Multi-medium filter for water treatment

Abstract

The invention relates to a water treatment multi-medium filter, which relates to the technical field of sewage treatment equipment, and comprises a bracket, a tank body, a filtering assembly, a flushing assembly and an adjusting assembly, the top and the bottom of the tank body are respectively communicated with a water inlet pipe and a water outlet pipe; three groups of filtering assemblies are arranged, and each filtering assembly comprises a first partition plate, a second partition plate and a filtering medium; the first partition plate and the second partition plate are arranged in the tank body, and filter holes are formed in the first partition plate and the second partition plate; the filtering media are located between the first partition plate and the second partition plate, and the filtering precision of the three filtering media is gradually increased in the direction close to the bottom of the tank body; the flushing assembly is arranged on the tank body and is used for cleaning the filtering medium; the adjusting assembly is arranged on the tank body and used for adjusting the distance between the first partition plate and the second partition plate. The cleaning efficiency of the filtering medium can be improved.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment equipment technology, and in particular to a multi-media filter for water treatment. Background Technology

[0002] A water treatment filter is a wastewater treatment device that removes impurities from water through filtration. In a water treatment system, it is used to remove suspended solids, colloids, and other impurities from wastewater to prevent damage to subsequent reverse osmosis membrane elements.

[0003] Currently, when filtering wastewater, anthracite, quartz sand, and gravel are commonly used as filter media. In use, multiple filter media are placed in layers in a container, and then the wastewater to be treated is transported into the container. When the wastewater passes through the filter media, suspended solids, colloids, and other impurities in the wastewater adhere to the surface of the filter media, thereby achieving the effect of removing impurities from the wastewater.

[0004] In order to ensure the removal of impurities in the wastewater, the filter media needs to be placed compactly and the filter media particles need to be tightly packed together when filtering wastewater.

[0005] After treating a certain amount of wastewater, impurities will adhere to the filter media, reducing its wastewater treatment efficiency. At this time, the filter media needs to be rinsed. When rinsing the filter media, clean water is usually delivered into the container. As the water passes through the filter media, it carries away the impurities attached to the filter media.

[0006] When cleaning the filter media as described above, because the filter media particles are tightly packed together, it is difficult to remove the impurities attached to the filter media when cleaning it with water. A large amount of water is needed for a long time to continuously rinse, which not only wastes a lot of water resources, but also has low cleaning efficiency. Summary of the Invention

[0007] To improve the cleaning efficiency of the filter media, this application provides a water treatment multi-media filter.

[0008] This application provides a multi-media water treatment filter, which adopts the following technical solution: A multi-media water treatment filter includes a support, a tank, filter components, a flushing component, and an adjustment component. The tank is vertically mounted on the support, with an inlet pipe connected to the top and an outlet pipe connected to the bottom. Three filter components are disposed inside the tank and arranged vertically. Each filter component includes a first partition, a second partition, and filter media. The first and second partitions are coaxially disposed inside the tank, and each partition has filter holes. The filter media are located between the first and second partitions, and the filtration accuracy of the three filter media gradually increases towards the bottom of the tank. The flushing component is mounted on the tank and is used to clean the filter media. The adjustment component is mounted on the tank and is used to adjust the distance between the first and second partitions.

[0009] By adopting the above technical solution, when filtering sewage, the sewage is transported into the tank through the inlet pipe, and then flows into the space between the first and second partitions through the filter holes on the first partition. Suspended solids, colloids, and other impurities in the sewage adhere to the surface of the filter media. After passing through the filter media, the sewage flows out through the filter holes on the second partition. It passes through three filter media with progressively increasing filtration precision. Larger particles in the sewage are removed at the top of the tank, while smaller particles are removed at the bottom of the tank. Finally, it is discharged through the outlet pipe. This not only achieves multiple deep filtration to obtain clear water, but also removes larger particles at the top of the tank, preventing them from clogging the filter holes and filter media on the first partition at the bottom of the tank, thereby improving the sewage treatment effect and efficiency.

[0010] When cleaning the filter media, the flushing assembly starts working to flush the filter media. During the flushing process, the distance between the first and second partitions is adjusted by the adjusting assembly, increasing the distance between the first and second partitions. This reduces the pressure on the filter media between the first and second partitions, making the arrangement of the filter media particles more dispersed. This allows impurities attached to the filter media to be more easily detached from and discharged from the filter media, thereby improving the cleaning efficiency of the filter media.

[0011] Placing the filter media between the first and second partitions can prevent layer disorder during the rinsing process, thus ensuring the filtration efficiency of impurities in wastewater.

[0012] Optionally, a first electric valve is installed on the inlet pipe, a third electric valve is installed on the outlet pipe, the flushing assembly includes a flushing pipe and a drain pipe, the flushing pipe is connected to the bottom of the tank, and the drain pipe is connected to the top of the tank; a second electric valve is installed on the flushing pipe, and a fourth electric valve is installed on the drain pipe.

