Multi-medium sewage treatment filter with operation condition adjusting function

Abstract

The invention discloses a multi-medium sewage treatment filter with an operation condition adjusting function, and relates to the technical field of sewage filters, the multi-medium sewage treatment filter comprises a filtering tank, the outer surface of the upper end of the filtering tank is fixedly connected with a top maintenance port, and middle maintenance ports are formed in the positions, close to the middle and the bottom, of the outer surface of the filtering tank; a liquid inlet assembly is arranged on the outer surface of the filtering tank close to the top end; according to the invention, the distance between the filter plate I and the filter plate II is automatically adjusted according to different operation conditions of the filter tank, and when the filter tank is backwashed, the storage space of a medium can be expanded by increasing the distance between the filter plate I and the filter plate II, so that a certain moving space is provided for the medium and impurities, and the service life of the filter tank is prolonged. The medium can move in a small range and collide with the adjacent medium, so that the medium and the impurities can be fully rubbed in the flushing process, and the situation that the impurities on the surface of the medium cannot be separated is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of sewage filters, and in particular to a multi-media sewage treatment filter with an operating condition adjustment function. Background Art

[0002] Multi-media filters are an important part of the water treatment system. There are various impurities and pollutants in the groundwater. No matter what water purification equipment is installed, multi-media filters are required as pre-treatment equipment for raw water to ensure that the water quality of the water purification equipment is qualified.

[0003] In the process of sewage treatment using a multi-media filter, multiple media are usually set up in layers, and the impurities in the sewage are removed and adsorbed by the media. In addition, in order to ensure the filtering effect of the media, the media will be backwashed regularly to separate the impurities on the surface of the media from the media. The media storage space of traditional multi-media filters is usually not adjustable. Although this setting improves the filtering effect, it cannot provide sufficient friction space between the media and the impurities during the backwashing process, which increases the difficulty of separating the impurities on the surface of the media; In addition, traditional multi-media filters usually only filter sewage through the medium and are unable to preliminarily screen out large particles of impurities in the sewage, which can easily cause the water inlet pipe to be blocked during a long period of diversion. Large particles of impurities attached to the surface of the filter plate will also cause blockage of its filter holes, affecting the circulation rate of the sewage and thus affecting the filtering effect. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-media sewage treatment filter with an operating condition adjustment function to solve the technical defects proposed by the background technology.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a multi-media sewage treatment filter with an operating condition adjustment function, comprising a filter tank, the upper end outer surface of the filter tank is fixedly connected with a top maintenance port, the outer surface of the filter tank is provided with a middle maintenance port near the middle and the bottom, the outer surface of the filter tank is provided with a liquid inlet component near the top, and the liquid inlet component penetrates into the interior of the filter tank; The outer surface of the lower end of the filter tank is fixedly connected with a water outlet pipe and a backwash water inlet pipe controlled by a control valve, and three groups of filter elements for storing media are arranged at equal distances in the upper and lower parts of the filter tank, and an adjustment mechanism for adjusting the volume of the filter element is arranged between the three groups of filter elements and the filter tank; The filter element includes a filter plate 1 fixedly connected to the filter tank and a filter plate 2 movably connected to the filter tank, and the filter plate 1 is located above the corresponding filter plate 2, and a guide component for limiting the movement of the filter plate 2 is arranged between the filter plate 1 and the filter plate 2.

[0006] Furthermore, the liquid inlet assembly includes an inlet pipe for introducing sewage into the filter tank, and one end of the liquid inlet pipe is fixedly connected to a guide pipe, one end of the guide pipe penetrates into the interior of the filter tank and is fixedly connected to the filter tank, the end of the guide pipe away from the liquid inlet pipe is closed, and a plurality of groups of nozzles are fixedly connected at equal distances on the outer surface of the guide pipe.

