Anti-blocking filtering device and filtering method for domestic sewage treatment

Abstract

The invention relates to the technical field of filtering equipment, and particularly discloses an anti-blocking filtering device for domestic sewage treatment, which comprises a tank body, the bottom of the tank body is fixedly connected with an inlet pipe, the right side of the tank body is fixedly inserted with a discharge pipe, and the interior of the tank body is fixedly connected with a partition plate. Mounting rings are fixedly connected to the bottom of the partition plate and the bottom of the inner side of the tank body, a filter cylinder is fixedly connected between the two mounting rings, an adsorption assembly used for adsorbing impurities on the inner side of the filter cylinder is arranged in the tank body and comprises a small pipe rotationally connected to the middle of the partition plate, and a communicating pipe is slidably inserted into the small pipe; a plurality of communicating pipes are arranged, an adsorption cover is fixedly inserted into one side, far away from the small pipe, of each communicating pipe, and a driving part for driving the small pipe to rotate is arranged above the partition plate, so that different positions of the filter cartridge can be uniformly subjected to impurity treatment through the cooperation of the structure, and the anti-blocking effect on the filter holes is improved; the waste of water resources is reduced to a certain extent.

Description

Technical Field

[0001] The present invention relates to the technical field of filtering devices, and in particular to an anti-blocking filtering device and a filtering method for domestic sewage treatment. Background Art

[0002] Domestic sewage refers to the sewage generated in residents' daily life, mainly including kitchen sewage, washing sewage, bathing sewage, etc. It is necessary to remove or reduce harmful substances in domestic sewage to meet the discharge standard or the reusable standard. When treating domestic sewage, large particulate impurities in domestic sewage need to be removed by grille treatment first, and then inorganic particles with a relatively large specific gravity such as sand grains and slag in the sewage are removed through a grit chamber. Subsequently, a filtering device can be used to filter out smaller particulate impurities in the water to achieve the separation of impurities and water.

[0003] When the filtering device is filtering, as the device is used, the filter holes will be blocked by filter residues. In the prior art, to solve this problem, a filtering device with a backwashing function can be adopted, which uses the reverse flow of water to wash the filtered impurities to solve the problem of filter residue blocking the filter holes.

[0004] For example, in the "wastewater filtering device with a backwashing structure" with the publication number of "CN220090693U", when the filter screen needs to be cleaned, water flows out from the drain port. Due to its own water flow velocity, the turbine blade will rotate at a high speed. Under the linkage of the rotating rod, the cleaning brush will rotate at a high speed outside the filter screen synchronously, further realizing the cleaning of the filter screen. This device cleans the filter screen by the rotating cleaning brush cooperating with the water flow. However, kitchen sewage often contains oil stains, which are easy to accumulate and adsorb impurities at the filter screen, resulting in difficult cleaning of the blocked filter screen. When this device performs backwashing, the water flow is prone to flow unevenly to the filter screen for flushing, resulting in uneven cleaning effect of the filter screen, thereby affecting the anti-blocking effect of the filter screen. Moreover, due to the uneven flow of the backwashing water to the filter screen, a large amount of backwashing water resources are wasted, and the traditional cleaning component is prone to block the filtering surface of the filter screen during sewage filtering, affecting the filtering efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide an anti-blocking filtering device and a filtering method for domestic sewage treatment, which can more evenly treat impurities at different positions of the filter cylinder, improve the anti-blocking effect on the filter holes, reduce the waste of water resources to a certain extent, and when filtering, the adsorption cover will not block the filtering surface of the filter screen, avoiding the adsorption cover from affecting the filtering area of the device, thereby improving the filtering efficiency of the device, so as to solve the problems proposed in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: An anti-blocking filtration device for domestic sewage treatment, including a tank body, a feed pipe is fixedly connected to the bottom of the tank body, a discharge pipe is fixedly inserted into the right side of the tank body, a partition plate is fixedly connected to the inside of the tank body, mounting rings are fixedly connected to the bottom of the partition plate and the inner bottom of the tank body, a filter cylinder is fixedly connected between the two mounting rings, an adsorption assembly for adsorbing impurities inside the filter cylinder is arranged inside the tank body, the adsorption assembly includes a small tube rotatably connected to the middle part of the partition plate, a communicating pipe is slidably inserted into the small tube, and a plurality of communicating pipes are provided. The side of the communicating pipe away from the small tube is fixedly inserted with an adsorption cover. Above the partition plate, a driving part for driving the small tube to rotate is arranged. An extrusion assembly for adjusting the position of the adsorption cover is jointly arranged inside and below the small tube. The extrusion assembly includes a lifting rod slidably connected inside the small tube. An inclined plate is fixedly connected to the outer wall of the lifting rod corresponding to the position of the communicating pipe. Both the inclined plate near the communicating pipe and the communicating pipe near the inclined plate are inclined.

