screw 16, and a clamping plate 18 rotatably connected to the other end of the screw 16. The clamping plate 18 has an arc-shaped groove. Rotating the knob 17 causes the screw 16 to move axially, pushing the clamping plate 18 closer to or away from the opposing fixed surface. The arc-shaped groove conforms to the curved surface of the pipe, achieving a sealed clamping effect. The screw 16 and the connection box 15 are threaded together. Self-locking design eliminates the need for additional locking after clamping, preventing loosening due to vibration. The arc-shaped groove design increases the contact area with the pipe, dispersing pressure and preventing localized stress concentration that could lead to pipe deformation. During operation, place the pipe between the connecting box 15 and the clamping plate 18, and rotate the knob 17 to advance the screw 16. The arc-shaped groove of the clamping plate 18 will fit against the pipe surface. Continue rotating to the set torque. The threaded self-locking maintains the clamping force, ensuring a tight seal. To disassemble, rotate the knob 17 in the opposite direction, the screw 16 will retract, and the clamping plate 18 will detach from the pipe.

[0019] Example 2: Please refer to Figure 5A further embodiment of this solution is as follows: the pipe connection mechanism includes a second connection box 19, a rotating shaft 20 rotatably connected inside the second connection box 19, a drive gear 21 fixed to the outer wall of the rotating shaft 20, an adjusting rod 22 threadedly connected to the second connection box 19, a second knob 23 fixed to one end of the adjusting rod 22, and a bidirectional toothed plate 24 rotatably connected to the adjusting rod 22. The bidirectional toothed plate 24 meshes with the drive gear 21. The second connection box 19 is also provided with a guide mechanism, on which a rack 25 is provided. The rack 25 meshes with the drive gear 21. A second clamping plate 26 is detachably connected to the surface of the rack 25. An arc-shaped groove is also provided on the upper part. Rotating the knob 23 causes the adjusting rod 22 to move axially, and the bidirectional toothed plate 24 moves synchronously. The drive gear 21 rotates due to meshing, driving the rack 25 to move linearly. The rack 25 is connected to the clamping plate 26, forming a symmetrical clamping structure with the fixed surface to ensure that the pipeline is subjected to balanced force. The gear and rack 25 transmission ratio is fixed, and the displacement of the clamping plate 26 can be precisely controlled by rotating the knob 23. During operation, rotating the knob 23 causes the adjusting rod 22 to move the bidirectional toothed plate 24, and the drive gear 21 to rotate. The rotation of the drive gear 21 causes the rack 25 to move axially, and the clamping plate 26 moves closer to or away from the pipeline. Example 3: Please refer to Figure 7 A further solution based on the guide mechanism is as follows: The guide mechanism includes a slide rail 27 fixed in the connecting box 2 19, a roller 28 rollingly connected to the slide rail 27, and a bracket 29 rotatably connected to the roller 28. The connecting surface of the bracket 29 is fixed to the rack 25. The roller 28 rolls on the slide rail 27. The slide rail 27 restricts the rack 25 to move only along the axial direction to ensure smooth movement. If the rack 25 is subjected to lateral force, the constraint force between the slide rail 27 and the roller 28 automatically corrects the position.

[0020] Example 4: Please refer to Figure 6 Another solution based on the guide mechanism is as follows: The guide mechanism includes a guide slide rod 30 fixed in the connecting box 2 19, a slide sleeve 31 slidably connected to the outer wall of the guide slide rod 30, and a linkage rod 32 fixed in the slide sleeve 31. One end of the linkage rod 32 is fixed to the surface of the rack 25. The clearance fit between the slide sleeve 31 and the guide slide rod 30 ensures the linear motion accuracy of the rack 25. The material of the slide sleeve 31 (such as polytetrafluoroethylene) reduces wear and extends service life. The linkage rod 32 transmits the displacement of the slide sleeve 31 to the rack 25 to achieve synchronous movement.

[0021] Please see Figure 5A further solution based on this embodiment is as follows: a magnet is embedded in the contact surface between the rack 25 and the clamping plate 26. The rack 25 and the clamping plate 26 are magnetically connected. The magnetic attraction force makes the clamping plate 26 automatically align with the rack 25, which simplifies the installation process. The clamping plate 26 can be separated by overcoming the magnetic force, which makes it easy to replace the arc groove of different specifications to adapt to different pipe diameters. The magnetic connection provides additional holding force to prevent the clamping plate 26 from falling off in a vibration environment.