[0013] By adopting the above technical solution, when filtering wastewater, the first and third electric valves are open, while the second and fourth electric valves are closed, allowing wastewater to enter the tank through the inlet pipe and the treated wastewater to be discharged through the outlet pipe. When filtering the filter media, the first and third electric valves are closed, while the second and fourth electric valves are open. Clean water enters the tank through the flushing pipe and then flows through the filter holes on the second partition between the first and second partitions, cleaning impurities adhering to the surface of the filter media. The cleaned impurities are carried out through the filter holes on the first partition and discharged through the drain pipe, thus achieving backwashing of the filter media. That is, after the clean water enters the tank, it first cleans the filter media with the smallest particle size and then cleans the filter media with the larger particle size. After the water washes the filter media with the smallest particle size, the smaller impurities can more easily pass through the filter media with the larger particle size, improving the flushing efficiency of the filter media.

[0014] Optionally, the tank is rotatably connected to the bracket, and the rotation axis is horizontally set; the flushing assembly also includes a servo motor, which is fixedly mounted on the bracket and is used to drive the tank to rotate.

[0015] By adopting the above technical solution, when cleaning the filter media, the servo motor operates to rotate and invert the tank. Then, the second and fourth electric valves are opened to rinse the filter media with clean water. Since the tank is inverted, the clean water can be directly discharged into the tank through the drain port located at the bottom of the tank after rinsing the filter media. In contrast, traditional backwashing devices require a large amount of water to continuously dilute and discharge the wastewater in the container because the drain port is located at the top of the container. This not only wastes water resources but is also inefficient.

[0016] Optionally, the first partition is located on top of the second partition; the second partition is fixedly connected to the tank body; three sets of adjustment components are provided, each corresponding to one of the filter components; each adjustment component includes a connecting cylinder, a first piston rod, and a second piston rod; the connecting cylinder is coaxially disposed between the first partition and the second partition; one end of the first piston rod is coaxially disposed inside the connecting cylinder, and the other end passes through the connecting cylinder and is fixedly connected to the first partition; one end of the second piston rod is coaxially disposed inside the connecting cylinder, and the other end passes through the connecting cylinder and is fixedly connected to the second partition.

[0017] By adopting the above technical solution, during the cleaning process of the filter medium, when the tank is inverted, the first piston rod slides downward under the gravity of the first partition, and at the same time, the connecting cylinder also slides downward, which increases the distance between the first partition and the second partition. The distance between the first partition and the second partition is adjusted by utilizing the gravity of the first partition itself.

[0018] During the cleaning process of the filter media, the servo motor operates, causing the tank to swing back and forth. As the distance between the first and second baffles increases, the filter media will shake when the tank swings, keeping the filter media in motion. At this time, when the clean water rinses the filter media, it can more easily remove impurities from the filter media, thereby improving the rinsing efficiency of the filter media.

[0019] Optionally, the tank body is provided with a scraping and stirring assembly. Three sets of the scraping and stirring assembly are provided, each corresponding to one of the filtering assemblies. Each scraping and stirring assembly includes a first adjusting cylinder, a second adjusting cylinder, a first scraper, and a second scraper. The first adjusting cylinder is sleeved on the first piston rod and rotatably connected to it. The second adjusting cylinder is sleeved on the second piston rod and rotatably connected to it. A spiral protrusion is fixedly provided on the connecting cylinder. Both the first and second adjusting cylinders have spiral limiting grooves, and the spiral protrusions are positioned within the spiral limiting grooves. The slots are adapted to each other; a plurality of the first scraper and the second scraper are arranged along the circumference of the tank body and are all located between the first partition and the second partition. The first scraper is fixedly connected to the first adjusting cylinder and abuts against the first partition. The second scraper is fixedly connected to the second adjusting cylinder and abuts against the second partition. A limiting component is provided on the connecting cylinder. The limiting component is used to limit the connecting cylinder and the first piston rod so that the connecting cylinder and the first piston rod can only slide along the axial direction of the second piston rod.

[0020] By adopting the above technical solution, during the cleaning process of the filter medium, under the action of the limiting component, the connecting cylinder and the first piston rod can only slide along the axial direction of the second piston rod and will not rotate. Therefore, when the tank is in a swinging state, the height of the first partition relative to the height of the second partition will continuously change. The first partition will drive the first piston rod to slide relative to the connecting cylinder, and the first piston rod will drive the first adjusting cylinder to slide relative to the connecting cylinder. Under the action of the spiral protrusion and the spiral limiting groove, when the first adjusting cylinder slides relative to the connecting cylinder, it will drive the first scraper to rotate relative to the connecting cylinder. Furthermore, when the tank is in a swinging state, the connecting cylinder will also slide relative to the second piston rod. Under the action of the spiral protrusion and the spiral limiting groove, when the connecting cylinder slides relative to the second piston rod, it will drive the second scraper to rotate relative to the connecting cylinder. When the first scraper and the second scraper rotate, they can not only scrape the first partition and the second partition to prevent the filter holes on the first partition and the second partition from being blocked by the filter medium, but also stir the filter medium, so that the filter medium can be easily rinsed clean by the water, thus improving the cleaning efficiency of the filter medium.

