Automatic filter element cleaning structure of water purifier

Abstract

The utility model discloses an automatic filter element cleaning structure of a water purifier, which belongs to the technical field of water purifiers and comprises a barrel, an end cover and a filter element, the end cover is fixed at one end of the barrel, a water purification cavity is formed between the end cover and the barrel, the filter element is arranged in the water purification cavity, a water storage tank is connected onto the end cover, a water storage cavity is arranged in the water storage tank, and an air bag is arranged in the water storage cavity. The water storage cavity is communicated with the water purification cavity, a water inlet, a water purification opening and a sewage draining opening are formed in the cylinder body or the end cover, and a sewage draining electric control device is arranged on the sewage draining opening. According to the structure, during normal water purification, purified water in the water purification cavity can enter the water storage cavity and extrude the air bag, so that high water pressure is formed in the water storage cavity, the sewage draining outlet can be automatically opened by the sewage draining electric control device, the water pressure in the water purification cavity is reduced, and the water pressure of the water storage cavity is released towards the water purification cavity, so that the purified water in the water purification cavity can reversely clean the filter element; and moreover, the sewage discharge electric control device can automatically open and close the sewage discharge port, so that the filter element can automatically perform back flushing within the set time.

Description

Technical Field

[0001] This utility model relates to the field of water purifier technology, specifically to an automatic cleaning structure for the filter element of a water purifier. Background Technology

[0002] Chinese Patent No. CN202410235436.2 discloses a novel backwashing water purifier, comprising a container, filter media, and a valve body. The container includes a main body bottle and a main body cap. The main body cap has an inlet channel, an outlet channel, and a drain channel, with the outlet channel communicating with the inner cavity of the main body bottle. The filter media is vertically arranged inside the container and has a raw water channel. The valve body is rotatably mounted on the main body cap, with a first connecting port and a second connecting port on its exterior. The first and second connecting ports are connected via an internal water cavity within the valve body. When the valve body is in the filtration state, the inlet channel communicates with the first connecting port, and the second connecting port communicates with the raw water channel to achieve filtration. When the valve body is in the backwashing state, the raw water channel communicates with the second connecting port, and the first connecting port communicates with the drain channel to achieve backwashing. However, the valve body requires manual operation to rotate, meaning that the filtration and backwashing functions of the water purifier cannot be switched intelligently, requiring users to handle both processes themselves, resulting in a poor user experience. Therefore, further improvements are necessary. Utility Model Content

[0003] The present invention aims to provide an automatic cleaning structure for the filter cartridge of a water purifier to overcome the shortcomings of the prior art.

[0004] An automatic filter cleaning structure for a water purifier designed for this purpose includes a cylinder, an end cap, and a filter element. The end cap is fixed to one end of the cylinder, and a clean water chamber is formed between the two. The filter element is disposed in the clean water chamber. A water storage tank is connected to the end cap. A water storage chamber is disposed inside the water storage tank. An air bladder is disposed inside the water storage chamber. The water storage chamber is interconnected with the clean water chamber. An inlet, a clean water outlet, and a drain outlet are provided on the cylinder or the end cap. A drain discharge electrical control device is provided on the drain outlet.

[0005] The end cap is provided with a connection hole, the water storage tank is provided with a connection protrusion, the connection protrusion is provided with a connection through hole communicating with the water storage cavity, the connection protrusion extends into the water purification cavity through the connection hole, and the two are fixed to each other by fasteners or snap-fit, and the water storage cavity is connected to the water purification cavity through the connection through hole.

[0006] The connecting protrusion is provided with a threaded portion, and a fastener is connected through the threaded portion to achieve a fixed connection between the water storage tank and the end cap.

[0007] The airbag is made of a soft material and is hemispherical. The airbag has a retaining edge around its perimeter, and the water tank has a retaining groove. The airbag is positioned and secured in the retaining groove by the retaining edge.

[0008] The hemispherical end of the airbag extends into the water storage cavity in a direction away from the connecting protrusion.

