Membrane filtration equipment with self-cleaning function

Abstract

The invention discloses membrane filtration equipment with a self-cleaning function, and relates to the technical field of membrane filtration, raw water is controlled by a raw water pump pipe to enter a cylindrical shell through a first valve pipe, the raw water is injected from an end sealing seat at the bottom of the inner wall of the cylindrical shell, the raw water is in contact with membrane wires, the raw water is filtered by the membrane wires, and the raw water is filtered by the membrane wires. Filtered raw water infiltrates from a notch in the lower side of the water filtering pipe, the filtered water rises in the water filtering pipe through slow infiltration, the filtered water rises from the interior of the water filtering pipe and enters a water filtering pump pipe with a second valve pipe to flow to subsequent system components, part of the raw water is converted into concentrated water after being treated by membrane filaments, and the concentrated water rises in a cylindrical shell and then flows into the cylindrical shell. Concentrated water flows towards one side of a third valve pipe and enters a concentrated water pump pipe, the concentrated water pump pipe conveys the concentrated water, impurities are accumulated after the cylindrical shell and the membrane filaments are operated for a long time, and the inner wall of the cylindrical shell is rubbed through a cleaning part, so that the effect of rubbing the inner wall of the shell is achieved.

Description

Technical Field

[0001] This invention relates to the field of membrane filtration technology, specifically to a membrane filtration device with a self-cleaning function. Background Technology

[0002] Membrane filtration water treatment equipment is a device that uses membranes made of specific materials as the filter medium to separate and remove impurities in water through physical or chemical methods.

[0003] However, during use, although the membrane filtration device used in the membrane filtration equipment has a good filtration effect, after long-term use, the outer surface of the filter membrane will still be blocked by impurities in the water source that are invisible to the naked eye, which will lead to a decrease in filtration effect. Therefore, the filter components need to be replaced regularly, but the replacement process will cause the entire equipment to stop working, which will affect the filtration efficiency. Chinese patent CN120903743A discloses a membrane filtration water treatment device that allows maintenance personnel to easily remove and replace the filter membrane without interrupting the operation of the entire device, thus ensuring overall filtration efficiency. However, it has certain shortcomings in cleaning the internal parts of the device and in reducing the frequency of component replacement and extending the service life of the components. However, after prolonged operation, the membrane fibers of existing equipment tend to accumulate excessive impurities, which can affect the subsequent filtration effect of the components. Furthermore, the cleaning methods for the membrane fibers are relatively simple or inefficient, thus extending the service life of the membrane fibers. Therefore, a new design has been developed to address these issues. Summary of the Invention

[0004] To address the aforementioned problems, the present invention provides the following technical solution: A membrane filtration device with self-cleaning function includes a support frame. A cylindrical shell is fixedly connected to one side of the support frame. A first valve pipe is fixedly connected to the bottom of the cylindrical shell. A raw water pump pipe is fixedly connected to the side of the first valve pipe away from the cylindrical shell. The raw water pump pipe controls the raw water to enter the cylindrical shell through the first valve pipe. A second valve pipe is fixedly connected to the top of the cylindrical shell. A filter water pump pipe is fixedly connected to the side of the second valve pipe away from the cylindrical shell. A third valve pipe is fixedly connected to the upper side of the cylindrical shell. A concentrate pump pipe is fixedly connected to the side of the third valve pipe away from the cylindrical shell. Part of the raw water is converted into concentrate after being treated by the membrane fibers. After rising inside the cylindrical shell, the concentrate flows towards the third valve pipe and enters the concentrate pump pipe. The concentrate pump pipe transports the concentrate for subsequent treatment, thereby maintaining the normal operation of the device. End seals are fixedly connected to the upper and lower sides of the inner wall of the cylindrical shell. Raw water flows from the cylindrical shell... The raw water is injected into the end-sealing seat at the bottom of the inner wall, and comes into contact with the membrane fibers. A filter pipe is fixedly connected between the opposite faces of the end-sealing seats. The filtered raw water seeps in from the groove on the lower side of the filter pipe. The filtered water rises slowly inside the filter pipe and flows through the second valve pipe into the filter pump pipe to the subsequent system components, thus facilitating subsequent treatment. The membrane fibers are fixedly connected between the opposite faces of the end-sealing seats. The membrane fibers filter the raw water. Through their own microporous sieving structure, they achieve precise separation of small molecule purification substances and large molecule pollutants in the raw water under pressure. A cleaning component is fixedly connected to the inner wall of the cylindrical shell. After long-term operation, the cylindrical shell and membrane fibers accumulate impurities, which damage the filtration performance, causing equipment failure, damaging core components, shortening equipment life, increasing operating costs, and reducing economic benefits. The cleaning component rubs against the inner wall of the cylindrical shell to reduce the accumulation of impurities, thereby ensuring continuous operation of the equipment, preventing interference with liquid flow, and improving the efficiency of subsequent cleaning. The cleaning component includes an electric push rod, which is located on the upper and lower sides of the inner wall of the cylindrical housing and is divided into upper and lower parts. When not in operation, the electric push rod retracts to control the cleaning disc to approach the sides of the inner wall of the cylindrical housing, reducing the impact on the raw water flow and ensuring normal operation of the equipment. The outer side of the electric push rod is fixedly connected to the edge of the inner wall of the cylindrical housing, and the cleaning disc is fixedly connected to one side of the outer side of the electric push rod. During operation, the upper electric push rod controls the cleaning disc to extend and retract, causing the cleaning disc to rub against the inner wall of the cylindrical housing, thereby achieving the function of cleaning impurities, removing deposited impurities on the inner wall of the cylindrical housing, unblocking the raw water flow channel, relieving the fouling pressure on the membrane fibers, extending the service life of the membrane fibers, improving the self-cleaning ability of the equipment, reducing maintenance costs, and facilitating the subsequent discharge of impurities.