[0022] Working principle: The wastewater ratio needs to be preset according to the RO membrane design parameters, for example, set to 3:1, that is, one part pure water is produced and one-third of the wastewater is discharged. At the same time, the built-in timer program of the main board 2 is set to drive the wastewater solenoid valve 12 to open and close by setting a fixed cycle such as discharging 10L of wastewater for every 30L of pure water produced. In the pure water production process, pure water enters from the inlet 3. At this time, the wastewater solenoid valve 12 of the wastewater regulating unit starts to work. According to the instructions of the control main board 2, the valve core opening is changed, and the flow area from the branch pipe 4 13 (wastewater inlet 6) to the branch pipe 5 14 (wastewater outlet 7) is controlled. The wastewater discharge is adjusted according to the preset wastewater ratio to avoid insufficient wastewater discharge, which may cause concentration polarization on the membrane surface and lead to scaling or pollution. Unnecessary wastewater discharge is reduced to improve the pure water recovery rate.

[0023] When the preset flushing cycle of the control board 2 is reached or other flushing trigger conditions are met, the RO membrane flushing process is started. The external booster pump is connected to the membrane washing solenoid valve 8 of the flushing unit through the flushing port 4 and provides high-pressure water. The high-pressure water enters the membrane washing solenoid valve 8 through the branch pipe 3. After the membrane washing solenoid valve 8 is opened, the high-pressure water impacts the contaminants on the surface of the RO membrane. At the same time, the inlet 3 is closed, and the booster pump absorbs pure water under high pressure to impact the RO membrane and immerse it in pure water. The wastewater generated during flushing enters the wastewater inlet 6 and is discharged from the wastewater outlet 7 after being regulated by the wastewater solenoid valve 12. In Example 1, during installation, the pipe to be connected is first placed between the connecting box 15 and the clamping plate 18. Rotating the knob 17 causes the screw 16 to move axially, pushing the arc-shaped groove of the clamping plate 18 to fit the curved surface of the pipe. Continue rotating to the set torque, and the self-locking property of the screw 16 and the connecting box 15's threaded engagement clamps the pipe. The arc-shaped groove increases the contact area, disperses pressure, prevents pipe deformation, and ensures a tight seal. During disassembly, rotating the knob 17 in the opposite direction causes the screw 16 to retract, allowing the clamping plate 18 to detach from the pipe. In Embodiment 2, during installation, rotating knob 23 causes adjusting rod 22 to move bidirectional toothed plate 24, which in turn drives drive gear 21 to rotate. This, in turn, causes rack 25 to move axially. Clamping plate 26 connected to rack 25 moves closer to the pipe, forming a symmetrical clamping structure with the fixed surface. The displacement of clamping plate 26 is precisely controlled by rotating knob 23. During disassembly, rotating knob 23 in the opposite direction causes related components to move in the opposite direction, moving clamping plate 26 away from the pipe. Example 3 is based on Example 2. During clamping or disassembly, the roller 28 rolls on the slide rail 27. The slide rail 27 restricts the rack 25 to move only in the axial direction. If the rack 25 is subjected to lateral force, the constraint force between the slide rail 27 and the roller 28 automatically corrects the position to ensure smooth movement. Example 4 is also based on Example 2. When clamping or disassembling, the sliding sleeve 31 slides on the outer wall of the guide slide rod 30. The clearance fit between the sliding sleeve 31 and the guide slide rod 30 ensures the linear motion accuracy of the rack 25. The material of the sliding sleeve 31 (such as polytetrafluoroethylene) reduces wear and extends service life. The linkage rod 32 transmits the displacement of the sliding sleeve 31 to the rack 25 to achieve synchronous movement. In Embodiment 2, the rack 25 and the clamping plate 26 are magnetically connected. During installation, the clamping plate 26 with magnets is brought close to the rack 25, and the magnetic attraction force makes it automatically aligned, simplifying the installation process. If it is necessary to replace the clamping plate 26 with different specifications of arc grooves to adapt to different pipe diameters, it can be separated by overcoming the magnetic force. The additional holding force provided by the magnetic connection can prevent the clamping plate 26 from falling off in a vibration environment.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency direct drinking water purification and flushing water-saving device, characterized in that: The device includes an installation box (1), which contains a control main board (2), a flushing unit, and a wastewater regulating unit. The control main board (2) is electrically connected to both the flushing unit and the wastewater regulating unit. The flushing unit is used to clean the reverse osmosis membrane, and the wastewater regulating unit is used to control the ratio of wastewater to pure water output. The installation box (1) is provided with an inlet (3) connected to the pure water outlet of the reverse osmosis membrane, a flushing port (4) connected to the flushing unit, an outlet (5) connected to the flushing unit for discharging pure water, and a wastewater inlet (6) and a wastewater outlet (7) connected to the wastewater regulating unit. Pipe connection mechanisms are provided on the inlet (3), flushing port (4), outlet (5), wastewater inlet (6), and wastewater outlet (7).