[0021] Optionally, the tank body is equipped with a detection component, which includes a first pressure sensor, a second pressure sensor, and a controller. The first pressure sensor is fixedly installed inside the inlet pipe and is used to detect the water pressure information inside the inlet pipe and convert it into a water pressure signal, which is then input to the controller. The second pressure sensor is fixedly installed inside the outlet pipe and is used to detect the water pressure information inside the outlet pipe and convert it into a water pressure signal, which is then input to the controller. The controller is fixedly installed on the bracket and is electrically connected to the first pressure sensor, the second pressure sensor, the first electric valve, the second electric valve, the third electric valve, the fourth electric valve, and the servo motor. The controller is used to receive the pressure signals detected by the first pressure sensor and the second pressure sensor and to control the working status of the first electric valve, the second electric valve, the third electric valve, the fourth electric valve, and the servo motor.

[0022] By adopting the above technical solution, during the sewage filtration process, the first and second pressure sensors are always in working condition, monitoring the water pressure information of the inlet and outlet pipes in real time. When the pressure in the inlet pipe is greater than the pressure in the outlet pipe and exceeds the preset value, it indicates that a certain amount of impurities have adhered to the filter medium, affecting the flow of sewage and the filtration effect on impurities in the sewage. At this time, the controller controls the first and third electric valves to close, and the second and fourth electric valves to open. The servo motor is started, driving the tank to rotate and invert, realizing the automation of filter medium cleaning. This allows for timely cleaning of the filter medium, ensuring the removal effect of impurities in the sewage.

[0023] Optionally, a groove is formed on the inner side wall of the connecting cylinder, and the length direction of the groove is parallel to the length direction of the second piston rod; the limiting component includes a first slider and a second slider, the first slider is fixedly disposed on the first piston rod, the second slider is fixedly disposed on the second piston rod, and both the first slider and the second slider are slidably disposed in the groove.

[0024] By adopting the above technical solution, the connecting cylinder and the first piston rod are limited by the first slider, the second slider and the sliding groove, so that the connecting cylinder and the first piston rod can only slide along the axial direction of the second piston rod.

[0025] Optionally, the thickness of the bottom wall of the tank gradually decreases along the direction close to the outlet pipe; the thickness of the top wall of the tank gradually decreases along the direction close to the drain pipe.

[0026] By adopting the above technical solution, the special shape of the bottom wall of the tank allows wastewater to be discharged from the tank more easily after filtration, avoiding the presence of residual wastewater in the tank; the special shape of the top wall of the tank allows water and impurities washed off the filter media to be discharged from the tank more easily, thereby improving the cleaning efficiency of the filter media.

[0027] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting an adjustment component, when cleaning the filter media, the distance between the first and second partitions is adjusted by the adjustment component, so that the distance between the first and second partitions is increased, the pressure on the filter media between the first and second partitions is reduced, and the arrangement between the filter media particles becomes looser, so that the impurities attached to the filter media can be more easily separated from the filter media and discharged, thereby improving the cleaning efficiency of the filter media; 2. By setting up a flushing component, backwashing of the filter media is achieved. That is, after the clean water enters the tank, it will first clean the filter media with the smallest particle size, and then clean the filter media with the larger particle size. After the water washes the filter media with the smallest particle size, the impurities with smaller particle size can pass through the filter media with larger particle size more easily, thereby improving the flushing efficiency of the filter media. 3. By setting a servo motor, during the cleaning process of the filter media, the servo motor works to make the tank in a reciprocating swing state. Due to the increased distance between the first and second baffles, the filter media will shake when the tank swings, making the filter media in motion. At this time, when the clean water rinses the filter media, it can more easily remove impurities from the filter media, thereby improving the rinsing efficiency of the filter media. 4. By setting up a scraping and stirring assembly, during the cleaning process of the filter media, the first scraper and the second scraper will rotate relative to the connecting cylinder. This not only scrapes the first and second partitions to prevent the filter holes on the first and second partitions from being blocked by the filter media, but also stirs the filter media, making it easier for clean water to rinse the filter media clean and improving the cleaning efficiency of the filter media. Attached Figure Description

[0028] Figure 1 It is a structural diagram of an embodiment of the present application; Figure 2 This is a cross-sectional view of an embodiment of this application; Figure 3 yes Figure 2 A magnified view of a section at point A in the middle; Figure 4 This is a magnified view of a portion of the spiral protrusion in an embodiment of this application.