[0007] Preferably, an elastic band is fixedly connected between the adsorption cover and the small tube.

[0008] Preferably, a rotary joint is installed at the top of the small tube, an adsorption pipe is fixedly inserted into the left side of the rotary joint, and valves are installed inside both the adsorption pipe and the feed pipe.

[0009] Preferably, the driving part includes a motor fixedly connected to the inner side of the top of the tank body. A gear is fixedly connected to the output shaft of the motor and the outer wall of the small tube, and the two gears are meshed with each other.

[0010] Preferably, a lifting part for moving the lifting rod up and down is arranged below the lifting rod. The bottom of the lifting rod extends out from the bottom of the small tube. The lifting part includes an L-shaped frame fixedly connected to the inner bottom of the tank body. An electric telescopic rod is fixedly connected to the inside of the left side of the L-shaped frame. The output shaft of the electric telescopic rod extends out from the L-shaped frame and is fixedly connected to a circular plate.

[0011] Preferably, a scraping assembly is jointly arranged inside and outside the adsorption cover. The scraping assembly includes a rotating rod rotatably connected inside the adsorption cover. A cleaning brush cylinder is slidably connected to the outer wall of the rotating rod inside the adsorption cover. The scraping assembly further includes an anti-slip ring fixedly connected to the inside of the mounting ring. Friction wheels are fixedly connected to the top and bottom ends of the rotating rod at corresponding positions of the anti-slip ring.

[0012] Preferably, inclined blocks are fixedly connected to the bottom of the cleaning brush cylinder in an annular array. The scraping assembly further includes a limiting rod fixedly connected to the inner bottom of the adsorption cover.

[0013] Preferably, a through groove is formed on one side of the adsorption hood in the counterclockwise rotation direction. A plugging assembly is jointly arranged inside the adsorption hood and the connecting pipe. The plugging assembly includes inclined elastic strips fixedly connected to the inside of the connecting pipe in an annular array. A flexible film is fixedly connected between the outer side of the elastic strip and the connecting pipe, and a medium capsule is fixedly connected between the outer side of the flexible film and the connecting pipe.

[0014] Preferably, the plugging assembly further includes an elastic capsule fixedly connected to the inside of the adsorption hood at the position of the through groove. A conduit is fixedly connected between the elastic capsule and the medium capsule.

[0015] The present invention also provides a clogging prevention filtration method for domestic sewage treatment, including the following steps: S1. Filtration: Sewage enters the inner side of the filter cylinder for filtration and is discharged from the discharge pipe. S2. Impurity removal: The adsorption hood fits against the inner side of the filter cylinder and performs adsorption to achieve the removal of impurities.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. Through the action of the adsorption assembly, it is possible to more evenly treat impurities at different positions of the filter cylinder, improve the effect of preventing clogging of the filter holes, and reduce the waste of water resources to a certain extent. 2. Through the action of the extrusion assembly, when filtering, the adsorption hood does not block the filtering surface of the filter screen, avoiding the adsorption hood from affecting the filtering area of the device, thereby improving the filtering efficiency of the device. And when cleaning impurities, the adsorption hood fits against the inner side of the filter cylinder, and most of the water enters from the outer side of the filter cylinder to wash the filter holes of the filter cylinder, further improving the effect of removing impurities, and thus improving the effect of preventing clogging of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a view of the overall structure of the present invention; Figure 2 It is a schematic semi-sectional structure diagram of the present invention; Figure 3 It is a partial structure diagram of the scraping assembly of the present invention; Figure 4 It is a partial structure diagram of the extrusion assembly of the present invention; Figure 5It is a schematic diagram of a half-section structure of the filter cartridge of the present invention; Figure 6 It is a front cross-sectional structural schematic diagram of the adsorption cover of the present invention; Figure 7 For the present invention Figure 6 Schematic diagram of the structure viewed from above; Figure 8 It is a schematic diagram of the partial cross-sectional structure of the connecting pipe of the present invention.