[0007] Furthermore, an angle of 135 degrees is formed between the guide tube and the liquid inlet tube, and one end of the guide tube away from the liquid inlet tube is located on the upper side of the liquid inlet tube, a connecting tube is fixedly connected to the connection between the bottom end of the outer surface of the liquid inlet tube and the guide tube, and the connecting tube is communicated with the liquid inlet tube, the outer surface of the liquid inlet tube is detachably sealed and connected to a movable cylinder, and a motor is provided on the outer surface of the bottom end of the movable cylinder, the output end of the motor passes through the interior of the movable cylinder and is fixedly connected to a rotating column, and the outer surface of the rotating column is fixedly connected to a plurality of groups of fixed columns, and the outer surface of the fixed column is fixedly connected to bristles.

[0008] Furthermore, the adjustment mechanism includes a fixed cylinder fixedly connected to the top of the inner surface of the filter tank, and an electric push rod is arranged inside the fixed cylinder, and one end of the electric push rod is fixedly connected to the fixed cylinder and the other end is fixedly connected to a limiting block, a movable rod is fixedly connected to the outer surface of the lower end of the limiting block, and the movable rod is threadedly connected to the fixed cylinder, the bottom end of the movable rod crosses and passes through three groups of filter plates one and three groups of filter plates two in sequence, and the movable rod is movably connected to filter plate one, and the movable rod is rotatably connected to filter plate two.

[0009] Furthermore, a connecting plate is fixedly connected to the outer surface of the movable rod at a position between filter plate one and filter plate two, and movable grooves are provided on the outer surfaces of the upper and lower ends of the connecting plate near the two sides, and a spring and a guide column are provided inside the movable groove, one end of the spring is fixedly connected to the movable groove, and the other end is fixedly connected to the guide column, the guide column is movably connected to the movable groove, scrapers are provided on the upper and lower sides of the connecting plate, and one end of the guide column passes through the outside of the movable groove and is fixedly connected to the scraper.

[0010] Furthermore, the guide assembly includes a limit plate 1 fixedly connected to the filter plate 2, each group of the filter plate 2 corresponds to two groups of limit plates 1, and the two groups of limit plates 1 are symmetrically distributed with the central axis of the filter plate 2 as the symmetry axis, the lower end outer surface of the filter plate 1 is fixedly connected to the limit plate 2 at a position corresponding to the filter plate 2, and a movable hole is provided on the upper end outer surface of the limit plate 1, one end of the limit plate 2 passes through the movable hole and is movably connected to it, and one side outer surface of the limit plate 2 is inclined to one side with the top outer surface of one end of the limit plate.

[0011] Furthermore, a wastewater hole is provided on one side of the inner surface of the filter tank at a position above each group of filter plates, and a wastewater pipe is provided on the outer side of the filter tank at a position corresponding to the wastewater hole. The wastewater pipe is fixedly connected and communicated with the wastewater hole, and a drain pipe for discharging wastewater is provided on the outer surface of the lower end of the filter tank.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In the present invention, by setting an adjustment mechanism, the distance between the filter plate 1 and the filter plate 2 can be automatically adjusted according to the different operating conditions of the filter tank. When the filter tank is backwashed, by increasing the distance between the filter plate 1 and the filter plate 2, the storage space of the medium can be expanded, providing a certain moving space for the medium and impurities. The medium can move in a small range and collide with the adjacent medium, so that the medium and the impurities can be fully rubbed during the flushing process, avoiding the situation that the impurities on the surface of the medium cannot be separated; In addition, when the movable rod adjusts the distance between the filter plate 1 and the filter plate 2, it can also drive the scraper to clean the impurities with strong adhesion on the surfaces of the filter plate 1 and the filter plate 2, thereby further enhancing the backwashing effect.