[0005] Preferably, the cleaning disc has a circular groove on its outer surface, which extends through the disc to facilitate the flow of raw water inside the cylindrical shell. The circular groove is aligned with and wraps around the outside of the membrane fibers. A friction device is rotatably connected to the inner wall of the circular groove. When the electric push rod controls the cleaning disc to extend and retract, scraping the inner wall of the cylindrical shell, the cleaning disc drives the friction device to rub the surface of the membrane fibers. This reduces impurities on the surface of the components, peels off the filter cake layer and contaminants from the surface of the membrane fibers, restores the filtration performance of the membrane fibers, prevents deep penetration of contaminants, protects the structural integrity of the membrane fibers, reduces the frequency of backwashing and chemical cleaning, extends the life of the membrane fibers, and reduces operating costs.

[0006] Preferably, an annular groove is formed on the arc-shaped side of the outer side of the cleaning disc. A plastic film is fixedly connected to the inner wall of the annular groove, and an elastic ball supports the plastic film. The plastic film is positioned on the outer side of the cleaning disc. When the plastic film rubs against the inner wall of the cylindrical shell, the plastic film is subjected to the reaction force of the inner wall of the cylindrical shell, and the plastic film squeezes the elastic ball, causing the elastic ball to adjust according to the pressure change inside the plastic film, thereby achieving the effect of adaptive friction. The elastic ball is provided between the annular groove and the opposite surface of the plastic film, which improves the adhesion of the plastic film to the inner wall of the cylindrical shell, further improves the friction effect, and reduces the dead angle of friction of the parts. At the same time, the plastic film is made of plastic material, which can adaptively scrape and clean the inner wall of the shell, remove deposited impurities without damaging the equipment. The flexible brush reduces the secondary re-flying of impurities, reduces the pressure of secondary pollution of the membrane fibers from the source, and thus extends the service life of the equipment.

[0007] Preferably, a backwash pump pipe is fixedly connected to the inner side of the support frame. The backwash pump pipe introduces cleaning liquid into the cylindrical housing through a plastic hose from the first valve pipe. The liquid fills the membrane fibers and filter pipe, soaking the membrane fibers for 30 to 60 minutes to remove stubborn contaminants. During the soaking process, it adapts to the cleaning components. A plastic hose is fixedly connected to the outer side of the backwash pump pipe, and one side of the outer side of the plastic hose is fixedly connected to the outer side of the first valve pipe. A drain pipe is fixedly connected to the lower side of the outer side of the cylindrical housing. During the soaking process, the cleaning components rub against the cylindrical housing and membrane fibers to further improve cleaning efficiency and quality. After soaking, the fourth valve pipe controls the liquid to flow to the drain pipe to facilitate liquid discharge. During the liquid discharge process, impurities are carried out. A fourth valve pipe is fixedly connected between the drain pipe and the opposite side of the cylindrical housing. An air duct component is fixedly connected to the outer side of the cylindrical housing away from the third valve pipe.

[0008] Preferably, the friction tool includes an annular frame, with a curved plate fixedly connected to the inner side of the annular frame. As the cleaning disc moves with the extension and retraction of the electric push rod, the cleaning disc drives the annular frame to work, causing the curved plate to rub against the surface of the membrane fibers. When the curved plate rubs against the membrane fibers, it drives the annular frame to rotate inside the annular groove, thereby achieving the effect of rotating the friction component. The dual-motion composite cleaning achieves full-surface peeling without dead corners on the outer side of the membrane fibers, precisely acting on the outer side of the membrane fibers, and quickly restoring the filtration performance of the membrane fibers. An arc-shaped groove is opened on the outer side of the curved plate away from the annular frame, and an arc-shaped groove is opened on the surface of the curved plate to increase the texture of the component surface, further improving the friction effect on the component and improving the cleaning efficiency.