[0019] Description of reference numerals: 1. Tank body; 2. Inlet pipe; 3. Discharge pipe; 4. Partition plate; 5. Mounting ring; 6. Adsorption assembly; 61. Small tube; 62. Connecting pipe; 63. Adsorption cover; 64. Driving unit; 641. Motor; 642. Gear; 65. Through slot; 7. Extrusion assembly; 71. Lifting rod; 72. Inclined plate; 73. Lifting unit; 731. L-shaped frame; 732. Electric telescopic rod; 733. Round plate; 8. Scraping assembly; 81. Rotating rod; 82. Cleaning brush cylinder; 83. Anti-skid ring; 84. Friction wheel; 85. Inclined block; 86. Limit rod; 9. Blocking assembly; 91. Elastic strip; 92. Flexible membrane; 93. Medium capsule; 94. Elastic capsule; 95. Catheter; 10. Filter cartridge; 11. Elastic belt; 12. Rotary joint; 13. Adsorption tube; 14. Valve. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figures 1 to 6, the present invention provides a technical solution: a clogging prevention filtration device for domestic sewage treatment, including a tank body 1, a feed pipe 2 is fixedly connected to the bottom of the tank body 1, a discharge pipe 3 is fixedly inserted into the right side of the tank body 1, a partition plate 4 is fixedly connected to the inside of the tank body 1, mounting rings 5 are fixedly connected to the bottom of the partition plate 4 and the inner bottom of the tank body 1 respectively, a filter cartridge 10 is fixedly connected between the two mounting rings 5, an adsorption assembly 6 for adsorbing impurities inside the filter cartridge 10 is arranged inside the tank body 1, the adsorption assembly 6 includes a small pipe 61 rotatably connected to the middle part of the partition plate 4, a communicating pipe 62 is slidably inserted into the inside of the small pipe 61, and a plurality of communicating pipes 62 are provided. An adsorption hood 63 is fixedly inserted on the side of the communicating pipe 62 away from the small pipe 61. Above the partition plate 4, a driving part 64 for driving the small pipe 61 to rotate is provided. The driving part 64 includes a motor 641 fixedly connected to the inner top of the tank body 1. Gear 642 is fixedly connected to the output shaft of the motor 641 and the outer wall of the small pipe 61 respectively. The two gears 642 are meshed with each other. A rotary joint 12 is installed at the top of the small pipe 61. An adsorption pipe 13 is fixedly inserted on the left side of the rotary joint 12. Valves 14 are installed inside both the adsorption pipe 13 and the feed pipe 2. The valve 14 can adopt an electromagnetic valve, and its principle and installation are mature existing technologies, so no more details will be described. The filter cartridge 10 is made of rigid material and is provided with a plurality of filter holes. The rotary joint 12 is a mature existing technology, so no more details will be described. It can ensure the connection between the adsorption pipe 13 and the small pipe 61 without affecting the rotation of the small pipe 61.

[0022] By adopting the above technical solution, during filtration, the valve 14 in the feed pipe 2 is opened, and the valve 14 in the adsorption pipe 13 is closed. Sewage containing fine impurities enters the tank body 1 from the feed pipe 2 and is located inside the filter cartridge 10. The sewage entering the inside of the filter cartridge 10 passes through the filter holes opened in the filter cartridge 10, while the impurities remain inside the filter cartridge 10. The filtered water enters the part outside the filter cartridge 10 inside the tank body 1 and is discharged from the discharge pipe 3.