2. The high efficiency direct drinking water purifying flushing water saving device according to claim 1, characterized in that: The rinsing unit includes a membrane washing solenoid valve (8) installed in the mounting box (1) and a high-pressure switch (9) connected to the membrane washing solenoid valve (8). One end of the high-pressure switch (9) is provided with a branch pipe (10) for discharging pure water. The membrane washing solenoid valve (8) is provided with a branch pipe (11). The port of the branch pipe (10) is connected to the water outlet (5), and the port of the branch pipe (11) is connected to the water inlet (3). The membrane washing solenoid valve (8) is also provided with a branch pipe (3), which is connected to the rinsing port (4). The rinsing port (4) is connected to an external booster pump.

3. The high efficiency direct drinking water purifying flushing water saving device according to claim 1, characterized in that: The wastewater regulating unit is a wastewater solenoid valve (12). The wastewater solenoid valve (12) is equipped with a branch pipe four (13) and a branch pipe five (14). The branch pipe four (13) is connected to the wastewater inlet (6), and the branch pipe five (14) is connected to the wastewater outlet (7).

4. The high efficiency direct drinking water purifying flushing water saving device according to claim 1, characterized in that: The pipe connection mechanism includes a connection box (15), a screw (16) threaded onto the connection box (15), a knob (17) fixed to one end of the screw (16), and a clamping plate (18) rotatably connected to the other end of the screw (16). An arc-shaped groove is provided on the clamping plate (18).

5. The high efficiency direct drinking water purifying flushing water saving device according to claim 1, characterized in that: The pipe connection mechanism includes a second connection box (19), a rotating shaft (20) rotatably connected inside the second connection box (19), a drive gear (21) fixed to the outer wall of the rotating shaft (20), an adjusting rod (22) threadedly connected to the second connection box (19), a knob (23) fixed to one end of the adjusting rod (22), and a two-way toothed plate (24) rotatably connected to the adjusting rod (22). The two-way toothed plate (24) meshes with the drive gear (21). The second connection box (19) is also provided with a guide mechanism. The guide mechanism is provided with a rack (25). The rack (25) meshes with the drive gear (21). The surface of the rack (25) is detachably connected to a clamping plate (26). The clamping plate (26) is also provided with an arc-shaped groove.

6. The high efficiency direct drinking water purifying flushing water saving device according to claim 5, characterized in that: The guiding mechanism includes a slide rail (27) fixed in the connecting box (19), a roller (28) rollingly connected to the slide rail (27), and a bracket (29) rotatably connected to the roller (28). The connecting surface of the bracket (29) is fixedly connected to the rack (25).

7. The high efficiency direct drinking water purifying flushing water saving device according to claim 5, characterized in that: The guiding mechanism includes a guide slide rod (30) fixed in the connecting box 2 (19), a sliding sleeve (31) slidably connected to the outer wall of the guide slide rod (30), and a linkage rod (32) fixed on the sliding sleeve (31). One end of the linkage rod (32) is fixedly connected to the surface of the rack (25).

8. The high efficiency direct drinking water purifying flushing water saving device according to claim 5, characterized in that: A magnet is embedded in the contact surface between the rack (25) and the clamping plate (26), and the rack (25) and the clamping plate (26) are magnetically connected.

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