Household water purifying device

Abstract

The invention belongs to the technical field of household water purification equipment, and particularly discloses a household water purification device which comprises a water purifier outer box and a water tank, the water tank is installed on the inner side of the water purifier outer box, a control pipeline assembly is arranged on one side of the water purifier outer box, the bottom of the water tank is connected with a faucet discharge pipeline, and the faucet discharge pipeline is connected with a water outlet of the water purifier outer box. An ultrafiltration membrane assembly is arranged on the inner side of the water tank, the top of the ultrafiltration membrane assembly is connected with an adjusting assembly, when the ultrafiltration membrane assembly is blocked and forward washing is hindered, the control pipeline assembly continues to flush water and pushes the ultrafiltration membrane assembly to move upwards, and the adjusting assembly limits the ultrafiltration membrane assembly when the ultrafiltration membrane assembly moves upwards. A trigger is arranged on the inner side of the water purifier outer box and located at the bottom of the faucet discharge pipeline, and backwashing is triggered when the ultrafiltration membrane assembly moves upwards to make contact with the trigger.

Description

Technical Field

[0001] The present invention relates to the technical field of household water purification equipment, and more specifically to a household water purification device. Background Art

[0002] As water pollution becomes more and more serious, the safety of drinking water for urban residents has become a prominent issue. In order to filter out harmful substances in water, water purifiers are used more and more widely. Existing water purifiers are generally equipped with hollow fiber ultrafiltration membranes to purify water. As a high-precision filtration material, hollow fiber ultrafiltration membranes only allow water, beneficial minerals and trace elements to pass through to form purified water. Bacteria, rust, colloids, silt, suspended matter and large molecular organic matter are retained in the hollow fiber ultrafiltration membrane and discharged during flushing.

[0003] At present, source water is used as flushing water for forward flushing when flushing hollow fiber ultrafiltration membranes. The ultrafiltration membrane is easy to be blocked and the flushing effect cannot be guaranteed. In addition, during the use of existing ultrafiltration membranes, the status of the ultrafiltration membrane cannot be monitored in real time. When the ultrafiltration membrane is blocked during filtration, it cannot be cleaned at the first time, and can only be cleaned at regular intervals, which is inconvenient for users. Summary of the invention

[0004] In order to overcome the above defects of the prior art, the present invention provides a household water purification device to solve the problems existing in the above background technology.

[0005] The present invention provides the following technical solution: a household water purification device, comprising a water purifier outer box and a water tank, the water tank being installed on the inner side of the water purifier outer box, a control pipe assembly being arranged on one side of the water purifier outer box, a faucet discharge pipe being connected to the bottom of the water tank, an ultrafiltration membrane assembly being arranged on the inner side of the water tank, an adjusting assembly being connected to the top of the ultrafiltration membrane assembly, when the ultrafiltration membrane assembly is clogged and the positive flushing is hindered, the control pipe assembly will push the ultrafiltration membrane assembly upward when the flushing is continued, and the adjusting assembly will limit the ultrafiltration membrane assembly when it moves upward, a trigger being arranged on the inner side of the water purifier outer box at the bottom of the faucet discharge pipe, and backwashing is triggered when the ultrafiltration membrane assembly moves up and contacts the trigger.

[0006] When the membrane body is blocked and the forward flushing is hindered, the control pipeline assembly continues to let water in, which will push the ultrafiltration membrane assembly upward. During this process, the water permeability and filtration efficiency of the membrane body continue to decrease until the trigger block contacts the trigger to trigger backwashing. The membrane body is backwashed to restore the water permeability of the membrane body. The backwash triggering timing is managed according to actual usage conditions to improve water purification efficiency and optimize the overall user experience of the water purification device.

[0007] Furthermore, the adjustment component includes an adjusting inner rod and a limiting outer tube, the bottom of the adjusting inner rod is fixedly connected to the limiting block, the limiting outer tube is a hollow structure, the inner diameter of the limiting outer tube is clearance-matched with the outer diameter of the limiting block, the adjusting inner rod is movably inserted into the inner side of the limiting outer tube, an exhaust port is provided at the top of the limiting outer tube, and the outer side of the limiting outer tube is fixedly connected to the outer box of the water purifier.

[0008] During the upward movement of the ultrafiltration membrane assembly, the regulating inner rod will be pushed upward, and air pressure changes will occur during the upward movement of the regulating inner rod. The exhaust port can discharge excess gas when the limit block squeezes the air inside the limit outer tube, ensuring less resistance during the upward movement.