[0023] After filtering for a period of time, the filter holes of the filter cartridge 10 will be somewhat clogged. At this time, the valve 14 in the feed pipe 2 is closed, and the valve 14 in the adsorption pipe 13 is opened. A suction pump is installed on the left side of the adsorption pipe 13. At this time, the suction pump is turned on, so that the water flow inside the tank body 1 flows towards the adsorption hood 63, and then enters the inside of the communicating pipe 62 and the small pipe 61 in sequence, and then is discharged from the adsorption pipe 13.

[0024] It should be noted that a pipe is connected to the discharge pipe 3 away from the tank body 1, and the other end of the pipe is connected to a container for collecting the filtered water. The installation position of the container for collecting the filtered water is above the tank body 1 to ensure that the inside of the tank body 1 is filled with water during impurity treatment and filtration. A water pump is installed at the bottom of the feed pipe 2 to facilitate the feeding of sewage into the inside of the tank body 1.

[0025] When impurities adhering to the filter holes need to be processed and the suction pump is in operation, the suction hood 63 sucks water from the inside of the tank body 1. At this time, since the side of the suction hood 63 close to the filter cartridge 10 fits against the filter cartridge 10, when the suction hood 63 sucks water, the water outside the filter cartridge 10 can flow into the inside of the filter cartridge 10 and the suction hood 63, realizing the flushing of the filter cartridge 10, and the impurities enter the connecting pipe 62 and the small pipe 61 along with the sucked water and are discharged from the suction pipe 13.

[0026] Moreover, it rotates through the output shaft of the motor 641, causing the gear 642 connected to the output shaft of the motor 641 to rotate. Under the meshing action of the two gears 642, the small pipe 61 is controlled to rotate counterclockwise, causing the plurality of suction hoods 63 and the connecting pipe 62 to also rotate counterclockwise, so that the suction hood 63 rotates to different positions to perform negative pressure adsorption flushing on the impurities. Such a design enables the impurities at different positions of the filter cartridge 10 to be processed more evenly, improving the effect of preventing blockage of the filter holes and reducing the waste of water resources to a certain extent.

[0027] The design of the through groove 65 enables the corresponding part of the impurities to enter the inside of the suction hood 63 when the suction hood 63 rotates.

[0028] Specifically, as Figures 1 to 6 shown, an extrusion assembly 7 for adjusting the position of the suction hood 63 is jointly arranged inside and below the small pipe 61. The extrusion assembly 7 includes a lifting rod 71 slidably connected inside the small pipe 61. An inclined plate 72 is fixedly connected to the outer wall of the lifting rod 71 corresponding to the position of the connecting pipe 62. Both the inclined plate 72 near the connecting pipe 62 and the connecting pipe 62 near the inclined plate 72 are inclined. A elastic band 11 is fixedly connected between the suction hood 63 and the small pipe 61. A lifting part 73 for moving the lifting rod 71 up and down is arranged below the lifting rod 71. The bottom of the lifting rod 71 extends out from the bottom of the small pipe 61. The lifting part 73 includes an L-shaped frame 731 fixedly connected to the inner bottom of the tank body 1. An electric telescopic rod 732 is fixedly connected to the inside of the left side of the L-shaped frame 731. The output shaft of the electric telescopic rod 732 extends out from the L-shaped frame 731 and is fixedly connected with a circular plate 733.

[0029] By adopting the above technical solution, during filtration, the output shaft of the electric telescopic rod 732 is in a contracted state. At this time, under the action of the elastic force of the elastic band 11 itself, the suction hood 63 is far away from the filter cartridge 10. At this time, the suction hood 63 does not block the filtering surface of the filter screen, avoiding the suction hood 63 from affecting the filtering area of the device, thereby improving the filtering efficiency of the device.