[0009] Preferably, the air duct component includes an air duct housing, a fan fixedly connected to one side of the outer side of the air duct housing, a grid plate fixedly connected to the outer side of the air duct housing near the fan, and a transfer pipe fixedly connected to the outer side of the air duct housing away from the fan. The fan generates airflow, which flows from the air duct housing towards the transfer pipe, which then diverts the airflow. A middle pipe is fixedly connected to the outer side of the transfer pipe, allowing airflow to flow from the transfer pipe towards the middle pipe and into the cylindrical housing. This achieves the effect of airflow rinsing the equipment, introducing air into the equipment to dry residual cleaning fluid and waste liquid in the flow channel. During the drying process, moisture evaporation from internal components is accelerated, reducing the impact on components, quickly dehydrating, and shortening the cleaning cycle. The middle pipe adopts a structure that is wide at both ends and narrow in the middle. According to Bernoulli's principle, by reducing the pipe diameter, the airflow speed is increased, improving the operating efficiency of the component. A valve is fixedly connected to the outer side of the middle pipe away from the transfer pipe.

[0010] Preferably, a partition plate is fixedly connected to the pipe inside the air duct housing. The airflow flows inside the air duct housing, and the partition plate acts to separate the airflow and intercept impurities in the airflow, thereby reducing the amount of airflow entering the cylindrical housing and reducing the difficulty of cleaning the inside of the equipment. A check valve is fixedly connected to the inner wall of the air duct housing away from the fan. When the airflow generates wind force from the fan side, the check valve creates space to facilitate the flow of wind force. When the airflow stops, the check valve acts as a seal to prevent gas leakage, thereby ensuring the normal operation of the equipment.

[0011] Preferably, a dryer is fixedly connected to the top of the duct housing. The dryer generates hot airflow, which enters the duct housing and flows into the interior of the cylindrical housing, thereby drying the inner wall components of the cylindrical housing. This drying and protection inhibits the growth of microorganisms, fundamentally suppressing the reproduction of bacteria and algae, reducing the corrosion of membrane fibers by biological pollution, extending the service life of the membrane fibers, achieving deep drying, solidification and cleaning effects, preventing pollution rebound, and realizing deep drying inside the equipment. This allows residual trace pollutants to lose their adhesion medium and prevent them from forming a stable pollution layer again. It also removes moisture and prevents the formation and solidification of stubborn scale. A grid cover is fixedly connected to the inner wall of the duct housing near the dryer pipe. The grid cover acts as a barrier to prevent impurities carried by the fan airflow from entering and causing blockage of the pipe. A friction component is fixedly connected to the outer side of the grid cover.

[0012] Preferably, the friction assembly includes a fixed end, with a connecting shaft rotatably connected to the inner wall of the fixed end. A paddle is fixedly connected to one side of the connecting shaft. Dry airflow acts on the paddle, which drives the connecting shaft to rotate. The connecting shaft drives the friction bracket to rotate, causing the friction bracket to control the friction colloid to rub against the surface of the grid cover. This achieves the function of cleaning impurities on the surface of the components, reducing impurity adhesion, maintaining smooth airflow, and facilitating subsequent cleaning of deposited impurities. The friction bracket is fixedly connected to the side of the connecting shaft away from the paddle, and the friction colloid is rotatably connected to the side of the friction bracket near the grid cover. The friction colloid has a certain deformation effect, increasing the adhesion during rotational friction, further improving the friction effect, and reducing wear between components, thereby extending the service life of the components.

[0013] This invention provides a membrane filtration device with a self-cleaning function. It has the following beneficial effects: I. This self-cleaning membrane filtration device features an elastic ball supporting a plastic membrane positioned outside the cleaning disc. When the plastic membrane rubs against the inner wall of the cylindrical housing, it experiences a reaction force from the inner wall, causing the elastic ball to adjust according to pressure changes. This self-adaptive friction mechanism improves the membrane's fit to the inner wall, further enhancing friction and reducing dead angles in the components. The plastic membrane, made of plastic, also self-cleans the inner wall, removing deposited impurities without damaging the equipment. The flexible brush reduces secondary agitation of impurities, minimizing secondary contamination of the membrane fibers and extending the equipment's lifespan.