[0009] The cylinder is cylindrical and has a water inlet at one end. The other end of the cylinder is open and has a cylinder opening. The end cap is cylindrical and has an end cap opening at one end. The end cap opening is connected to the cylinder opening. The other end of the end cap has a connection hole. The clean water inlet is located on the side wall of the end cap, and the sewage outlet is located on the side wall of the cylinder.

[0010] The outer periphery of the cylinder opening is provided with an outer flange, and the outer periphery of the end cap opening is provided with an outer flange. A disassembly and assembly connecting ring is provided between the outer flange of the cylinder and the outer flange of the end cap, and the two are disassembled and assembled through the disassembly and assembly connecting ring.

[0011] The filter element is provided with a positioning ring at its end. The filter element is placed in the cylinder and the end cap through the cylinder opening and the end cap opening, respectively. The filter element is positioned between the outer flange of the cylinder and the outer flange of the end cap by the positioning ring. The disassembly and assembly connection ring is fastened to the outer flange of the cylinder, the positioning ring, and the outer flange of the end cap.

[0012] The filter element is provided with a cylindrical seal and an end cap seal. The cylindrical seal and the end cap seal are located on both sides of the positioning ring. The filter element is sealed to the cylindrical body through the cylindrical seal and to the end cap through the end cap seal.

[0013] The sewage discharge electrical control device includes a solenoid valve and a sewage discharge electrical control board. The solenoid valve is connected to the sewage discharge port, and the sewage discharge electrical control board is electrically connected to the solenoid valve and controls the solenoid valve to open or close.

[0014] This invention, through structural improvements, places the filter element within the purified water chamber formed between the cylinder and the end cap, and connects a water storage tank to the end cap, allowing the water storage chamber and the purified water chamber to communicate with each other. An air bladder is installed within the water storage chamber, allowing purified water from the purified water chamber to enter the storage chamber during normal purification and compress the air bladder, creating a certain water pressure within the storage chamber. When cleaning of the filter element is required, the drain control device automatically opens the drain port, reducing the water pressure in the purified water chamber and releasing the water pressure from the storage chamber towards the purified water chamber. This allows the purified water in the purified water chamber to perform reverse cleaning of the filter element. This not only prevents the filter element from becoming clogged in the micropores due to prolonged use, resulting in poor filtration performance and extending the product's lifespan, but also, because the drain control device can automatically open and close the drain port, it allows the filter element to automatically run a reverse flush within a set time, eliminating manual operation and improving the user experience. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the assembly structure of an embodiment of the present utility model.

[0016] Figure 2 This is a schematic diagram of the assembly structure from another perspective of an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the assembly cross-sectional structure of an embodiment of the present invention.

[0018] Figure 4 This is an exploded structural diagram of an embodiment of the present invention.

[0019] Figure 5 This is an exploded structural diagram from another perspective of an embodiment of the present invention. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] See Figures 1-5The automatic cleaning structure of this water purifier includes a cylinder 1, an end cap 2, and a filter element 3. The end cap 2 is fixed to one end of the cylinder 1, and a clean water chamber 4 is formed between the two. The filter element 3 is placed in the clean water chamber 4. A water storage tank 5 is connected to the end cap 2. A water storage chamber 6 is set inside the water storage tank 5. An air bladder 7 is set inside the water storage chamber 6. The water storage chamber 6 and the clean water chamber 4 are interconnected. A water inlet 8, a clean water outlet 9, and a sewage outlet 10 are set on the cylinder 11 or the end cap 2. A sewage discharge electrical control device 11 is set on the sewage outlet 10.