[0029] Explanation of reference numerals in the attached figures: 1. Bracket; 2. Tank body; 21. Inlet pipe; 211. First electric valve; 22. Outlet pipe; 221. Third electric valve; 3. Filter assembly; 31. First partition; 311. Filter pores; 32. Second partition; 33. Filter medium; 4. Flushing assembly; 41. Flushing pipe; 411. Second electric valve; 42. Drain pipe; 421. Fourth electric valve; 43. Steering gear; 5. Adjusting assembly; 51. Connecting cylinder; 511. Slide groove; 512. Spiral protrusion; 52. First piston rod; 53. Second piston rod; 6. Scraping and stirring assembly; 61. First adjusting cylinder; 611. Spiral limiting groove; 62. Second adjusting cylinder; 63. First scraper; 64. Second scraper; 7. Limiting component; 71. First slider; 72. Second slider; 8. Detection components; 81. First pressure sensor; 82. Second pressure sensor; 83. Controller. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0031] This application discloses a multi-media filter for water treatment. (Refer to...) Figure 1 and Figure 2 The water treatment multi-media filter includes a support frame 1, a tank 2, and a flushing assembly 4. The tank 2 is a cylindrical structure, vertically positioned and rotatably connected to the support frame 1. The rotation axes of the tank 2 and the support frame 1 are horizontally aligned. A water outlet pipe 22 is coaxially mounted at the bottom of the tank 2, communicating with the interior of the tank 2. The thickness of the bottom wall of the tank 2 gradually decreases towards the water outlet pipe 22. A third electric valve 221 is fixedly installed on the water outlet pipe 22. The water outlet pipe 22 is connected to a subsequent wastewater treatment station via a flexible hose.

[0032] The flushing assembly 4 includes a flushing pipe 41, a drain pipe 42, and a servo motor 43. The flushing pipe 41 is located at the bottom of the tank 2 and is connected to the outlet pipe 22. The flushing pipe 41 is also connected to the interior of the tank 2 via the outlet pipe 22. An external water source is connected to the flushing pipe 41 via a flexible hose. A pressure pump is installed on the flushing pipe 41 to ensure that the water entering the tank 2 from the flushing pipe 41 has a certain flushing force. The drain pipe 42 is coaxially mounted on the top of the tank 2 and is connected to the interior of the tank 2. The thickness of the top wall of the tank 2 gradually decreases towards the drain pipe 42. A second electric valve 411 is fixedly installed on the flushing pipe 41, and a fourth electric valve 421 is fixedly installed on the drain pipe 42. The drain pipe 42 is connected to a sewage collection tank via a flexible hose. The servo motor 43 is fixedly mounted on the bracket 1, with its output shaft horizontally positioned. The tank 2 is fixedly connected to the output shaft of the servo motor 43.

[0033] A water inlet pipe 21 is connected to the sewage pipe 42. The water inlet pipe 21 is connected to the inside of the tank 2 through the sewage pipe 42. A first electric valve 211 is fixedly installed on the water inlet pipe 21.

[0034] Reference Figure 2The tank body 2 is equipped with three sets of filter components 3, evenly arranged along the axis of the tank body 2. Each filter component 3 includes a first partition 31, a second partition 32, and a filter medium 33. The first partition 31 and the second partition 32 are coaxially arranged inside the tank body 2, with their sidewalls abutting against the inner wall of the tank body 2. The first partition 31 is located on top of the second partition 32, and both the first and second partitions 31 and 32 have several filter holes 311. The second partition 32 is fixedly connected to the inner wall of the tank body 2. The filter medium 33 is disposed between the first partition 31 and the second partition 32, and the filter media 33 in the three sets of filter components 3, from top to bottom, consist of gravel (largest particle size), anthracite (slightly larger particle size), and quartz sand (smallest particle size).

[0035] It should be noted that in each filter assembly 3, the pore size of the filter holes 311 on the first partition 31 and the second partition 32 is slightly smaller than the particle size of the corresponding filter medium 33, thereby preventing the filter medium 33 from leaking out of the filter holes 311. The first partition 31 should be made of a high-density material, and the gravity of the first partition 31 applies pressure to the filter medium 33, making the filter medium 33 compact, thereby ensuring the removal effect of impurities in the wastewater.

[0036] When filtering wastewater, the first electric valve 211 and the third electric valve 221 are opened, and the second electric valve 411 and the fourth electric valve 421 are closed. The wastewater to be treated is transported into the tank 2 through the inlet pipe 21 and then flows downward under its own gravity. The wastewater flows into the space between the first partition 31 and the second partition 32 through the filter holes 311 on the first partition 31. Suspended solids, colloids and other impurities in the wastewater adhere to the surface of the filter medium 33, while the remaining wastewater flows out through the filter holes 311 on the second partition 32 and continues to flow downward until the wastewater passes through three filter media 33 with different particle sizes. Larger particles in the wastewater are removed at the top of the tank 2, while smaller particles are removed at the bottom of the tank 2.