[0009] Furthermore, the ultrafiltration membrane assembly includes a membrane body, the outer side of the membrane body is fixedly sleeved with an outer mounting frame, the top of one side of the outer mounting frame is fixedly connected with a trigger block, the outer size of the membrane body is gap-matched with the inner size of the water purifier outer box, and the bottom of the adjusting inner rod is fixedly connected to the top of the outer mounting frame.

[0010] The inner rod is adjusted and fixed around the top of the outer installation frame, and the four corners are limited to each other, which can drive the outer installation frame to rise evenly.

[0011] Furthermore, the control pipe assembly includes a tee pipe, one side of the tee pipe is fixedly connected to a water inlet pipe for water intake, the other side of the tee pipe is fixedly connected to a forward flushing pipe, one side of the water purifier outer box is provided with a mounting hole that matches the tolerance of the forward flushing pipe, the top of the tee pipe is fixedly connected to a backwashing pipe, and the top of the water purifier outer box is provided with a mounting hole that matches the tolerance of the backwashing pipe.

[0012] Cooperate with the trigger to control the direction of water flow. The forward flushing pipe is opened for forward flushing state, and the back flushing pipe is opened for back flushing state. Furthermore, the ultrafiltration membrane assembly is obliquely clamped in the middle of the inner side of the water tank, the positive flushing pipe is located at the bottom of one side of the ultrafiltration membrane assembly, and the faucet discharge pipe is located at the top of the other side of the ultrafiltration membrane assembly.

[0013] When the membrane body in the ultrafiltration membrane assembly is blocked, the ultrafiltration membrane assembly as a whole is subjected to water pressure and is limited on both sides, and the inclined state can ensure that the ultrafiltration membrane assembly is pushed normally.

[0014] Furthermore, the trigger block and the trigger are on the same vertical line, a second solenoid valve is fixedly installed on the outside of the backwash pipe, a first solenoid valve is fixedly installed on the outside of the forward wash pipe, and the trigger is electrically connected to the second solenoid valve of the backwash pipe and the first solenoid valve of the forward wash pipe.

[0015] The trigger changes the direction of water flow by controlling the second solenoid valve of the backwash pipe and the first solenoid valve of the forward wash pipe.

[0016] Furthermore, the adjusting assembly also includes a connecting pipe, both sides of the connecting pipe are fixedly connected with exhaust pipes, the bottom of the exhaust pipe is fixedly connected to the top of the exhaust port, an exhaust hole is opened at the top in the middle of the connecting pipe, and the top of the water purifier outer box is connected with a dustproof net cylinder by bolts, and the dustproof net cylinder is a hollow structure and is sleeved on the middle part of the outer side of the connecting pipe.

[0017] The dustproof mesh cylinder prevents dust from entering the exhaust process of the regulating component.

[0018] Furthermore, a wastewater discharge pipe is fixedly connected to the bottom of the water tank, and the wastewater discharge pipe is in an inverted trapezoid. A connecting hole matching the inner diameter tolerance of the wastewater discharge pipe is provided at the bottom of the water purifier outer box, and the connecting hole of the water purifier outer box is used to install a water pipe to connect with the wastewater discharge pipe.

[0019] Prevent impurities from being retained at the bottom of the water tank and further improve the efficiency of backwashing to remove impurities.

[0020] Technical effects and advantages of the present invention: 1. The present invention is provided with an adjustment component, a trigger and an ultrafiltration membrane component that cooperate with each other. When the membrane body is blocked and the positive flushing is hindered, the control pipeline component continues to pass water to push the ultrafiltration membrane component upward, and then pushes the adjustment inner rod upward. The adjustment inner rod is arranged at the four corners of the top of the outer installation frame and the adjustment inner rod is limited by the limit outer tube. The ultrafiltration membrane component moves horizontally and rises evenly under the action of the adjustment component to ensure that the water is filtered normally during the rising process. However, the water permeability and filtration efficiency of the membrane body continue to decrease during this process until the trigger block contacts the trigger to trigger backwashing, and the membrane body is backwashed to restore the water permeability of the membrane body. The backwashing triggering timing is managed according to the actual use situation, the water purification efficiency is improved, and the overall use experience of the water purification device is optimized.

[0021] 2. The present invention is provided with a dustproof net cylinder, which prevents dust from exhausting the adjustment component. The exhaust gas is guided from the exhaust port to the exhaust hole through the exhaust pipe and the connecting pipe. Small holes are arranged on the outside of the dustproof net cylinder to allow air to enter and exit but to block dust from flowing through the exhaust hole, thereby preventing dust from entering the exhaust port during repeated upward exhaust and downward reset processes, causing dust contamination in the water received by the user from the faucet discharge pipe, thereby further improving the cleanliness of the water quality.