[0013] 2. In the present invention, an inclined angle is formed between the liquid inlet pipe and the guide pipe, and the vortex effect is used at the connection between the liquid inlet pipe and the guide pipe to collect solid impurities with larger mass and particle size inside the movable cylinder, and a brush is used to adhere to the solid impurities, so as to perform preliminary filtration on the sewage, thereby avoiding the solid impurities from accumulating inside the liquid inlet pipe and the guide pipe and causing blockage during the long-term filtration process, thereby ensuring the smooth flow of sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 A combined view of the filter element and the guide assembly of the present invention; Figure 3 A combined view of a scraper and a connecting plate of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the scraper and the movable rod of the present invention; Figure 5 It is a structural schematic diagram of the guide assembly of the present invention; Figure 6 It is a combined view of the liquid inlet pipe and the flow guide pipe of the present invention; Figure 7 It is a schematic structural diagram of the liquid inlet component of the present invention.

[0015] 1. Filter tank; 2. Top maintenance port; 3. Middle maintenance port; 4. Liquid inlet assembly; 401. Liquid inlet pipe; 402. Guide pipe; 403. Nozzle; 404. Connecting pipe; 405. Movable cylinder; 406. Motor; 407. Rotating column; 408. Fixed column; 409. Brush; 5. Water outlet pipe; 6. Backwash water inlet pipe; 7. Filter element; 701. Filter plate one; 702. Filter plate two; 8. Adjusting mechanism; 801. Fixed cylinder; 802. Electric push rod; 803. Limit block; 804. Movable rod; 9. Guide assembly; 901. Limit plate one; 902. Limit plate two; 903. Movable hole; 10. Connecting plate; 11. Scraper; 12. Movable groove; 13. Spring; 14. Guide column; 15. Wastewater hole; 16. Wastewater pipe. DETAILED DESCRIPTION

[0016] 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.

[0017] Embodiment 1: Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, the multi-media sewage treatment filter with operating condition adjustment function proposed by the present invention includes a filter tank 1, a top maintenance port 2 is fixedly connected to the upper outer surface of the filter tank 1, a middle maintenance port 3 is provided near the middle and the bottom of the outer surface of the filter tank 1, and a liquid inlet component 4 is provided near the top of the outer surface of the filter tank 1, and the liquid inlet component 4 penetrates into the interior of the filter tank 1.

[0018] Three groups of filter elements 7 for storing media are arranged at equal distances in the upper and lower parts of the filter tank 1. Quartz sand is arranged in the upper and lower groups of filter elements 7. Manganese sand material is arranged in the middle filter element 7. An adjustment mechanism 8 for adjusting the volume of the filter element 7 is arranged between the three groups of filter elements 7 and the filter tank 1. The filter element 7 includes a filter plate 1 701 fixedly connected to the filter tank 1 and a filter plate 2 702 movably connected to the filter tank 1, and the filter plate 1 701 is located above the corresponding filter plate 2 702, and the outer surface of the lower end of the filter tank 1 is fixedly connected to a water outlet pipe 5 controlled by a control valve.

[0019] The liquid inlet assembly 4 includes a liquid inlet pipe 401 for introducing sewage into the filter tank 1. During filtering, the sewage is passed into the filter tank 1 through the liquid inlet pipe 401, and one end of the liquid inlet pipe 401 is fixedly connected to a guide pipe 402, one end of the guide pipe 402 passes through the filter tank 1 and is fixedly connected to the filter tank 1, one end of the guide pipe 402 is closed away from the liquid inlet pipe 401, and a plurality of groups of nozzles 403 are fixedly connected at equal distances on the outer surface of the guide pipe 402.