[0014] II. This self-cleaning membrane filtration device, during the extension and retraction of the cleaning disc along with the electric push rod, drives the annular frame to operate, causing the curved plate to rub against the membrane fiber surface. When the curved plate rubs against the membrane fiber, it drives the annular frame to rotate inside the annular groove, thereby achieving the effect of rotating the friction component. This dual-motion composite cleaning achieves full-surface peeling without dead corners on the outer side of the membrane fiber, precisely acting on the outer side of the membrane fiber, and quickly restoring the membrane fiber filtration performance. The curved plate surface has arc-shaped grooves to increase the texture of the component surface, further improving the friction effect on the component and increasing the cleaning efficiency.

[0015] III. This self-cleaning membrane filtration device uses a fan to generate airflow, which flows from the duct housing to the adapter pipe. The adapter pipe then diverts the airflow, directing it from the adapter pipe to the middle pipe and into the cylindrical housing. This achieves the effect of airflow rinsing the equipment. Air is introduced into the equipment to dry any residual cleaning fluid and waste liquid in the flow channel. During the drying process, moisture evaporation from internal components is accelerated, reducing the impact on components, and quickly dehydrating, thus shortening the cleaning cycle. The middle pipe adopts a structure that is wide at both ends and narrow in the middle. Based on Bernoulli's principle, by reducing the pipe diameter, the airflow velocity is increased, improving the operating efficiency of the components. The airflow flows inside the duct housing, and the partition plate separates the airflow, intercepting impurities in the airflow, thereby reducing the amount of airflow entering the cylindrical housing and reducing the difficulty of cleaning the inside of the equipment. The airflow is generated from one side of the fan. When the airflow washes against the check valve, the check valve creates space to facilitate airflow. When the airflow stops, the check valve closes, preventing gas leakage and ensuring the normal operation of the equipment.

[0016] IV. This self-cleaning membrane filtration equipment generates hot airflow through a dryer. The airflow enters the duct housing and flows into the cylindrical housing, thereby drying the inner wall components of the cylindrical housing. This drying and protection inhibits microbial growth, fundamentally suppressing the reproduction of bacteria and algae, reducing the corrosion of membrane fibers by biological pollution, extending the service life of the membrane fibers, and achieving deep drying and solidification cleaning effects. It prevents pollution rebound and achieves deep drying inside the equipment, so that residual trace pollutants lose their adhesing medium and cannot form a stable pollution layer again. It removes moisture and prevents the formation and solidification of stubborn scale. The grid cover acts as a barrier to prevent impurities carried by the fan airflow from entering and avoiding blockage of the pipeline.

[0017] Fifth, this membrane filtration device with self-cleaning function uses a dry airflow acting on a paddle plate. The paddle plate drives the connecting shaft to rotate, which in turn drives the friction bracket to rotate. This causes the friction bracket to control the friction colloid to rub against the surface of the grid cover, thereby cleaning impurities from the component surface, reducing impurity adhesion, maintaining smooth airflow, and facilitating subsequent cleaning of deposited impurities. Furthermore, the friction colloid has a certain deformation effect, increasing adhesion during rotational friction, further enhancing the friction effect, reducing wear between components, and thus extending the service life of the components. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the external structure of the membrane filtration device with self-cleaning function of the present invention; Figure 2 This is a schematic diagram of the membrane filtration device of the present invention; Figure 3 This is a schematic cross-sectional view of the membrane filtration device of the present invention; Figure 4 This is a schematic diagram of the cleaning component structure of the present invention; Figure 5 This is a schematic diagram of a partial structure of the cleaning component of the present invention; Figure 6 This is a schematic diagram of the friction tool structure of the present invention; Figure 7 This is a schematic diagram of the air duct component structure of the present invention; Figure 8 This is a schematic cross-sectional view of the air duct component of the present invention; Figure 9 This is a partial structural diagram of the air duct component of the present invention; Figure 10 This is a schematic cross-sectional view of the friction assembly of the present invention.