[0022] 3. The present invention provides a wastewater discharge pipe which is in an inverted trapezoidal shape and a water pipe is installed in the connection hole of the water purifier outer box to communicate with the wastewater discharge pipe, so as to facilitate the discharge of impurities blocked by the membrane body, avoid impurities being retained at the bottom of the water tank, and further improve the efficiency of backwashing to discharge impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic cross-sectional view of the overall structure of the present invention.

[0024] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention.

[0025] Figure 3 The present invention Figure 2 A schematic diagram of the enlarged structure in the middle.

[0026] Figure 4 It is a schematic diagram of the overall structure of the present invention triggering backwashing state.

[0027] Figure 5 The present invention Figure 4 Enlarged schematic diagram of the structure at point B in the middle.

[0028] Figure 6 The present invention Figure 4 Enlarged schematic diagram of the structure at point C in the middle.

[0029] Description of reference numerals: 1. Water purifier outer box; 2. Water tank; 3. Control pipe assembly; 301. Tee pipe; 302. Water inlet pipe; 303. Forward flushing pipe; 304. Backwashing pipe; 4. Wastewater discharge pipe; 5. Dust-proof net cylinder; 6. Adjustment assembly; 601. Adjustment inner rod; 602. Limit block; 603. Limit outer pipe; 604. Exhaust port; 605. Exhaust pipe; 606. Connecting pipe; 607. Exhaust hole; 7. Trigger; 8. Faucet discharge pipe; 9. Ultrafiltration membrane assembly; 901. External mounting frame; 902. Membrane body; 903. Trigger block. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative, and the household water purification device with backwashing function involved in the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0031] Reference Figures 1 to 6The present invention provides a household water purification device, including a water purifier outer box 1 and a water tank 2, the water tank 2 is installed on the inner side of the water purifier outer box 1, a control pipe assembly 3 is arranged on one side of the water purifier outer box 1, a faucet discharge pipe 8 is connected to the bottom of the water tank 2, an ultrafiltration membrane assembly 9 is arranged on the inner side of the water tank 2, and an adjustment assembly 6 is connected to the top of the ultrafiltration membrane assembly 9. When the ultrafiltration membrane assembly 9 is blocked and the positive flushing is blocked, the control pipe assembly 3 continues to flush and pushes the ultrafiltration membrane assembly 9 to move upward, and the adjustment assembly 6 limits the ultrafiltration membrane assembly 9 when it moves upward, and a trigger 7 is arranged on the inner side of the water purifier outer box 1 at the bottom of the faucet discharge pipe 8, and backwashing is triggered when the ultrafiltration membrane assembly 9 moves up to contact with the trigger 7.

[0032] In a preferred embodiment, the adjustment component 6 includes an adjustment inner rod 601 and a limiting outer tube 603, the bottom of the adjustment inner rod 601 is fixedly connected to the limiting block 602, the limiting outer tube 603 is a hollow structure, the inner diameter of the limiting outer tube 603 is clearance-matched with the outer diameter of the limiting block 602, the adjustment inner rod 601 is movably arranged on the inner side of the limiting outer tube 603, the top of the limiting outer tube 603 is provided with an exhaust port 604, and the outer side of the limiting outer tube 603 is fixedly connected to the outer box 1 of the water purifier; Specifically, when the ultrafiltration membrane assembly 9 is clogged and the positive flushing is obstructed, the control pipeline assembly 3 continues to flush water, which will push the ultrafiltration membrane assembly 9 to move upward. During the upward movement of the ultrafiltration membrane assembly 9, the regulating inner rod 601 will be pushed to rise. During the upward movement of the regulating inner rod 601, air pressure changes will occur. The exhaust port 604 can discharge excess gas when the limit block 602 squeezes the air inside the limit outer tube 603, ensuring that the resistance during the upward movement is smaller.