[0030] When cleaning impurities, the output shaft of the electric telescopic rod 732 extends, causing the circular plate 733 to move upward. At this time, the circular plate 733 squeezes the bottom of the lifting rod 71, causing the lifting rod 71 to drive the inclined plate 72 upward. Since the positions of the multiple inclined plates 72 correspond to the communicating pipes 62, the multiple inclined plates 72 squeeze the corresponding communicating pipes 62 upward, causing the communicating pipes 62 to drive the adsorption hood 63 to move toward the filter cylinder 10, so that the adsorption hood 63 fits against the inner side of the filter cylinder 10. When the adsorption hood 63 adsorbs, most of the water enters from the outside of the filter cylinder 10 to wash the filter holes of the filter cylinder 10, further improving the effect of removing impurities and thus enhancing the anti-clogging effect of the filter screen.

[0031] An O-ring seal is installed at the connection between the L-shaped frame 731 and the output shaft of the electric telescopic rod 732 to prevent water from entering the electric telescopic rod 732.

[0032] It should be noted that a ball is rotatably connected to the bottom of the lifting rod 71 to reduce the friction between the lifting rod 71 and the circular plate 733 during movement.

[0033] Specifically, as Figures 2 to 7 shown, a scraping component 8 is jointly arranged inside and outside the adsorption hood 63. The scraping component 8 includes a rotating rod 81 rotatably connected inside the adsorption hood 63. A cleaning brush barrel 82 is slidably connected to the outer wall of the rotating rod 81 inside the adsorption hood 63. The scraping component 8 further includes an anti-slip ring 83 fixedly connected to the inside of the mounting ring 5. Friction wheels 84 are fixedly connected to the top and bottom ends of the rotating rod 81 at corresponding positions of the anti-slip ring 83.

[0034] By adopting the above technical solution, when cleaning impurities, the communicating pipe 62 drives the adsorption hood 63 to move toward the filter cylinder 10, causing the friction wheel 84 to approach the anti-slip ring 83 and squeeze the anti-slip ring 83, resulting in a large normal pressure between the friction wheel 84 and the anti-slip ring 83, and thus a large frictional force between them during movement.

[0035] When the small pipe 61 rotates, the communicating pipe 62 drives the adsorption hood 63 to rotate, causing the rotating rod 81 and the friction wheel 84 to rotate. Under the action of the frictional force between the friction wheel 84 and the anti-slip ring 83, the rotating rod 81 can drive the cleaning brush barrel 82 to rotate around the axis of the rotating rod 81, and the rotating direction is opposite to the rotating direction of the small pipe 61. Thus, the cleaning brush barrel 82 brushes the filter cylinder 10 in the direction opposite to the rotating direction of the adsorption hood 63, further improving the effect of removing impurities and thus further enhancing the anti-clogging effect of the device.

[0036] The anti-slip ring 83 is made of corrosion-resistant silicone material and has strong anti-slip performance. The rotating rod 81 is made of a material with strong rigidity, and the circumferential side of the friction wheel 84 is rough.

[0037] Specifically, asFigures 2 to 7 As shown in the figure, the bottom of the cleaning brush barrel 82 is fixedly connected with inclined blocks 85 in an annular array, and the scraping assembly 8 further includes a limiting rod 86 fixedly connected to the inner bottom of the adsorption cover 63.

[0038] By adopting the above technical solution, the bottom of the inclined block 85 is inclined, and a ball for reducing movement friction is rotatably connected to the top of the limiting rod 86.

[0039] Magnets are fixedly connected to both the bottom of the cleaning brush barrel 82 and the corresponding position of the rotating rod 81 at the bottom of the cleaning brush barrel 82. In the initial state, under the action of magnetic adsorption, the two magnets are in a state of approaching each other. As the rotating rod 81 drives the cleaning brush barrel 82 to rotate, when the inclined block 85 rotates close to the limiting rod 86, under the inclination of the bottom of the inclined block 85 and the limiting action of the limiting rod 86, the cleaning brush barrel 82 can move upward. When the inclined block 85 rotates away from the limiting rod 86, under the action of the magnetic force of the magnet, the cleaning brush barrel 82 resets. Such a design enables the cleaning brush barrel 82 to vibrate up and down during cleaning.