[0020] A connecting pipe 404 is fixedly connected to the connection between the bottom end of the outer surface of the liquid inlet pipe 401 and the guide pipe 402, and the connecting pipe 404 is in communication with the liquid inlet pipe 401. A movable cylinder 405 is detachably sealed and connected to the outer surface of the liquid inlet pipe 401. A motor 406 is arranged on the outer surface of the bottom end of the movable cylinder 405. The output end of the motor 406 penetrates into the interior of the movable cylinder 405 and is fixedly connected to a rotating column 407. The motor 406 drives the rotating column 407 to rotate, and a vortex effect is formed at the center of the movable cylinder 405 during the rotation of the rotating column 407. Therefore, when the sewage passes through the movable cylinder 405 and flows to the guide pipe 402, the solid impurities in the sewage gather toward the center of the movable cylinder 405 under the action of the vortex effect. The outer surface of the rotating column 407 is fixedly connected with a plurality of fixed columns 408, and the outer surface of the fixed column 408 is fixedly connected with bristles 409. Some solid impurities are entangled on the surface of the bristles 409, so that the solid impurities are easily collected, and the movable cylinder 405 can be regularly disassembled to clean the inside thereof. An angle of 135 degrees is formed between the guide pipe 402 and the liquid inlet pipe 401, and the end of the guide pipe 402 away from the liquid inlet pipe 401 is located on the upper side of the liquid inlet pipe 401, which can extend the time that material impurities in the sewage stay in the area corresponding to the movable cylinder 405, and avoid solid impurities gathering inside the liquid inlet pipe 401 and the guide pipe 402 to cause blockage during long-term filtration. At the same time, the inclined setting of the guide pipe 402 can make the sewage evenly sprayed inside the filter tank 1.

[0021] Embodiment 2: Figure 1 and Figure 2 As shown, the difference between this embodiment and embodiment 1 is that a backwash water inlet pipe 6 controlled by a control valve is fixedly connected to the outer surface of the lower end of the filter tank 1, and a waste water hole 15 is opened on one side of the inner surface of the filter tank 1 above each group of filter plates 701, and the control valve corresponding to the outlet pipe 5 is closed, and pure water is introduced into the interior of the filter tank 1 through the backwash water inlet pipe 6, and the pure water is sprayed toward the three groups of media through the backwash water inlet pipe 6 to backwash the three groups of media; A wastewater pipe 16 is provided on the outside of the filter tank 1 at a position corresponding to the wastewater hole 15. The wastewater pipe 16 is fixedly connected and communicated with the wastewater hole 15. Under the flushing of pure water, the medium and impurities rub against each other, and the impurities on the surface of the auxiliary medium fall off quickly. The wastewater hole 15 is controlled to switch by a corresponding control valve. When the pure water level after flushing corresponds to the wastewater hole 15 located below, the wastewater hole 15 located below is opened, and some impurities enter the wastewater pipe 16 through the wastewater hole 15 below and are discharged. After 30 seconds, the wastewater hole 15 located below is closed, and the wastewater hole 15 located in the middle is opened.

[0022] When the pure water level after flushing corresponds to the wastewater hole 15 located in the middle, some impurities are discharged through the wastewater hole 15 located in the middle. According to the above steps, the impurities finally enter the interior of the wastewater pipe 16 through the wastewater hole 15 located at the top and are discharged.

[0023] Finally, close the control valve corresponding to the wastewater hole 15, open the drain pipe at the lower end, so that the pure water after flushing is completely discharged, and then reduce the distance between the corresponding filter plate 1 701 and the filter plate 2 702, and then carry out the next round of sewage filtration.

[0024] Embodiment 3: Figure 2 As shown, the difference between this embodiment and embodiment 1 and embodiment 2 is that the sewage after filtering is discharged and collected through the outlet pipe 5. After a period of treatment, the inside of the filter tank needs to be backwashed. At this time, the adjustment mechanism 8 is used to adjust the distance between the filter plate 1 701 and the filter plate 2 702. The adjustment mechanism 8 includes a fixed cylinder 801 fixedly connected to the top of the inner surface of the filter tank 1, and an electric push rod 802 is arranged inside the fixed cylinder 801, and one end of the electric push rod 802 is fixedly connected to the fixed cylinder 801 and the other end is fixedly connected to a limit block 803. The outer surface of the lower end of the limit block 803 is fixedly connected to a movable rod 804, and the movable rod 804 is threadedly connected to the fixed cylinder 801; The bottom end of the movable rod 804 crosses and penetrates the three groups of filter plates 1 701 and the three groups of filter plates 2 702 in sequence, and the movable rod 804 is movably connected to the filter plate 1 701, and the movable rod 804 is rotatably connected to the filter plate 2 702. The electric push rod 802 pushes the limit block 803 and the movable rod 804 to move downward, and the movable rod 804 pushes the filter plate 2 702 downward, so that the corresponding distance between the filter plate 1 701 and the filter plate 2 702 is increased, providing sufficient friction space for the medium and impurities.