[0033] In a preferred embodiment, the ultrafiltration membrane assembly 9 includes a membrane body 902, an outer mounting frame 901 is fixedly sleeved on the outer side of the membrane body 902, a trigger block 903 is fixedly connected to the top of one side of the outer mounting frame 901, the outer size of the membrane body 902 is gap-matched with the inner size of the water purifier outer box 1, and the bottom of the inner rod 601 is adjusted to be fixedly connected to the top of the outer mounting frame 901; Specifically, when the membrane body 902 is blocked, the water permeability of the membrane body 902 is reduced. When the water source output remains unchanged, the water pressure at the bottom of the membrane body 902 will gradually increase, thereby pushing the membrane body 902 to rise and the gap between the outer side of the outer mounting frame 901 and the inner side of the water tank 2 is matched. Therefore, the force generated by the gradually increasing water pressure will push the ultrafiltration membrane assembly 9 upward as a whole. Since the adjustable inner rod 601 is fixed on all four sides of the top of the outer mounting frame 901 and the four corners are limited to each other, the outer mounting frame 901 can be driven to rise evenly.

[0034] In a preferred embodiment, the control pipe assembly 3 includes a tee pipe 301, one side of the tee pipe 301 is fixedly connected to a water inlet pipe 302 for water inlet, the other side of the tee pipe 301 is fixedly connected to a positive flushing pipe 303, one side of the water purifier outer box 1 is provided with a mounting hole that matches the tolerance of the positive flushing pipe 303, the top of the tee pipe 301 is fixedly connected to a backwashing pipe 304, and the top of the water purifier outer box 1 is provided with a mounting hole that matches the tolerance of the backwashing pipe 304; Specifically, the first solenoid valve of the forward flushing pipe 303 and the second solenoid valve of the back flushing pipe 304 are initially in the closed state. When the user turns on the faucet switch, the first solenoid valve of the forward flushing pipe 303 is activated, which is the forward flushing state. At this time, the user uses water normally, and the water flows from the water inlet pipe 302 into the forward flushing pipe 303 via the three-way pipe 301, and then into the water tank 2, is filtered through the membrane body 902, enters the faucet discharge pipe 8, and then flows out to the faucet outlet.

[0035] In a preferred embodiment, the ultrafiltration membrane assembly 9 is obliquely clamped in the middle of the inner side of the water tank 2, the positive flushing pipe 303 is located at the bottom of one side of the ultrafiltration membrane assembly 9, and the faucet discharge pipe 8 is located at the top of the other side of the ultrafiltration membrane assembly 9.

[0036] In a preferred embodiment, the trigger block 903 and the trigger 7 are on the same vertical line, a second solenoid valve is fixedly installed on the outer side of the backwash pipe 304, a first solenoid valve is fixedly installed on the outer side of the forward flush pipe 303, and the trigger 7 is electrically connected to the second solenoid valve of the backwash pipe 304 and the first solenoid valve of the forward flush pipe 303; Specifically, the first solenoid valve of the positive flushing pipe 303 and the second solenoid valve of the backwashing pipe 304 are mainly controlled by the user and the trigger 7. When the user turns on the faucet switch, the first solenoid valve of the positive flushing pipe 303 is activated, which is the positive flushing state. At this time, the user normally uses water. When the ultrafiltration membrane assembly 9 moves up to the trigger block 903 and contacts the trigger 7 and squeezes the trigger 7 appropriately, the trigger 7 can be triggered. The faucet discharge pipe 8 and the wastewater discharge pipe 4 are both fixedly installed with solenoid valves, and are both controlled by the trigger 7. In the initial state, the faucet discharge pipe 8 is opened and the wastewater discharge pipe 4 is closed. At this time, after the trigger 7 is triggered, the second solenoid valve of the backwashing pipe 304 is controlled to open, the solenoid valve of the wastewater discharge pipe 4 is opened, the first solenoid valve of the positive flushing pipe 303 is closed, and the solenoid valve of the faucet discharge pipe 8 is closed. Water is flushed from the backwashing pipe 304 to the top of the ultrafiltration membrane assembly 9, and impurities blocking the membrane body 902 are flushed downward, and the wastewater carrying impurities is discharged from the wastewater discharge pipe 4, and water will not be discharged from the faucet discharge pipe 8. At this time, it is in the backwashing state.

[0037] In a preferred embodiment, the regulating assembly 6 further includes a connecting pipe 606, both sides of the connecting pipe 606 are fixedly connected with an exhaust pipe 605, the bottom of the exhaust pipe 605 is fixedly connected to the top of the exhaust port 604, an exhaust hole 607 is opened at the top of the middle part of the connecting pipe 606, and a dustproof net cylinder 5 is connected to the top of the water purifier outer box 1 by bolts, and the dustproof net cylinder 5 is a hollow structure and is sleeved on the middle part of the outer side of the connecting pipe 606; Specifically, the dust-proof mesh tube 5 prevents dust from entering the exhaust process of the adjustment component 6, and guides the exhaust gas from the exhaust port 604 to the exhaust hole 607 for discharge through the exhaust pipe 605 and the connecting pipe 606. The outside of the dust-proof mesh tube 5 is provided with small holes for air to enter and exit but to block the dust from flowing through the exhaust hole 607, thereby preventing dust from entering the exhaust port 604 during the repeated upward movement for exhaust and downward movement for reset, which would cause dust contamination in the water received by the user from the faucet discharge pipe 8, thereby further improving the cleanliness of the water quality.