[0023] In this embodiment, the filter element 3 is placed in the water purification chamber 4 formed between the cylinder 1 and the end cap 2, and a water storage tank 5 is connected to the end cap 2, so that the water storage chamber 6 of the water storage tank 5 is connected to the water purification chamber 4. At the same time, an air bladder 7 is set in the water storage chamber 6 so that the purified water in the water purification chamber 4 can enter the water storage chamber 6 during normal water purification and squeeze the air bladder 7 to form a certain water pressure in the water storage chamber 6. When the filter element 3 needs to be cleaned, the sewage discharge control device 11 automatically opens the sewage outlet 10, the water pressure in the water purification chamber 4 decreases, and the water pressure in the water storage chamber 6 is released towards the water purification chamber 4, so that the purified water in the water purification chamber 4 can perform reverse cleaning of the filter element 3. This not only avoids the problem of micropore blockage caused by long-term use of the filter element 3, resulting in poor filtration effect and improving the service life of the product, but also allows the filter element 3 to automatically run reverse flushing within a set time because the sewage discharge control device 11 can automatically open and close the sewage outlet 10, thus avoiding manual operation and improving the user experience.

[0024] The end cap 2 is provided with a connection hole 12, and the water storage tank 5 is provided with a connection protrusion 13. The connection protrusion 13 is provided with a connection through hole 14 that communicates with the water storage chamber 6. The connection protrusion 13 extends into the water purification chamber 4 through the connection hole 12, and the two are fixed to each other by fasteners or snap-fit. The water storage chamber 6 communicates with the water purification chamber 4 through the connection through hole 14.

[0025] The connecting protrusion 13 is provided with a threaded part 15, and a fastener is connected through the threaded part 15 to achieve a fixed connection between the water storage tank 5 and the end cover 2.

[0026] In this embodiment, a step is provided between the connecting protrusion 13 and the threaded part 15. After the fastener and the threaded part 15 are used, they act on the step and cover the connecting through hole 14, thereby realizing a stable connection between the water storage tank 5 and the end cover 2. Its structure is simple, easy to disassemble and assemble, and has high connection stability.

[0027] In addition, a sealing ring is also provided on the connecting protrusion 13. The fastener is sealed on the connecting through hole 14 through the sealing ring, thereby realizing the sealed connection between the water storage chamber 6 and the water purification chamber 4.

[0028] The airbag 7 is made of soft material and is hemispherical. The airbag 7 has a retaining edge 16 around its perimeter, and the water tank 5 has a retaining groove 17. The airbag 7 is positioned and secured in the retaining groove 17 by the retaining edge 16.

[0029] In this embodiment, the water storage tank 5 is composed of a tank body and a tank end plate. The slot 17 is set on the outer edge between the tank end plates. During production, the air bag 7 is pre-positioned and locked onto the slot 17 of the tank end plate by the locking edge 16. Then, the tank body and the tank end plate are fixed to each other by welding so that the water storage tank 5 and the filter element 3 can be connected.

[0030] The hemispherical end of the airbag 7 extends into the water storage cavity 6 in a direction away from the connecting protrusion 13.

[0031] In this embodiment, during normal water purification, the purified water in the purification chamber 4 acts on the airbag 7 through the connecting hole 14, causing the airbag 7 to be squeezed, stretched, and deformed towards the water storage chamber 6. At this time, a certain water pressure is formed in the water storage chamber 6. When the sewage discharge control device 11 automatically opens the sewage outlet 10, the water pressure in the purification chamber 4 decreases, and the airbag 7 elastically resets under the action of the high water pressure in the water storage chamber 6, so that the water pressure in the water storage chamber 6 is released towards the purification chamber 4 through the connecting hole 14, so that the purified water in the purification chamber 4 can perform reverse cleaning of the filter element 3.

[0032] The cylinder 1 is cylindrical and has a water inlet 8 at one end. The other end of the cylinder 1 is open and has a cylinder opening 18. The end cap 2 is cylindrical and has an open end cap opening 19 at one end. The end cap opening 19 is connected to the cylinder opening 18 to achieve assembly between the cylinder 1 and the end cap 2, thereby simplifying the assembly process.

[0033] The other end of the end cap 2 is provided with a connection hole 12, the clean water inlet 9 is provided on the side wall of the end cap 2, and the sewage outlet 10 is provided on the side wall of the cylinder 1.

[0034] The outer periphery of the cylinder opening 18 is provided with an outer flange, and the outer periphery of the end cover opening 19 is provided with an outer flange. A disassembly and assembly connecting ring 20 is provided between the outer flange of the cylinder and the outer flange of the end cover, and the two are disassembled and assembled through the disassembly and assembly connecting ring 20.