[0025] A guide assembly 9 for limiting the movement of the filter plate 2 702 is provided between the filter plate 1 701 and the filter plate 2 702, and the guide assembly 9 includes a limit plate 1 901 fixedly connected to the filter plate 2 702, and each group of filter plates 2 702 corresponds to two groups of limit plates 1 901, and the two groups of limit plates 1 901 are symmetrically distributed with the central axis of the filter plate 2 702 as the symmetry axis, and the lower end outer surface of the filter plate 1 701 is fixedly connected to the limit plate 2 902 at the position corresponding to the filter plate 2 702, and the upper end outer surface of the limit plate 1 901 is provided with a movable hole 903, and one end of the limit plate 2 902 passes through the movable hole 903 and is movably connected thereto, to ensure that the filter plate 2 702 does not rotate during the up and down movement, to avoid the relative stillness of the filter plate 2 702 and the cleaning assembly, and the outer surface of one side of the limit plate 2 902 and the top outer surface of the limit plate 1 901 are inclined to one side to avoid impurities from remaining.

[0026] Embodiment 4: Figure 2-4 As shown, the difference between this embodiment and embodiment 1, embodiment 2 and embodiment 3 is that the outer surface of the movable rod 804 is fixedly connected with a connecting plate 10 at a position between the filter plate 1 701 and the filter plate 2 702. Since the movable rod 804 is threadedly connected to the movable cylinder 405, the movable rod 804 drives the connecting plate 10 to rotate during the downward movement of the movable rod 804. The outer surfaces of the upper and lower ends of the connecting plate 10 are provided with movable grooves 12 near the two sides, and the movable grooves 12 are provided with springs 13 and guide posts 14. One end of the spring 13 is fixedly connected to the movable groove 12, and the other end is fixedly connected to the guide post 14. The guide column 14 is movably connected to the movable groove 12, and scrapers 11 are provided on the upper and lower sides of the connecting plate 10, and one end of the guide column 14 passes through the outside of the movable groove 12 and is fixedly connected to the scraper 11. Under the action of the spring 13, the scraper 11 is always in contact with the corresponding filter plate 1 701 and filter plate 2 702. The scraper 11 rotates with the connecting plate 10 and scrapes and cleans the impurities with strong adhesion on the surface of the filter plate 1 701 and filter plate 2 702.