[0038] In a preferred embodiment, a wastewater discharge pipe 4 is fixedly connected to the bottom of the water tank 2, and the wastewater discharge pipe 4 is in an inverted trapezoidal shape. A connecting hole matching the inner diameter tolerance of the wastewater discharge pipe 4 is opened at the bottom of the water purifier outer box 1, and the connecting hole of the water purifier outer box 1 is used to install a water pipe to communicate with the wastewater discharge pipe 4; Specifically, the wastewater discharge pipe 4 is in an inverted trapezoidal shape and a water pipe is installed in the connecting hole of the water purifier outer box 1 to communicate with the wastewater discharge pipe 4, so as to facilitate the discharge of impurities blocked by the membrane body 902, avoid impurities from being retained at the bottom of the water tank 2, and further improve the efficiency of backwashing to discharge impurities.

[0039] Working principle of the present invention: When the user turns on the faucet switch, the first solenoid valve of the positive flushing pipe 303 is activated, which is the positive flushing state. At this time, the user uses water normally, and the water flows from the water inlet pipe 302 into the positive flushing pipe 303 through the three-way pipe 301, and then into the water tank 2, and is filtered through the membrane body 902 into the faucet discharge pipe 8 and then flows out to the faucet outlet; When the membrane body 902 is blocked, the water permeability of the membrane body 902 is reduced. Under the condition that the water source output remains unchanged, the water pressure at the bottom of the membrane body 902 will gradually increase, thereby pushing the membrane body 902 up and the clearance between the outer side of the outer mounting frame 901 and the inner side of the water tank 2 is matched. Therefore, the force generated by the gradually increasing water pressure will push the ultrafiltration membrane assembly 9 upward as a whole. Since the adjusting inner rod 601 is fixed around the top of the outer mounting frame 901 and the four corners are limited to each other, the outer mounting frame 901 can be driven to rise evenly, and the adjusting inner rod 601 is adjusted during the rising process. Air pressure changes will occur, and the exhaust port 604 can exhaust excess gas when the limit block 602 squeezes the air inside the limit outer tube 603, ensuring that the upward movement process is more sensitive. The dust-proof net tube 5 prevents dust from the exhaust process of the adjustment component 6, and guides the exhaust gas from the exhaust port 604 to the exhaust hole 607 for discharge through the exhaust pipe 605 and the connecting pipe 606. The outside of the dust-proof net tube 5 is provided with small holes for air to enter and exit but to block the dust from flowing through the exhaust hole 607, avoiding dust from entering the exhaust port 604 during repeated upward exhaust and downward reset processes; When the ultrafiltration membrane assembly 9 moves up to the trigger block 903 and contacts the trigger 7 and squeezes the trigger 7 appropriately, the trigger 7 is triggered at this time, and the second solenoid valve of the backwash pipe 304 is controlled to open, the solenoid valve of the wastewater discharge pipe 4 is opened, the first solenoid valve of the forward flushing pipe 303 is closed, and the solenoid valve of the faucet discharge pipe 8 is closed, and water is flushed from the backwash pipe 304 to the top of the ultrafiltration membrane assembly 9, and the impurities blocking the membrane body 902 are flushed downward, and the wastewater carrying impurities is discharged from the wastewater discharge pipe 4, and the water will not be discharged from the faucet discharge pipe 8. At this time, it is in the backwash state, wherein the wastewater discharge pipe 4 is an inverted trapezoid and a water pipe is installed in the connecting hole of the water purifier outer box 1 to communicate with the wastewater discharge pipe 4, so as to facilitate the discharge of impurities blocked by the membrane body 902 and avoid impurities being retained at the bottom of the water tank 2. The second solenoid valve of the backwash pipe 304 is closed when the ultrafiltration membrane assembly 9 is reset. The user can choose to start the first solenoid valve of the forward flushing pipe 303 again according to needs to receive clean water.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A household water purification device, comprising a water purifier outer box (1) and a water tank (2), wherein the water tank (2) is installed inside the water purifier outer box (1), characterized in that: A control pipe assembly (3) is arranged on one side of the water purifier outer box (1), a faucet discharge pipe (8) is connected to the bottom of the water tank (2), an ultrafiltration membrane assembly (9) is arranged on the inner side of the water tank (2), and an adjustment assembly (6) is connected to the top of the ultrafiltration membrane assembly (9). When the ultrafiltration membrane assembly (9) is blocked and the forward flushing is blocked, the control pipe assembly (3) continues to flush and pushes the ultrafiltration membrane assembly (9) to move upward. The adjustment assembly (6) limits the position of the ultrafiltration membrane assembly (9) when it moves upward. A trigger (7) is arranged on the inner side of the water purifier outer box (1) at the bottom of the faucet discharge pipe (8). When the ultrafiltration membrane assembly (9) moves upward to contact with the trigger (7), backwashing is triggered.