[0035] The filter element 3 is provided with a positioning ring 21 at its end. The filter element 3 is placed in the cylinder 1 and the end cover 2 through the cylinder opening 18 and the end cover opening 19, respectively. The filter element 3 is positioned between the outer flange of the cylinder and the outer flange of the end cover by the positioning ring 21. The disassembly and assembly connection ring 20 acts as a fastener on the outer flange of the cylinder, the positioning ring 21, and the outer flange of the end cover.

[0036] In this embodiment, the fastening effect of the disassembly and assembly connecting ring 20 on the outer flange of the cylinder, the positioning ring 21, and the outer flange of the end cap is used to effectively achieve a stable assembly between the cylinder 1, the filter element 3, and the end cap 2. This not only simplifies the disassembly and assembly process and makes it easier for users to disassemble and replace the filter element 3, but also ensures the stability of the assembly between the cylinder 1, the filter element 3, and the end cap 2.

[0037] The filter element 3 is provided with a cylindrical seal 22 and an end cap seal 23. The cylindrical seal 22 and the end cap seal 23 are located on both sides of the positioning ring 21. The filter element 3 is sealed with the cylindrical body 1 through the cylindrical seal 22, and the filter element 3 is sealed with the end cap 2 through the end cap seal 23.

[0038] In this embodiment, the filter element 3 is a hollow fiber ultrafiltration membrane, which is placed in the water purification chamber 4. At the same time, the filter element 3 is positioned between the outer flange of the cylinder and the outer flange of the end cap using the positioning ring 21. Then, the cylinder seal 22 and the end cap seal 23 are used to seal and cooperate with the cylinder 1 and the end cap 2 respectively. This not only makes assembly convenient, but also avoids water leakage problems during product use.

[0039] In this embodiment, a cylinder fixing seat 100 is provided on the cylinder body 1, and an end cap fixing seat 200 is provided on the end cap 2. The disassembly and assembly connecting ring 20 is a clamp, and a clamp protection seat 300 is provided at its tightness point to protect the tightness point of the disassembly and assembly connecting ring 20, so as to ensure a stable connection between the cylinder body 1, the end cap 2 and the filter element 3. The cylinder fixing seat 100, the end cap fixing seat 200 and the clamp protection seat 300 are respectively provided with fixing parts, so that the entire water purifier can be fixedly assembled on the ground, countertop or wall through the fixing parts on the cylinder fixing seat 100, the end cap fixing seat 200 and the clamp protection seat 300, thereby improving the stability of the water purifier in use.

[0040] The sewage discharge electrical control device 11 includes a solenoid valve and a sewage discharge electrical control board. The solenoid valve is connected to the sewage discharge port 10, and the sewage discharge electrical control board is electrically connected to the solenoid valve and controls the solenoid valve to open or close.

[0041] When the sewage discharge control board closes the solenoid valve, the sewage outlet 10 is also closed. Raw water enters the water purification chamber 4 from the water inlet 8 and is filtered through the filter element 3. The purified water in the water purification chamber 4 also enters the water storage chamber 6. The water storage chamber 6 forms a certain water pressure through the elastic deformation of the air bladder 7. The user can open and close the water purification outlet 9 to use the purified water.

[0042] When filter element 3 has been used for a certain period of time, the drain control board controls the solenoid valve to open, and the drain port 10 is also in the open state. The water pressure in the clean water chamber 4 decreases, the air bag 7 elastically resets, and the water pressure in the water storage chamber 6 is released towards the clean water chamber 4, so that the clean water in the clean water chamber 4 can perform reverse cleaning on filter element 3, causing the material attached to the micropores of filter element 3 to be flushed out to the cylinder 1 and finally discharged from the drain port 10, thereby completing the reverse flushing of filter element 3.