[0037] A detection assembly 8 is installed on the tank body 2. The detection assembly 8 includes a first pressure sensor 81, a second pressure sensor 82, and a controller 83. The first pressure sensor 81 is fixedly installed on the inner wall of the inlet pipe 21. The first pressure sensor 81 is used to detect the water pressure information in the inlet pipe 21 and convert it into a water pressure signal, which is then input to the controller 83. The second pressure sensor 82 is fixedly installed on the inner wall of the outlet pipe 22. The second pressure sensor 82 is used to detect the water pressure information in the outlet pipe 22 and convert it into a water pressure signal, which is then input to the controller 83. The controller 83 is fixedly mounted on the bracket 1. The controller 83 is electrically connected to the first pressure sensor 81, the second pressure sensor 82, the first electric valve 211, the second electric valve 411, the third electric valve 221, the fourth electric valve 421, and the servo motor 43. The controller 83 is used to receive the pressure signals detected by the first pressure sensor 81 and the second pressure sensor 82, and compare the water pressure information in the inlet pipe 21 and the outlet pipe 22. When the pressure in the inlet pipe 21 is greater than the pressure in the outlet pipe 22 and is greater than a preset value, the controller 83 controls the first electric valve 211, the second electric valve 411, the third electric valve 221, the fourth electric valve 421, and the servo motor 43 to work.

[0038] During the wastewater filtration process, the first pressure sensor 81 and the second pressure sensor 82 are always in operation. The first pressure sensor 81 monitors the water pressure in the inlet pipe 21 in real time, and the second pressure sensor 82 monitors the water pressure in the outlet pipe 22 in real time. When the pressure in the inlet pipe 21 is greater than the pressure in the outlet pipe 22 and exceeds the preset value, it indicates that a certain amount of impurities have adhered to the filter medium 33, which affects the flow of wastewater and the filtration effect on impurities in the wastewater. At this time, the filter medium 33 needs to be cleaned.

[0039] When cleaning the filter medium 33, the controller 83 controls the first electric valve 211 and the third electric valve 221 to close, and the second electric valve 411 and the fourth electric valve 421 to open. The servo motor 43 is activated, driving the tank 2 to rotate, causing the tank 2 to invert. At the same time, clean water flows into the tank 2 from the flushing pipe 41, and then flows through the filter holes 311 on the second partition 32 into the space between the first partition 31 and the second partition 32, cleaning the impurities attached to the surface of the filter medium 33. The impurities are carried out through the filter holes 311 on the first partition 31 and continue to flow downward until all three types of filter media 33 with different particle sizes are flushed, and then discharged through the drain pipe 42.

[0040] Because tank 2 is inverted, the filter medium 33 at the top of tank 2 has the smallest particle size, and the impurities attached to it also have the smallest particle size. The filter medium 33 at the bottom of tank 2 has the largest particle size, and the gaps between the filter medium 33 particles are the largest. Therefore, after water rinses the filter medium 33 at the top of tank 2, the impurities carried by the water can more easily pass through the filter medium 33 at the bottom of tank 2. This prevents the impurities carried by the water after rinsing the filter medium 33 at the top of tank 2 from being intercepted by the filter medium 33 at the bottom of tank 2, thus facilitating the cleaning of the filter medium 33.

[0041] Reference Figure 2 and Figure 3 The tank body 2 is equipped with an adjustment assembly 5, which consists of three sets, each corresponding to a filter assembly 3. The adjustment assembly 5 includes a connecting cylinder 51, a first piston rod 52, and a second piston rod 53. The connecting cylinder 51 is coaxially positioned between the first partition 31 and the second partition 32. Both the first piston rod 52 and the second piston rod 53 are coaxially positioned with the connecting cylinder 51. The piston end of the first piston rod 52 is located inside the connecting cylinder 51 and abuts against the inner wall of the connecting cylinder 51. The rod end of the first piston rod 52 passes through the top of the connecting cylinder 51 and is fixedly connected to the first partition 31. The piston end of the second piston rod 53 is located inside the connecting cylinder 51 and abuts against the inner wall of the connecting cylinder 51. The rod end of the second piston rod 53 passes through the bottom of the connecting cylinder 51 and is fixedly connected to the second partition 32.

[0042] Four grooves 511 are evenly formed along the circumference of the inner wall of the connecting cylinder 51, and the length direction of the grooves 511 is the same as the axial direction of the connecting cylinder 51. Four sets of limiting components 7 are provided on the connecting cylinder 51, and the limiting components 7 correspond one-to-one with the grooves 511. The limiting components 7 include a first slider 71 and a second slider 72. The first slider 71 is fixedly set on the piston end of the first piston rod 52, and the second slider 72 is fixedly set on the piston end of the second piston rod 53. The first slider 71 and the second slider 72 are both slidably set in the grooves 511, and the sliding direction is the same as the length direction of the grooves 511.

[0043] During the cleaning process of filter media 33, when the servo motor 43 drives the tank 2 to rotate, causing the tank 2 to invert, the height of the first partition 31 becomes lower than that of the second partition 32. Under the gravity of the first partition 31, the first piston rod 52 and the first slider 71 slide downward along the slide groove 511. At the same time, the connecting cylinder 51 also slides downward under its own gravity and the gravity of the first partition 31, increasing the distance between the first partition 31 and the second partition 32. Due to the loss of pressure from the first partition 31, the arrangement of filter media 33 particles becomes more dispersed. Furthermore, as the tank 2 rotates, the filter media 33 also falls downward, making the arrangement of filter media 33 particles even more dispersed. During the cleaning process of filter medium 33, controller 83 controls servo motor 43 to work, so that tank 2 is in a reciprocating swing state. As the distance between the first partition 31 and the second partition 32 increases, the filter medium 33 will shake when tank 2 swings, so that filter medium 33 is in motion. At this time, when clean water rinses filter medium 33, it can more easily remove impurities from filter medium 33, thus making it easier to rinse filter medium 33 clean.