2. A household water purification device according to claim 1, characterized in that: The adjustment component (6) comprises an adjustment inner rod (601) and a limiting outer tube (603); the bottom of the adjustment inner rod (601) is fixedly connected to the limiting block (602); the limiting outer tube (603) is a hollow structure; the inner diameter of the limiting outer tube (603) is clearance-matched with the outer diameter of the limiting block (602); the adjustment inner rod (601) is movably inserted into the inner side of the limiting outer tube (603); an exhaust port (604) is provided at the top of the limiting outer tube (603); and the outer side of the limiting outer tube (603) is fixedly connected to the outer box (1) of the water purifier.

3. A household water purification device according to claim 2, characterized in that: The ultrafiltration membrane assembly (9) comprises a membrane body (902), the outer side of the membrane body (902) is fixedly sleeved with an outer mounting frame (901), the top of one side of the outer mounting frame (901) is fixedly connected with a trigger block (903), the outer size of the membrane body (902) is loosely matched with the inner size of the water purifier outer box (1), and the bottom of the adjusting inner rod (601) is fixedly connected to the top of the outer mounting frame (901) around four sides.

4. A household water purification device according to claim 3, characterized in that: The control pipe assembly (3) comprises a three-way pipe (301), one side of the three-way pipe (301) is fixedly connected to a water inlet pipe (302) for water inlet, the other side of the three-way pipe (301) is fixedly connected to a forward flushing pipe (303), one side of the water purifier outer box (1) is provided with a mounting hole that matches the tolerance of the forward flushing pipe (303), the top of the three-way pipe (301) is fixedly connected to a backwashing pipe (304), and the top of the water purifier outer box (1) is provided with a mounting hole that matches the tolerance of the backwashing pipe (304).

5. A household water purification device according to claim 4, characterized in that: The ultrafiltration membrane assembly (9) is obliquely clamped in the middle of the inner side of the water tank (2), the positive flushing pipe (303) is located at the bottom of one side of the ultrafiltration membrane assembly (9), and the faucet discharge pipe (8) is located at the top of the other side of the ultrafiltration membrane assembly (9).

6. A household water purification device according to claim 4, characterized in that: The trigger block (903) and the trigger (7) are on the same vertical line, a second solenoid valve is fixedly installed on the outer side of the backwash pipe (304), a first solenoid valve is fixedly installed on the outer side of the forward flush pipe (303), and the trigger (7) is electrically connected to the second solenoid valve of the backwash pipe (304) and the first solenoid valve of the forward flush pipe (303).

7. A household water purification device according to claim 2, characterized in that: The regulating assembly (6) further comprises a connecting pipe (606), both sides of which are fixedly connected to exhaust pipes (605), the bottom of the exhaust pipe (605) is fixedly connected to the top of the exhaust port (604), an exhaust hole (607) is provided at the top of the middle part of the connecting pipe (606), and a dustproof net cylinder (5) is connected to the top of the water purifier outer box (1) by bolts, the dustproof net cylinder (5) is a hollow structure and is sleeved on the middle part of the outer side of the connecting pipe (606).

8. A household water purification device according to claim 1, characterized in that: A wastewater discharge pipe (4) is fixedly connected to the bottom of the water tank (2), and the wastewater discharge pipe (4) is in an inverted trapezoidal shape. A connecting hole matching the inner diameter tolerance of the wastewater discharge pipe (4) is provided at the bottom of the water purifier outer box (1), and the connecting hole of the water purifier outer box (1) is used to install a water pipe to communicate with the wastewater discharge pipe (4).

Images