[0040] The design of the cleaning brush barrel 82 vibrating up and down can, on the one hand, provide cleaning in the up and down directions when the cleaning brush barrel 82 cleans the filter cartridge 10, further improving the cleaning effect.

[0041] On the other hand, when the cleaning brush barrel 82 vibrates up and down, the bristles installed on it continuously contact the water. Under the resistance of the water, it is beneficial to shake out the impurities adhered to the bristles, thereby reducing the excessive accumulation of impurities on the bristles and affecting the subsequent cleaning effect.

[0042] It should be noted that the height positions between adjacent cleaning brush barrels 82 overlap.

[0043] It should be noted that the friction between the friction wheel 84 and the anti-slip ring 83 is greater than the resistance of the movement of the cleaning brush barrel 82.

[0044] Embodiment 2: The technical solution of this embodiment is different from that of Embodiment 1 in that: as Figures 2 to 4 and Figures 6 to 8 shown, a plugging assembly 9 is jointly arranged inside the adsorption cover 63 and the communication pipe 62. The plugging assembly 9 includes inclined elastic strips 91 fixedly connected to the inside of the communication pipe 62 in an annular array. A flexible membrane 92 is fixedly connected between the outer side of the elastic strip 91 and the communication pipe 62. A medium bag 93 is fixedly connected between the outer side of the flexible membrane 92 and the communication pipe 62. The plugging assembly 9 further includes an elastic bag 94 fixedly connected to the inside of the adsorption cover 63 at the through groove 65. A conduit 95 is fixedly connected between the elastic bag 94 and the medium bag 93. Both the medium bag 93 and the elastic bag 94 are made of corrosion-resistant materials.

[0045] By adopting the above technical solution, during filtration, since the suction pump is not started, the opening of the flexible membrane 92 away from the communicating pipe 62 is small, the water in the communicating pipe 62 does not flow, and under the action of its own elasticity of the elastic bladder 94, the elastic bladder 94 does not block the through groove 65, ensuring that impurities can enter the interior of the adsorption cover 63. When cleaning, the suction pump is started, causing the liquid in the communicating pipe 62 to flow. Under the pressure of the liquid flow, the opening of the flexible membrane 92 away from the communicating pipe 62 gradually becomes larger. At this time, the elastic strip 91 squeezes the medium bladder 93, causing the medium in the medium bladder 93 to enter the elastic bladder 94, making the elastic bladder 94 expand to block the through groove 65, further improving the fitting effect between the adsorption cover 63 and the filter cartridge 10. When the adsorption cover 63 adsorbs, most of the water enters from the outside of the filter cartridge 10 to wash the filter holes of the filter cartridge 10, further improving the effect of removing impurities.

[0046] It should be noted that the suction pump sucks intermittently. When the adsorption cover 63 rotates to a certain position, the motor 641 stops rotating first, and then the suction pump sucks to remove impurities.

[0047] It should be noted that the arc length of the rotation of the adsorption cover 63 between adjacent suctions is less than the arc length of the side of the adsorption cover 63 close to the filter cartridge 10.

[0048] The embodiment of the present invention also provides a clogging prevention filtration method for domestic sewage treatment, including the following steps: S1. Filtration: Open the valve 14 in the inlet pipe 2 and close the valve 14 in the adsorption pipe 13. The sewage containing fine impurities enters the tank body 1 from the inlet pipe 2 and is located inside the filter cartridge 10. The sewage entering the interior of the filter cartridge 10 passes through the filter holes opened in the filter cartridge 10, while the impurities remain inside the filter cartridge 10. The filtered water enters the part of the interior of the tank body 1 located outside the filter cartridge 10 and is discharged from the discharge pipe 3. S2. Impurity removal: Close the valve 14 in the inlet pipe 2 and open the valve 14 in the adsorption pipe 13. A suction pump is installed on the left side of the adsorption pipe 13. At this time, turn on the suction pump, causing the water flow inside the tank body 1 to flow towards the adsorption cover 63, and sequentially enter the interior of the communicating pipe 62 and the small pipe 61, and then be discharged from the adsorption pipe 13.