[0044] Reference Figure 3 and Figure 4 The tank body 2 is equipped with a scraping and stirring assembly 6. Three sets of scraping and stirring assemblies 6 are provided, each corresponding to a filter assembly 3. Each scraping and stirring assembly 6 includes a first adjusting cylinder 61, a second adjusting cylinder 62, a first scraper 63, and a second scraper 64. The first adjusting cylinder 61 is coaxially sleeved on the rod end of the first piston rod 52, and is rotatably connected to the first piston rod 52, with the rotation axis in the same direction as the axis of the first piston rod 52. The second adjusting cylinder 62 is coaxially sleeved on the rod end of the second piston rod 53, and is rotatably connected to the second piston rod 53, with the rotation axis in the same direction as the axis of the second piston rod 53. Both the first adjusting cylinder 61 and the second adjusting cylinder 62 are mounted on a connecting cylinder 51. A spiral protrusion 512 is fixedly provided on the connecting cylinder 51. Spiral limiting grooves 611 are provided on the outer walls of both the first adjusting cylinder 61 and the second adjusting cylinder 62, and the spiral protrusions 512 are adapted to the spiral limiting grooves 611.

[0045] Several first scrapers 63 and second scrapers 64 are evenly arranged along the circumference of the tank body 2. The first scrapers 63 and second scrapers 64 are located between the first partition 31 and the second partition 32. The first scraper 63 is fixedly connected to the outer wall of the first adjusting cylinder 61 and abuts against the first partition 31. The second scraper 64 is fixedly connected to the outer wall of the second adjusting cylinder 62 and abuts against the second partition 32.

[0046] During the cleaning process of the filter medium 33, when the tank 2 is in a swinging state, the height of the first partition 31 relative to the height of the second partition 32 will continuously change. That is, when the height of the first partition 31 changes from higher than the second partition 32 to lower than the second partition 32, or changes from lower than the second partition 32 to higher than the second partition 32, the first partition 31 will drive the first piston rod 52 and the first slider 71 to slide relative to the connecting cylinder 51 along the length direction of the slide groove 511. The first piston rod 52 will drive the first adjusting cylinder 61 to slide relative to the connecting cylinder 51. Under the action of the spiral protrusion 512 and the spiral limiting groove 611, when the first adjusting cylinder 61 slides relative to the connecting cylinder 51, it will drive the first scraper 63 to rotate relative to the connecting cylinder 51. When the first scraper 63 rotates, it can not only scrape the first partition 31 to prevent the filter holes 311 on the first partition 31 from being blocked by the filter medium 33, but also stir the filter medium 33, so as to facilitate the clean water to rinse the filter medium 33 clean.

[0047] When the height of the first partition 31 changes from being higher than the second partition 32 to being lower than the second partition 32, or from being lower than the second partition 32 to being higher than the second partition 32, the connecting cylinder 51 will also slide relative to the second piston rod 53. Since the second adjusting cylinder 62 is rotatably connected to the second piston rod 53, the relative sliding between the connecting cylinder 51 and the second piston rod 53 is equivalent to the relative sliding between the connecting cylinder 51 and the second adjusting cylinder 62. Under the action of the spiral protrusion 512 and the spiral limiting groove 611, when the connecting cylinder 51 and the second adjusting cylinder 62 slide relative to each other, it will drive the second scraper 64 to rotate relative to the connecting cylinder 51. When the second scraper 64 rotates, it can not only scrape the second partition 32 to prevent the filter holes 311 on the second partition 32 from being blocked by the filter medium 33, but also stir the filter medium 33, so that the filter medium 33 can be rinsed clean with water.

[0048] The implementation principle of a multi-media water treatment filter according to an embodiment of this application is as follows: During wastewater filtration, the first electric valve 211 and the third electric valve 221 are opened, while the second electric valve 411 and the fourth electric valve 421 are closed. The wastewater to be treated is transported into the tank 2 through the inlet pipe 21, and then flows into the space between the first and second partitions 31 and through the filter holes 311 on the first partition 31. Suspended solids, colloids, and other impurities in the wastewater adhere to the surface of the filter medium 33, while the remaining wastewater flows out through the filter holes 311 on the second partition 32 and continues to flow downwards until the wastewater passes through three filter media 33 with different particle sizes. Larger particles in the wastewater are removed at the top of the tank 2, while smaller particles are removed at the bottom of the tank 2. Finally, the wastewater is discharged through the outlet pipe 22 to the subsequent wastewater treatment station for further treatment, thus completing the wastewater filtration process.