[0019] In the diagram: 1. Support frame; 2. Raw water pump pipe; 3. First valve pipe; 4. Cylindrical housing; 5. Second valve pipe; 6. Filter water pump pipe; 7. Concentrate pump pipe; 8. Cleaning component; 9. Air duct component; 10. Third valve pipe; 11. Backflush pump pipe; 12. Plastic hose; 13. Drain pipe; 14. Fourth valve pipe; 15. End seal; 16. Membrane fiber; 17. Filter water pipe; 81. Electric push rod; 82. Cleaning disc; 83. Annular groove; 84. Circular slot; 85. Friction tool; 86. Plastic 87. Membrane; 851. Elastic sphere; 852. Annular frame; 853. Curved plate; 854. Arc groove; 905. Duct housing; 906. Fan; 907. Grille; 908. Transfer pipe; 909. Intermediate pipe; 900. Valve; 901. Divider plate; 901. Check valve; 902. Dryer; 913. Grille cover; 914. Friction assembly; 915. Fixed end; 916. Paddle plate; 917. Friction bracket; 918. Friction colloid; 919. Connecting shaft. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] First embodiment, such as Figures 1 to 6 As shown, the present invention provides a technical solution: a membrane filtration device with self-cleaning function, including a support frame 1, a cylindrical shell 4 fixedly connected to one side of the support frame 1, a first valve pipe 3 fixedly connected to the bottom of the cylindrical shell 4, a raw water pump pipe 2 fixedly connected to the side of the first valve pipe 3 away from the cylindrical shell 4, a second valve pipe 5 fixedly connected to the top of the cylindrical shell 4, a filter water pump pipe 6 fixedly connected to the side of the second valve pipe 5 away from the cylindrical shell 4, and a third valve pipe 10 fixedly connected to the upper side of the cylindrical shell 4. A concentrate pump pipe 7 is fixedly connected to the side of the valve pipe 10 away from the cylindrical housing 4. End seals 15 are fixedly connected to the upper and lower sides of the inner wall of the cylindrical housing 4. A filter pipe 17 is fixedly connected to the middle between the opposite faces of the end seals 15. A membrane fiber 16 is fixedly connected between the opposite faces of the end seals 15. A cleaning component 8 is fixedly connected to the inner wall of the cylindrical housing 4. The raw water pump pipe 2 controls the raw water to enter the interior of the cylindrical housing 4 through the first valve pipe 3. The raw water is injected from the end seal 15 at the bottom of the inner wall of the cylindrical housing 4. The raw water comes into contact with the membrane fiber 16. The raw water is filtered through a microporous sieve structure under pressure to precisely separate small-molecule purification substances from large-molecule pollutants. The filtered raw water seeps into the groove at the bottom of the filter pipe 17, slowly rising inside the filter pipe 17. The filtered water then flows through the second valve pipe 5 into the filter pump pipe 6, facilitating subsequent system components. Part of the raw water is converted into concentrate after being treated by the membrane fibers. The concentrate rises inside the cylindrical shell 4 and flows to the third valve pipe 10, entering the concentrate pump pipe 7. The concentrate pump pipe 7 transports the concentrate for subsequent treatment, ensuring the normal operation of the equipment. After prolonged operation, impurities accumulate in the cylindrical shell 4 and the membrane fibers 16, damaging the filtration performance, causing equipment failure, damaging core components, shortening equipment life, increasing operating costs, and reducing economic benefits. The cleaning component 8 rubs against the inner wall of the cylindrical shell 4, reducing impurity accumulation, ensuring continuous operation of the equipment, preventing interference with liquid flow, and improving subsequent cleaning efficiency.

[0022] The cleaning component 8 includes an electric push rod 81, the outer side of which is fixedly connected to the edge of the inner wall of the cylindrical housing 4. A cleaning disc 82 is fixedly connected to one side of the outer side of the electric push rod 81. The electric push rod 81 is located on the upper and lower sides of the inner wall of the cylindrical housing 4, and is divided into upper and lower parts. When not in operation, the electric push rod 81 retracts to control the cleaning disc 82 to move closer to the sides of the inner wall of the cylindrical housing 4, reducing the impact on the flow of raw water and ensuring normal operation of the equipment. During operation, the upper electric push rod 81 controls the cleaning disc 82 to extend and retract, causing the cleaning disc 82 to rub against the inner wall of the cylindrical housing 4, thereby cleaning impurities, removing deposited impurities from the inner wall of the cylindrical housing, unblocking the raw water flow channel, relieving the fouling pressure on the membrane fibers, extending the service life of the membrane fibers, improving the self-cleaning ability of the equipment, reducing maintenance costs, and facilitating the subsequent discharge of impurities.

[0023] The cleaning disc 82 has a circular slot 84 on its exterior, and a friction device 85 is rotatably connected to the inner wall of the circular slot 84. The circular slots 84 are evenly distributed on the surface of the cleaning disc 82, arranged in a ring array along the circumference. The inner wall of the circular slots 84 is perpendicular to the surface of the cleaning disc 82, and the circular slots 84 penetrate the cleaning disc 82, facilitating the flow of raw water inside the cylindrical shell 4. The circular slots 84 are aligned and wrapped around the outside of the membrane fibers 16. When the electric push rod 81 controls the extension and retraction of the cleaning disc 82 to scrape the inner wall of the cylindrical shell 4, the cleaning disc 82 drives the friction device 85 to rub the surface of the membrane fibers 16, thereby reducing impurities on the component surface, peeling off the filter cake layer and contaminants on the surface of the membrane fibers, restoring the filtration performance of the membrane fibers, preventing deep penetration of contaminants, protecting the structural integrity of the membrane fibers, reducing the frequency of backwashing and chemical cleaning, extending the life of the membrane fibers, and reducing operating costs.