[0027] The working process and principle of the present invention are as follows: Step 1: During filtration, sewage is introduced through the liquid inlet pipe 401, and the motor 406 drives the rotating column 407 to rotate. A vortex effect is formed at the center of the movable cylinder 405 during the rotation of the rotating column 407. Therefore, when the sewage passes through the movable cylinder 405 and flows into the guide pipe 402, solid impurities in the sewage gather toward the center of the movable cylinder 405 under the action of the vortex effect, and some of the solid impurities are entangled on the surface of the bristles 409. Step 2: The sewage that has undergone preliminary impurity removal is evenly sprayed into the interior of the filter tank 1 through the nozzle 403, and the sewage passes through three groups of filter elements 7 in sequence. The media arranged inside the three groups of filter elements 7 filter the sewage layer by layer. The quartz sand is used to remove suspended matter, sediment, rust and other substances contained in the sewage, and the manganese sand iron removal is used to remove impurities such as iron and manganese in the water; Step 3: The filtered sewage is discharged and collected through the outlet pipe 5. After a period of treatment, the inside of the filter tank needs to be backwashed. At this time, the distance between the filter plate 1 701 and the filter plate 2 702 is adjusted, and the electric push rod 802 pushes the limit block 803 and the movable rod 804 downward, and the movable rod 804 pushes the filter plate 2 702 downward, so that the corresponding distance between the filter plate 1 701 and the filter plate 2 702 is increased, providing sufficient friction space for the medium and impurities; Step 4: As the movable rod 804 is threadedly connected to the movable cylinder 405, the movable rod 804 drives the connecting plate 10 to rotate during the downward movement, and the scraper 11 is always in contact with the corresponding filter plate 1 701 and filter plate 2 702 under the action of the spring 13. The scraper 11 rotates with the connecting plate 10 and scrapes and cleans the impurities with strong adhesion on the surface of the filter plate 1 701 and filter plate 2 702, thereby improving the backwashing effect and avoiding a large amount of impurities remaining on the surface of the filter plate from causing adverse effects on the long-term continuous filtration of sewage. Step 5, close the control valve corresponding to the outlet pipe 5, introduce pure water into the interior of the filter tank 1 through the backwash inlet pipe 6, and the pure water is sprayed to the three groups of media through the backwash inlet pipe 6 to backwash the three groups of media. Under the flushing of pure water, the medium and impurities rub against each other, and the impurities on the surface of the auxiliary medium fall off quickly. The wastewater hole 15 is controlled by the corresponding control valve. When the pure water level after flushing corresponds to the wastewater hole 15 located below, the wastewater hole 15 located below is opened, and some impurities are discharged through the wastewater hole 15 below. After 30 seconds, the wastewater hole 15 located below is closed, and the wastewater hole 15 located in the middle is opened; When the pure water level after flushing corresponds to the waste water hole 15 located in the middle, some impurities are discharged through the waste water hole 15 located in the middle. According to the above steps, the impurities finally enter the interior of the waste water pipe 16 through the waste water hole 15 located at the top and are discharged. Step 6: Then close the control valve corresponding to the wastewater hole 15, open the drain pipe at the lower end, so that the pure water after flushing is completely discharged, and then reduce the distance between the corresponding filter plate 1 701 and the filter plate 2 702, and then carry out the next round of sewage filtration.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-media sewage treatment filter with an operating condition adjustment function, comprising a filter tank (1), wherein a top maintenance port (2) is fixedly connected to the outer surface of the upper end of the filter tank (1), and a middle maintenance port (3) is provided near the middle and the bottom of the outer surface of the filter tank (1), characterized in that: A liquid inlet component (4) is provided at a position close to the top end of the outer surface of the filter tank (1), and the liquid inlet component (4) penetrates into the interior of the filter tank (1); The outer surface of the lower end of the filter tank (1) is fixedly connected to a water outlet pipe (5) and a backwash water inlet pipe (6) controlled by a control valve, and three groups of filter elements (7) for storing media are arranged at equal distances in the upper and lower parts of the filter tank (1), and an adjustment mechanism (8) for adjusting the volume of the filter elements (7) is arranged between the three groups of filter elements (7) and the filter tank (1); The filter element (7) comprises a filter plate 1 (701) fixedly connected to the filter tank (1) and a filter plate 2 (702) movably connected to the filter tank (1), wherein the filter plate 1 (701) is located above the corresponding filter plate 2 (702), and a guide component (9) for limiting the movement of the filter plate 2 (702) is provided between the filter plate 1 (701) and the filter plate 2 (702).

2. The multi-media sewage treatment filter with operating condition adjustment function according to claim 1 is characterized in that: The liquid inlet assembly (4) comprises a liquid inlet pipe (401) for introducing sewage into the filter tank (1), and one end of the liquid inlet pipe (401) is fixedly connected to a flow guide pipe (402), one end of the flow guide pipe (402) penetrates into the filter tank (1) and is fixedly connected to the filter tank (1), one end of the flow guide pipe (402) away from the liquid inlet pipe (401) is closed, and a plurality of groups of nozzles (403) are fixedly connected to the outer surface of the flow guide pipe (402) at equal distances.