[0049] During the wastewater filtration process, the first pressure sensor 81 and the second pressure sensor 82 are always in operation, monitoring the water pressure in the inlet pipe 21 and the outlet pipe 22 in real time. When the pressure in the inlet pipe 21 is greater than the pressure in the outlet pipe 22 and exceeds the preset value, the controller 83 controls the first electric valve 211 and the third electric valve 221 to close, and the second electric valve 411 and the fourth electric valve 421 to open. The servo motor 43 is activated, driving the tank 2 to rotate, causing the tank 2 to invert. Clean water flows into the tank 2 from the flushing pipe 41, and then flows through the filter holes 311 on the second partition 32 into the space between the first partition 31 and the second partition 32, cleaning the impurities attached to the surface of the filter medium 33. The impurities are carried out through the filter holes 311 on the first partition 31 and continue to flow downwards until all three filter media 33 with different particle sizes are flushed. Finally, the water is discharged into the wastewater treatment tank through the drain pipe 42.

[0050] During the cleaning process of filter medium 33, after the tank 2 is inverted, the height of the first partition 31 becomes lower than that of the second partition 32. The first partition 31 drives the first piston rod 52 and the first slider 71 to slide downward along the slide groove 511. At the same time, the connecting cylinder 51 also slides downward, increasing the distance between the first partition 31 and the second partition 32. Due to the loss of pressure from the first partition 31, the arrangement of the filter medium 33 particles becomes more dispersed. When the tank 2 rotates, the filter medium 33 also falls downward, making the arrangement of the filter medium 33 particles even more dispersed. During the cleaning process of filter medium 33, the controller 83 controls the servo motor 43 to work, causing the tank 2 to be in a reciprocating swing state. Due to the increased distance between the first partition 31 and the second partition 32, the tank 2 will shake the filter medium 33 when swinging, keeping the filter medium 33 in motion. At this time, when the clean water rinses the filter medium 33, it can more easily remove impurities from the filter medium 33, thus making it easier to rinse the filter medium 33 clean.

[0051] During the cleaning process of the filter medium 33, when the tank 2 is in a swinging state, the height of the first partition 31 relative to the height of the second partition 32 will continuously change. The first partition 31 will drive the first piston rod 52 and the first slider 71 to slide relative to the connecting cylinder 51 along the length direction of the slide groove 511. The first piston rod 52 will drive the first adjusting cylinder 61 to slide relative to the connecting cylinder 51. Under the action of the spiral protrusion 512 and the spiral limiting groove 611, when the first adjusting cylinder 61 slides relative to the connecting cylinder 51, it will drive the first scraper 63 to rotate relative to the connecting cylinder 51. When the first scraper 63 rotates, it can not only scrape the first partition 31 to prevent the filter holes 311 on the first partition 31 from being blocked by the filter medium 33, but also stir the filter medium 33, so that the filter medium 33 can be rinsed clean with water.

[0052] The height of the first partition 31 relative to the height of the second partition 32 will continuously change, and the connecting cylinder 51 will also slide relative to the second piston rod 53. Since the second adjusting cylinder 62 is rotatably connected to the second piston rod 53, the relative sliding between the connecting cylinder 51 and the second piston rod 53 is equivalent to the relative sliding between the connecting cylinder 51 and the second adjusting cylinder 62. Under the action of the spiral protrusion 512 and the spiral limiting groove 611, when the connecting cylinder 51 and the second adjusting cylinder 62 slide relative to each other, the second scraper 64 will be driven to rotate relative to the connecting cylinder 51. When the second scraper 64 rotates, it can not only scrape the second partition 32 to prevent the filter holes 311 on the second partition 32 from being blocked by the filter medium 33, but also stir the filter medium 33, so that the filter medium 33 can be rinsed clean with water.

[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multi-media filter for water treatment, characterized in that: The system includes a support (1), a tank (2), a filter assembly (3), a flushing assembly (4), and an adjustment assembly (5). The tank (2) is vertically mounted on the support (1). A water inlet pipe (21) is connected to the top of the tank (2), and a water outlet pipe (22) is connected to the bottom of the tank (2). The filter assembly (3) is located inside the tank (2). There are three sets of filter assemblies arranged vertically. The filter assembly (3) includes a first partition (31), a second partition (32), and a filter medium (33). The first partition (31) and the second partition (32) are coaxially mounted on the tank (2). Inside the tank, filter holes (311) are provided on both the first partition (31) and the second partition (32); the filter medium (33) is located between the first partition (31) and the second partition (32), and the filtration accuracy of the three filter media (33) gradually increases along the direction close to the bottom of the tank (2); the rinsing assembly (4) is provided on the tank (2), and the rinsing assembly (4) is used to clean the filter medium (33); the adjusting assembly (5) is provided on the tank (2), and the adjusting assembly (5) is used to adjust the distance between the first partition (31) and the second partition (32).