[0024] An annular groove 83 is formed on the arc-shaped side of the cleaning disc 82. A plastic film 86 is fixedly connected to the inner wall of the annular groove 83. An elastic ball 87 is set between the opposite surfaces of the annular groove 83 and the plastic film 86. The elastic ball 87 supports the plastic film 86, which is located on the outside of the cleaning disc 82. When the plastic film 86 rubs against the inner wall of the cylindrical housing 4, the plastic film 86 is subjected to the reaction force of the inner wall of the cylindrical housing 4, and the plastic film 86 squeezes the elastic ball 87. This causes the elastic ball 87 to adjust according to the pressure change inside the plastic film 86, thereby achieving self-adaptive friction. This improves the adhesion of the plastic film 86 to the inner wall of the cylindrical housing 4, further enhances the friction effect, and reduces dead angles of friction between parts. At the same time, the plastic film 86 is made of plastic, which enables it to self-adaptively scrape and clean the inner wall of the housing, removing deposited impurities without damaging the equipment. The flexible brush reduces the secondary re-entrainment of impurities, reducing the pressure of secondary contamination of the membrane fibers from the source, thereby extending the service life of the equipment.

[0025] A backwash pump pipe 11 is fixedly connected to the inner side of the support frame 1, and a plastic hose 12 is fixedly connected to the outer side of the backwash pump pipe 11. One side of the outer side of the plastic hose 12 is fixedly connected to the outer side of the first valve pipe 3. A drain pipe 13 is fixedly connected to the lower side of the outer side of the cylindrical shell 4. A fourth valve pipe 14 is fixedly connected between the drain pipe 13 and the opposite side of the cylindrical shell 4. An air duct component 9 is fixedly connected to the outer side of the cylindrical shell 4 away from the third valve pipe 10. The backwash pump pipe 11 introduces cleaning liquid into the cylindrical shell 4 through the plastic hose 12 from the first valve pipe 3. The liquid fills the membrane fibers 16 and the filter pipe 17, soaking the membrane fibers for 30 to 60 minutes to remove stubborn contaminants. During the soaking process, the cleaning component 8 adapts to the cleaning component 8, which rubs against the cylindrical shell 4 and the membrane fibers 16 to further improve cleaning efficiency and quality. After soaking, the fourth valve pipe 14 controls the liquid to flow to the drain pipe 13 to facilitate liquid discharge, which carries away impurities.

[0026] The friction tool 85 includes an annular frame 851, with a curved plate 852 fixedly connected to the inner side of the annular frame 851. An arc-shaped groove 853 is formed on the outer side of the curved plate 852 away from the annular frame 851. As the cleaning disc 82 extends and retracts with the electric push rod 81, it drives the annular frame 851 to work, causing the curved plate 852 to rub against the surface of the membrane fibers 16. When the curved plate 852 rubs against the membrane fibers 16, it drives the annular frame 851 to rotate inside the circular groove 84, thus achieving the effect of rotating the friction component. This dual-motion composite cleaning achieves complete, dead-angle-free peeling of the outer surface of the membrane fibers 16, precisely acting on the outer surface of the membrane fibers 16, and quickly restoring the filtration performance of the membrane fibers 16. The arc-shaped groove 853 on the surface of the curved plate 852 increases the texture of the component surface, further improving the friction effect and cleaning efficiency.

[0027] The second embodiment is based on the first embodiment; please refer to [link / reference]. Figures 7 to 8As shown, the air duct component 9 includes an air duct housing 901. A fan 902 is fixedly connected to one side of the air duct housing 901. A grille 903 is fixedly connected to the side of the air duct housing 901 near the fan 902. A transfer pipe 904 is fixedly connected to the side of the air duct housing 901 away from the fan 902. A middle pipe 905 is fixedly connected to the outside of the transfer pipe 904. A valve 906 is fixedly connected to the side of the middle pipe 905 away from the transfer pipe 904. The fan 902 generates airflow, which flows from the duct housing 901 to the adapter pipe 904. The adapter pipe 904 splits the airflow, which flows from the adapter pipe 904 to the middle pipe 905 and enters the cylindrical housing 4. This achieves the effect of airflow rinsing the equipment, introducing air into the equipment to dry the residual cleaning fluid and waste liquid in the flow channel. During the drying process, the evaporation of moisture in the internal components is accelerated, reducing the impact on the components, quickly dehydrating, and shortening the cleaning cycle. The middle pipe 905 adopts a structure that is wide at both ends and narrow in the middle. According to Bernoulli's principle, by reducing the diameter of the pipe, the flow speed of the airflow is increased, thereby improving the working efficiency of the components.