[0049] Working principle: While removing impurities, control the small pipe 61 to rotate counterclockwise, so that the plurality of adsorption covers 63 and the communicating pipes 62 also rotate counterclockwise, so that the adsorption cover 63 rotates to different positions to perform negative pressure adsorption and flushing on the impurities. Such a design enables the impurities at different positions of the filter cartridge 10 to be processed more evenly.

[0050] When filtering, the output shaft of the electric telescopic rod 732 is in a contracted state. At this time, under the elastic force of the elastic band 11 itself, the adsorption cover 63 is far away from the filter cartridge 10. At this time, the adsorption cover 63 does not block the filtering surface of the filter screen, avoiding the adsorption cover 63 from affecting the filtering area of the device, thereby improving the filtering efficiency of the device. When cleaning impurities, the output shaft of the electric telescopic rod 732 extends, causing the circular plate 733 to move upward. At this time, the circular plate 733 squeezes the bottom of the lifting rod 71, causing the lifting rod 71 to drive the inclined plate 72 to move upward. Since the positions of the multiple inclined plates 72 correspond to the communicating pipes 62, the multiple inclined plates 72 squeeze the corresponding communicating pipes 62 upward, causing the communicating pipes 62 to drive the adsorption cover 63 to move towards the filter cartridge 10, realizing that the adsorption cover 63 fits the inner side of the filter cartridge 10. When the adsorption cover 63 adsorbs, most of the water enters from the outside of the filter cartridge 10 to wash the filter holes of the filter cartridge 10.