2. The water treatment multi-media filter according to claim 1, characterized in that: The inlet pipe (21) is equipped with a first electric valve (211), and the outlet pipe (22) is equipped with a third electric valve (221); the flushing assembly (4) includes a flushing pipe (41) and a drain pipe (42), the flushing pipe (41) is connected to the bottom of the tank (2), and the drain pipe (42) is connected to the top of the tank (2); the flushing pipe (41) is equipped with a second electric valve (411), and the drain pipe (42) is equipped with a fourth electric valve (421).

3. The water treatment multi-media filter according to claim 2, characterized in that: The tank (2) is rotatably connected to the bracket (1), and the rotation axis is set horizontally; the flushing assembly (4) also includes a servo motor (43), which is fixedly mounted on the bracket (1) and is used to drive the tank (2) to rotate.

4. The water treatment multi-media filter according to claim 3, characterized in that: The first partition (31) is located on top of the second partition (32); the second partition (32) is fixedly connected to the tank (2); the adjustment assembly (5) is provided in three sets, and corresponds one-to-one with the filter assembly (3). The adjustment assembly (5) includes a connecting cylinder (51), a first piston rod (52) and a second piston rod (53); the connecting cylinder (51) is coaxially arranged between the first partition (31) and the second partition (32); one end of the first piston rod (52) is coaxially arranged inside the connecting cylinder (51), and the other end passes through the connecting cylinder (51) and is fixedly connected to the first partition (31); one end of the second piston rod (53) is coaxially arranged inside the connecting cylinder (51), and the other end passes through the connecting cylinder (51) and is fixedly connected to the second partition (32).

5. The water treatment multi-media filter according to claim 4, characterized in that: The tank (2) is equipped with a scraping and stirring assembly (6). There are three sets of the scraping and stirring assembly (6), which correspond one-to-one with the filter assembly (3). The scraping and stirring assembly (6) includes a first adjusting cylinder (61), a second adjusting cylinder (62), a first scraper (63), and a second scraper (64). The first adjusting cylinder (61) is sleeved on the first piston rod (52) and is rotatably connected to the first piston rod (52). The second adjusting cylinder (62) is sleeved on the second piston rod (53) and is rotatably connected to the second piston rod (53). A spiral protrusion (512) is fixedly provided on the connecting cylinder (51). Both the first adjusting cylinder (61) and the second adjusting cylinder (62) are provided with spiral limiting grooves (611). The spiral protrusion (512) and the spiral limiting groove (611) are connected to each other. 11) Adaptable; the first scraper (63) and the second scraper (64) are each arranged in a plurality of circumference along the tank body (2), and are all located between the first partition (31) and the second partition (32). The first scraper (63) is fixedly connected to the first adjusting cylinder (61), and the first scraper (63) abuts against the first partition (31); the second scraper (64) is fixedly connected to the second adjusting cylinder (62), and the second scraper (64) abuts against the second partition (32); a limiting component (7) is provided on the connecting cylinder (51), and the limiting component (7) is used to limit the connecting cylinder (51) and the first piston rod (52), so that the connecting cylinder (51) and the first piston rod (52) can only slide along the axial direction of the second piston rod (53).

6. The water treatment multi-media filter according to claim 3, characterized in that: A detection component (8) is provided on the tank (2). The detection component (8) includes a first pressure sensor (81), a second pressure sensor (82), and a controller (83). The first pressure sensor (81) is fixedly installed inside the water inlet pipe (21). The first pressure sensor (81) is used to detect the water pressure information inside the water inlet pipe (21) and convert it into a water pressure signal, which is then input to the controller (83). The second pressure sensor (82) is fixedly installed inside the water outlet pipe (22). The second pressure sensor (82) is used to detect the water pressure information inside the water outlet pipe (22) and convert it into a water pressure signal, which is then input to the controller (83). The controller (83) is fixedly installed... On the bracket (1), the controller (83) is electrically connected to the first pressure sensor (81), the second pressure sensor (82), the first electric valve (211), the second electric valve (411), the third electric valve (221), the fourth electric valve (421), and the servo motor (43). The controller (83) is used to receive the pressure signals detected by the first pressure sensor (81) and the second pressure sensor (82), and to control the working status of the first electric valve (211), the second electric valve (411), the third electric valve (221), the fourth electric valve (421), and the servo motor (43).

7. The water treatment multi-media filter according to claim 5, characterized in that: The inner wall of the connecting cylinder (51) is provided with a sliding groove (511), the length direction of the sliding groove (511) is parallel to the length direction of the second piston rod (53); the limiting component (7) includes a first slider (71) and a second slider (72), the first slider (71) is fixedly disposed on the first piston rod (52), the second slider (72) is fixedly disposed on the second piston rod (53), and both the first slider (71) and the second slider (72) are slidably disposed in the sliding groove (511).

8. The water treatment multi-media filter according to claim 2, characterized in that: The thickness of the bottom wall of the tank (2) gradually decreases along the direction close to the outlet pipe (22); the thickness of the top wall of the tank (2) gradually decreases along the direction close to the sewage pipe (42).

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