[0028] A partition plate 907 is fixedly connected to the pipe inside the duct housing 901, and a check valve 908 is fixedly connected to the inner wall of the duct housing 901 away from the fan 902. Airflow flows inside the duct housing 901, and the partition plate 907 separates the airflow, intercepting impurities and reducing the amount of airflow entering the cylindrical housing 4, thus reducing the difficulty of cleaning the inside of the equipment. Airflow is generated from one side of the fan 902. When the airflow impacts the check valve 908, the check valve 908 creates space to facilitate airflow. When the airflow stops, the check valve 908 closes, preventing gas leakage and ensuring the normal operation of the equipment.

[0029] The third embodiment is based on embodiments one and two; please refer to [link / reference]. Figures 9 to 10 As shown, a dryer 909 is fixedly connected to the top of the duct housing 901. A grille 910 is fixedly connected to the inner wall of the duct housing 901 near the dryer 909 pipe. A friction assembly 911 is fixedly connected to the outer side of the grille 910. Hot airflow is generated by the dryer 909 and enters the duct housing 901 towards the interior of the cylindrical housing 4, thereby drying the inner wall components of the cylindrical housing 4. This drying and protection inhibits microbial growth, fundamentally suppressing the reproduction of bacteria and algae, reducing the corrosion of the membrane fibers 16 by biological contamination, extending the service life of the membrane fibers 16, achieving deep drying, solidification and cleaning effects, preventing contamination rebound, and realizing deep drying inside the equipment. This allows residual trace contaminants to lose their adhesion medium and cannot form a stable contamination layer again. It removes moisture and prevents the formation and solidification of stubborn scale. The grille 910 acts as a barrier, preventing impurities carried by the airflow of the fan 902 from entering and avoiding blockage of the pipes.

[0030] The friction assembly 911 includes a fixed end 9111, with a connecting shaft 9115 rotatably connected to the inner wall of the fixed end 9111. A paddle 9112 is fixedly connected to one side of the connecting shaft 9115, and a friction bracket 9113 is fixedly connected to the side of the connecting shaft 9115 away from the paddle 9112. A friction colloid 9114 is rotatably connected to the side of the friction bracket 9113 near the grid cover 910. Dry airflow acts on the paddle 9112, causing the paddle 9112 to rotate the connecting shaft 9115. The connecting shaft 9115 then rotates the friction bracket 9113, causing the friction bracket 9113 to control the friction colloid 9114 to rub against the surface of the grid cover 910. This cleans impurities from the component surface, reduces impurity adhesion, maintains smooth airflow, and facilitates subsequent cleaning of deposited impurities. Furthermore, the friction colloid 9114 has a certain deformation effect, increasing adhesion during rotational friction, further improving the friction effect, and reducing wear between components, thereby extending the service life of the components.

[0031] During use, the raw water pump pipe 2 delivers raw water into the cylindrical shell 4. The raw water settles and rises inside the cylindrical shell 4, and comes into contact with the membrane fiber 16. The raw water is filtered by the membrane fiber 16. The filtered water seeps into the filter pipe 17 and flows upward to the filter pump pipe 6, which facilitates subsequent treatment. The raw water that has been treated by the membrane fiber 16 becomes concentrated water. The concentrated water enters the concentrated water pump pipe 7 from the upper side of the cylindrical shell 4, which facilitates subsequent treatment. After a long period of operation, impurities accumulate inside the cylindrical shell 4, which can easily affect the subsequent filtration effect and operating efficiency of the components. The backwash pump pipe 11 introduces cleaning liquid into the cylindrical housing 4 through the plastic hose 12 from the first valve pipe 3. The liquid fills the membrane fibers 16 and the filter pipe 17, soaking the membrane fibers for 30 to 60 minutes to remove stubborn contaminants. During the soaking process, the cleaning component 8 performs an adaptation operation, and the cleaning component 8 rubs against the cylindrical housing 4 and the membrane fibers 16 to further improve cleaning efficiency and quality. After soaking, the fourth valve pipe 14 controls the liquid to flow to the drain pipe 13 to facilitate liquid discharge. During the soaking process, the cleaning component 8 is adapted to the operation. The cleaning component 8 rubs against the inner wall of the cylindrical shell 4, thereby achieving the effect of rubbing the inner wall of the shell, reducing the accumulation of impurities, ensuring continuous operation of the equipment, preventing the impact on liquid flow, and improving the efficiency of subsequent cleaning. Secondly, the interior of the cylindrical shell 4 is dried and cleaned using a fan 902 and a dryer 909 via the air duct component 9. The fan 902 dries the interior of the cylindrical shell 4, accelerating the evaporation of moisture and preventing corrosion, thus extending the equipment's service life. Furthermore, the dryer 909 generates hot airflow, which prevents pollutant residue and microbial growth, providing reliable drying protection for long-term shutdowns. Simultaneously, the airflow washes over the membrane fibers 16, shaking off impurities and facilitating their removal.