[0043] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A filter core automatic cleaning structure of a water purifier, comprising a cylinder (1), an end cover (2) and a filter core (3), characterized in that: The end cap (2) is fixed to one end of the cylinder (1) and a water purification chamber (4) is formed between the two. The filter element (3) is disposed in the water purification chamber (4). A water storage tank (5) is connected to the end cap (2). A water storage chamber (6) is disposed in the water storage tank (5). An air bladder (7) is disposed in the water storage chamber (6). The water storage chamber (6) is connected to the water purification chamber (4). An inlet (8), a water purification port (9), and a sewage outlet (10) are disposed on the cylinder (1) or the end cap (2). A sewage discharge control device (11) is disposed on the sewage outlet (10).

2. The filter core automatic cleaning structure of the water purifier according to claim 1, characterized in that: The end cap (2) is provided with a connecting hole (12), the water storage tank (5) is provided with a connecting protrusion (13), the connecting protrusion (13) is provided with a connecting through hole (14) communicating with the water storage chamber (6), the connecting protrusion (13) extends into the water purification chamber (4) through the connecting hole (12), and the two are fixed to each other by fasteners or snap-fit, and the water storage chamber (6) is connected to the water purification chamber (4) through the connecting through hole (14).

3. The filter core automatic cleaning structure of the water purifier according to claim 2, characterized in that: The connecting protrusion (13) is provided with a threaded part (15), and a fastener is connected through the threaded part (15) to achieve a fixed connection between the water storage tank (5) and the end cover (2).

4. The filter core automatic cleaning structure of the water purifier according to claim 2, characterized in that: The airbag (7) is made of soft material and is hemispherical. The airbag (7) has a retaining edge (16) around its periphery. The water tank (5) has a retaining groove (17). The airbag (7) is positioned and secured in the retaining groove (17) by the retaining edge (16).

5. The filter core automatic cleaning structure of the water purifier according to claim 4, characterized in that: The hemispherical end of the airbag (7) extends into the water storage cavity (6) in a direction away from the connecting protrusion (13).

6. The filter cartridge automatic cleaning structure of the water purifier according to claim 2, characterized in that: The cylinder (1) is cylindrical and has the water inlet (8) at one end. The other end of the cylinder (1) is open and has a cylinder opening (18). The end cap (2) is cylindrical and has an end cap opening (19) at one end. The end cap opening (19) is connected to the cylinder opening (18). The other end of the end cap (2) has the connection hole (12). The clean water inlet (9) is located on the side wall of the end cap (2). The sewage outlet (10) is located on the side wall of the cylinder (1).

7. The filter cartridge automatic cleaning structure of the water purifier according to claim 6, characterized in that: The outer periphery of the cylinder opening (18) is provided with an outer flange, and the outer periphery of the end cap opening (19) is provided with an outer flange. A disassembly and assembly connecting ring (20) is provided between the outer flange of the cylinder and the outer flange of the end cap, and the two are disassembled and assembled through the disassembly and assembly connecting ring (20).

8. The filter cartridge automatic cleaning structure of the water purifier according to claim 7, characterized in that: The filter element (3) is provided with a positioning ring (21) at its end. The filter element (3) is placed in the cylinder (1) and the end cap (2) through the cylinder opening (18) and the end cap opening (19) respectively. The filter element (3) is positioned between the outer flange of the cylinder and the outer flange of the end cap by the positioning ring (21). The disassembly and assembly connection ring (20) is fastened to the outer flange of the cylinder, the positioning ring (21) and the outer flange of the end cap.

9. The filter cartridge automatic cleaning structure of the water purifier according to claim 8, characterized in that: The filter element (3) is provided with a cylindrical seal (22) and an end cap seal (23). The cylindrical seal (22) and the end cap seal (23) are located on both sides of the positioning ring (21). The filter element (3) is sealed to the cylindrical body (1) through the cylindrical seal (22), and the filter element (3) is sealed to the end cap (2) through the end cap seal (23).

10. The filter cartridge automatic cleaning structure of the water purifier according to claim 1, characterized in that: The sewage discharge electrical control device (11) includes a solenoid valve and a sewage discharge electrical control board. The solenoid valve is connected to the sewage outlet (10), and the sewage discharge electrical control board is electrically connected to the solenoid valve and controls the solenoid valve to open or close.

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