3. The multi-media sewage treatment filter with operating condition adjustment function according to claim 2 is characterized in that: The guide tube (402) and the liquid inlet tube (401) form an angle of 135 degrees, and one end of the guide tube (402) away from the liquid inlet tube (401) is located above the side of the liquid inlet tube (401); a connecting tube (404) is fixedly connected to the connection between the bottom end of the outer surface of the liquid inlet tube (401) and the guide tube (402), and the connecting tube (404) is in communication with the liquid inlet tube (401); a movable cylinder (405) is detachably sealedly connected to the outer surface of the liquid inlet tube (401), and a motor (406) is provided on the outer surface of the bottom end of the movable cylinder (405); an output end of the motor (406) passes through the interior of the movable cylinder (405) and is fixedly connected to a rotating column (407); a plurality of groups of fixed columns (408) are fixedly connected to the outer surface of the rotating column (407), and bristles (409) are fixedly connected to the outer surface of the fixed column (408).

4. The multi-media sewage treatment filter with operating condition adjustment function according to claim 3 is characterized in that: The adjustment mechanism (8) comprises a fixed cylinder (801) fixedly connected to the top of the inner surface of the filter tank (1), and an electric push rod (802) is arranged inside the fixed cylinder (801), and one end of the electric push rod (802) is fixedly connected to the fixed cylinder (801) and the other end is fixedly connected to a limit block (803), a movable rod (804) is fixedly connected to the outer surface of the lower end of the limit block (803), and the movable rod (804) is threadedly connected to the fixed cylinder (801), the bottom end of the movable rod (804) crosses and penetrates three groups of filter plates (701) and three groups of filter plates (702) in sequence, and the movable rod (804) is movably connected to the filter plate (701), and the movable rod (804) is rotatably connected to the filter plate (702).

5. The multi-media sewage treatment filter with operating condition adjustment function according to claim 4 is characterized in that: The outer surface of the movable rod (804) is fixedly connected to a connecting plate (10) at a position between the first filter plate (701) and the second filter plate (702), and movable grooves (12) are provided on the outer surfaces of the upper and lower ends of the connecting plate (10) near both sides, and a spring (13) and a guide column (14) are provided inside the movable groove (12), one end of the spring (13) is fixedly connected to the movable groove (12), and the other end is fixedly connected to the guide column (14), and the guide column (14) is movably connected to the movable groove (12), and scrapers (11) are provided on the upper and lower sides of the connecting plate (10), and one end of the guide column (14) passes through the outside of the movable groove (12) and is fixedly connected to the scraper (11).

6. The multi-media sewage treatment filter with operating condition adjustment function according to claim 1, characterized in that: The guide assembly (9) comprises a limit plate one (901) fixedly connected to the filter plate two (702), each group of the filter plate two (702) corresponds to two groups of limit plates one (901), and the two groups of limit plates one (901) are symmetrically distributed with the central axis of the filter plate two (702) as the symmetry axis, the lower end outer surface of the filter plate one (701) is fixedly connected to the limit plate two (902) at a position corresponding to the filter plate two (702), and the upper end outer surface of the limit plate one (901) is provided with a movable hole (903), one end of the limit plate two (902) passes through the movable hole (903) and is movably connected thereto, and the outer surface of one side of the limit plate two (902) and the top outer surface of the end of the limit plate one (901) are inclined to one side.

7. The multi-media sewage treatment filter with operating condition adjustment function according to claim 1, characterized in that: A wastewater hole (15) is provided on one side of the inner surface of the filter tank (1) at a position above each group of filter plates (701), and a wastewater pipe (16) is provided on the outer side of the filter tank (1) at a position corresponding to the wastewater hole (15). The wastewater pipe (16) is fixedly connected to and communicates with the wastewater hole (15), and a drainage pipe for draining wastewater is provided on the outer surface of the lower end of the filter tank (1).

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