[0032] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A membrane filtration device with self-cleaning function, characterized in that, Includes a support frame (1), a cylindrical shell (4) is fixedly connected to one side of the support frame (1), a first valve pipe (3) is fixedly connected to the bottom of the cylindrical shell (4), a raw water pump pipe (2) is fixedly connected to the side of the first valve pipe (3) away from the cylindrical shell (4), a second valve pipe (5) is fixedly connected to the top of the cylindrical shell (4), and a filter pump pipe (6) is fixedly connected to the side of the second valve pipe (5) away from the cylindrical shell (4). A third valve pipe (10) is fixedly connected to the upper side of the outer side of the cylindrical shell (4). A concentrated water pump pipe (7) is fixedly connected to the side of the third valve pipe (10) away from the cylindrical shell (4). End seals (15) are fixedly connected to the upper and lower sides of the inner wall of the cylindrical shell (4). A filter pipe (17) is fixedly connected to the middle between the opposite faces of the end seals (15). A membrane fiber (16) is fixedly connected between the opposite faces of the end seals (15). A cleaning component (8) is fixedly connected to the inner wall of the cylindrical shell (4). The cleaning component (8) includes an electric push rod (81), the outer side of which is fixedly connected to the edge of the inner wall of the cylindrical housing (4), and a cleaning disc (82) is fixedly connected to one side of the outer side of the electric push rod (81).

2. The membrane filtration device with self-cleaning function according to claim 1, characterized in that: The cleaning disc (82) has a circular slot (84) on its outside, and a friction tool (85) is rotatably connected to the inner wall of the circular slot (84).

3. A membrane filtration device with self-cleaning function according to claim 2, characterized in that: An annular groove (83) is provided on the arc-shaped side of the outer side of the cleaning disc (82). A plastic film (86) is fixedly connected to the inner wall of the annular groove (83). An elastic ball (87) is provided between the opposite surfaces of the annular groove (83) and the plastic film (86).

4. A membrane filtration device with self-cleaning function according to claim 1, characterized in that: The inner side of the support frame (1) is fixedly connected to a backwash pump pipe (11), the outer side of the backwash pump pipe (11) is fixedly connected to a plastic hose (12), one side of the plastic hose (12) is fixedly connected to the outer side of the first valve pipe (3), the lower side of the outer side of the cylindrical shell (4) is fixedly connected to a drain pipe (13), the drain pipe (13) and the opposite side of the cylindrical shell (4) are fixedly connected to a fourth valve pipe (14), and the side of the outer side of the cylindrical shell (4) away from the third valve pipe (10) is fixedly connected to a duct component (9).

5. A membrane filtration device with self-cleaning function according to claim 2, characterized in that: The friction tool (85) includes an annular frame (851), and a curved plate (852) is fixedly connected to the inner side of the annular frame (851). An arc-shaped groove (853) is provided on the outer side of the curved plate (852) away from the annular frame (851).

6. A membrane filtration device with self-cleaning function according to claim 4, characterized in that: The air duct component (9) includes an air duct housing (901), a fan (902) is fixedly connected to one side of the outside of the air duct housing (901), a grid plate (903) is fixedly connected to the outside of the air duct housing (901) near the fan (902), a transfer pipe (904) is fixedly connected to the outside of the air duct housing (901) away from the fan (902), a middle pipe (905) is fixedly connected to the outside of the transfer pipe (904), and a valve (906) is fixedly connected to the outside of the middle pipe (905) away from the transfer pipe (904).

7. A membrane filtration device with self-cleaning function according to claim 6, characterized in that: A partition plate (907) is fixedly connected to the pipe inside the duct housing (901), and a check valve (908) is fixedly connected to the side of the inner wall of the duct housing (901) away from the fan (902).

8. A membrane filtration device with self-cleaning function according to claim 7, characterized in that: A dryer (909) is fixedly connected to the top of the air duct housing (901), and a grid cover (910) is fixedly connected to the inner wall of the air duct housing (901) on the side near the dryer (909) pipe. A friction assembly (911) is fixedly connected to the outer side of the grid cover (910).

9. A membrane filtration device with self-cleaning function according to claim 8, characterized in that: The friction assembly (911) includes a fixed end (9111), a connecting shaft (9115) is rotatably connected to the inner wall of the fixed end (9111), a paddle plate (9112) is fixedly connected to one side of the connecting shaft (9115), a friction bracket (9113) is fixedly connected to the side of the connecting shaft (9115) away from the paddle plate (9112), and a friction colloid (9114) is rotatably connected to the side of the friction bracket (9113) near the grid cover (910).

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