[0051] Under the frictional force between the friction wheel 84 and the anti-slip ring 83, the rotating rod 81 can drive the cleaning brush barrel 82 to rotate around the axis of the rotating rod 81, and the rotating direction is opposite to the rotating direction of the small tube 61. Thus, the cleaning brush barrel 82 brushes the filter cartridge 10 along the direction opposite to the rotating direction of the adsorption cover 63. When the inclined block 85 rotates close to the limiting rod 86, under the inclination of the bottom of the inclined block 85 and the limiting action of the limiting rod 86, the cleaning brush barrel 82 can move upward. When the inclined block 85 rotates away from the limiting rod 86, under the magnetic force of the magnetic block, the cleaning brush barrel 82 resets. Such a design enables the cleaning brush barrel 82 to vibrate up and down during cleaning, facilitating the shaking off of impurities adhered to the bristles, thereby reducing the excessive accumulation of impurities on the bristles and affecting the subsequent cleaning effect.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An anti-blocking filtration device for domestic sewage treatment, comprising a tank body (1), characterized in that: A feed pipe (2) is fixedly connected to the bottom of the tank body (1), a discharge pipe (3) is fixedly inserted into the right side of the tank body (1), a partition plate (4) is fixedly connected to the inside of the tank body (1), mounting rings (5) are fixedly connected to the bottom of the partition plate (4) and the inner bottom of the tank body (1), and a filter cartridge (10) is fixedly connected between the two mounting rings (5); An adsorption assembly (6) for adsorbing impurities inside the filter cartridge (10) is arranged inside the tank body (1). The adsorption assembly (6) includes a small pipe (61) rotatably connected to the middle part of the partition plate (4). A communicating pipe (62) is slidably inserted into the small pipe (61), and a plurality of communicating pipes (62) are provided. An adsorption hood (63) is fixedly inserted into one side of the communicating pipe (62) away from the small pipe (61). A driving part (64) for driving the small pipe (61) to rotate is arranged above the partition plate (4); An extrusion assembly (7) for adjusting the position of the adsorption hood (63) is jointly arranged inside and below the small pipe (61). The extrusion assembly (7) includes a lifting rod (71) slidably connected to the inside of the small pipe (61). An inclined plate (72) is fixedly connected to the outer wall of the lifting rod (71) corresponding to the position of the communicating pipe (62). Both the inclined plate (72) near the communicating pipe (62) and the communicating pipe (62) near the inclined plate (72) are inclined; 2. The anti-clogging filtration device for domestic sewage treatment according to claim 1, characterized in that: An elastic band (11) is fixedly connected between the adsorption hood (63) and the small pipe (61); 3. The anti-clogging filtration device for domestic sewage treatment according to claim 1, characterized in that: A rotary joint (12) is installed at the top of the small pipe (61). An adsorption pipe (13) is fixedly inserted into the left side of the rotary joint (12). Valves (14) are installed inside both the adsorption pipe (13) and the feed pipe (2); 4. The anti-clogging filtration device for domestic sewage treatment according to claim 1, characterized in that: The driving part (64) includes a motor (641) fixedly connected to the inner side of the top of the tank body (1). Gears (642) are fixedly connected to the output shaft of the motor (641) and the outer wall of the small pipe (61). The two gears (642) are meshed with each other; 5. The anti-clogging filtration device for domestic sewage treatment according to claim 1, characterized in that: A lifting part (73) for moving the lifting rod (71) up and down is arranged below the lifting rod (71). The bottom of the lifting rod (71) extends out of the bottom of the small pipe (61). The lifting part (73) includes an L-shaped frame (731) fixedly connected to the inner bottom of the tank body (1). An electric telescopic rod (732) is fixedly connected to the inside of the left side of the L-shaped frame (731). The output shaft of the electric telescopic rod (732) extends out of the L-shaped frame (731) and is fixedly connected to a circular plate (733); 6. The anti-clogging filtration device for domestic sewage treatment according to claim 1, wherein: A scraping assembly (8) is jointly arranged inside and outside the adsorption hood (63). The scraping assembly (8) includes a rotating rod (81) rotatably connected to the inside of the adsorption hood (63). A cleaning brush barrel (82) is slidably connected to the outer wall of the rotating rod (81) inside the adsorption hood (63). The scraping assembly (8) further includes an anti-slip ring (83) fixedly connected to the inside of the mounting ring (5). Friction wheels (84) are fixedly connected to the top and bottom ends of the rotating rod (81) at corresponding positions of the anti-slip ring (83); 7. The anti-clogging filtration device for domestic sewage treatment according to claim 6, characterized in that: The bottom of the cleaning brush barrel (82) is fixedly connected with inclined blocks (85) in an annular array, and the scraping assembly (8) further includes a limiting rod (86) fixedly connected to the inner bottom of the adsorption cover (63).

8. The anti-clogging filtration device for domestic sewage treatment according to claim 1, wherein: A through groove (65) is formed in one side of the adsorption cover (63) in the counterclockwise rotation direction. A blocking assembly (9) is jointly arranged inside the adsorption cover (63) and the connecting pipe (62). The blocking assembly (9) includes inclined elastic strips (91) fixedly connected to the inside of the connecting pipe (62) in an annular array. A flexible film (92) is fixedly connected between the outer side of the elastic strip (91) and the connecting pipe (62), and a medium bag (93) is fixedly connected between the outer side of the flexible film (92) and the connecting pipe (62).

9. The anti-clogging filtration device for domestic sewage treatment according to claim 8, wherein: The blocking assembly (9) further includes an elastic bag (94) fixedly connected to the inside of the adsorption cover (63) at the through groove (65). A conduit (95) is fixedly connected between the elastic bag (94) and the medium bag (93).

10. A clogging prevention filtering method for domestic sewage treatment, characterized in that: This method is applicable to the anti-blocking filtering device for domestic sewage treatment according to any one of claims 1-9, and includes the following steps: S1. Filtration: Sewage enters the inside of the filter cylinder (10) for filtration and is discharged from the discharge pipe (3). S2. Impurity removal: The adsorption cover (63) fits against the inner side of the filter cylinder (10) and adsorbs to remove impurities.

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