Filter

Abstract

The invention provides a filter, and belongs to the technical field of filters, the filter comprises a tank body and a filter cylinder arranged in the tank body, the filter also comprises: a separation part arranged in the filter cylinder and used for separating the space in the filter cylinder into a plurality of filter cavities and cleaning cavities which are sequentially, alternately and annularly arranged and distributed, and a distance is reserved between the separation part and the filter cylinder, the plurality of filtering cavities are communicated with the cleaning cavity; when the filter cartridge needs to be cleaned, the driving source rotates reversely to drive the cleaning cavity and the filter cavity to rotate, impurities adhered to the filter cartridge can be scraped into the cleaning cavity while the cleaning cavity rotates, then wastewater is added into the filter cavity, and the wastewater is centrifugally filtered, so that the filter cartridge can be cleaned through the arrangement of the inclined surface of the filter cartridge; and impurities which are not scraped off on the filter cartridge can be further cleaned.

Description

Technical Field

[0001] This invention belongs to the field of filter technology, and specifically relates to a filter. Background Technology

[0002] In today's technological development stage, filtration devices, as one of the key equipment for improving fluid purity, are widely used in many industries, and their importance is self-evident. Especially in fields such as metallurgy, chemical industry, tap water treatment, and food processing, water filters play a crucial role in effectively removing impurities from water, ensuring water quality safety, and providing high-quality water protection for production and daily life.

[0003] Chinese patent CN110604970B discloses a cyclone filter for wastewater collection in sponge cities, comprising an inlet pipe, a mounting plate, a second cover, and a first cover. A valve is installed at the lower end of the second cover. A filtration mechanism is installed between the second and first covers. A box is fixedly mounted on the mounting plate, and a U-shaped pipe is fixedly mounted inside the box. A sealing block is fixedly mounted at one end of the U-shaped pipe. The second cover and the U-shaped pipe are connected by the first pipe. The advantages are: This invention utilizes the buoyancy of wastewater on a floating plate to move the blocking block up and down, thereby providing a certain degree of obstruction to the inlet pipe when the wastewater flow rate is too fast, reducing the flow rate of wastewater entering the second cover and preventing excessive wastewater volume in the second cover from affecting the deceleration effect of the buffer structure design; the buffer structure can effectively slow down the speed of wastewater flowing into the main outlet pipe, and this deceleration operation relies entirely on the buoyancy of water on the floating seat, requiring no additional power source.

[0004] Although the above-mentioned technical solution can clean the filter screen through the anti-clogging structure, it cannot discharge the cleaned impurities, causing the impurities inside the equipment to accumulate more and more. When it is necessary to discharge the impurities inside the equipment, the entire equipment must be shut down, which will undoubtedly have an adverse effect on the wastewater filtration efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a filter that addresses the problem that existing cyclone filters used for wastewater collection in sponge cities require shutdown for cleaning when discharging impurities, thus negatively impacting wastewater filtration efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a filter, comprising: a tank and a filter cartridge disposed inside the tank, and further comprising: A separating component is installed inside the filter cartridge to divide the space inside the filter cartridge into multiple filter chambers and cleaning chambers arranged in an alternating ring. There is a distance between the separating component and the filter cartridge, so that the multiple filter chambers and cleaning chambers can communicate with each other. The first scraper and the second scraper are arranged alternately in a circular array on the separating component, and the separating component is provided with an elastic element that brings the first scraper and the second scraper close to the filter cartridge; The limiting component slides up and down on the separating component to alternately limit the first scraper and the second scraper; Wedges, arranged in a ring array on the filter cartridge, can push the first and second scrapers, which are not restrained by the limiting components, away from the filter cartridge; An elastic component, located inside the tank, is used to bring the wedges together and reset towards the center of the filter cartridge; The drive assembly, mounted on the tank, is capable of driving the filter cartridge and the separator to rotate in both directions, while the limiting component alternately limits the first scraper and the second scraper.

[0007] A further technical solution of the present invention is that the elastic component includes multiple sets of elastic structures, each set of elastic structures corresponds to a cleaning chamber or a filtering chamber, and the elastic structure is composed of multiple spring pieces and abutment plates. The spring pieces are fixed to each other by a fixing ring, and the end of the abutment plate away from the spring piece abuts against a wedge on the filter cartridge. The wedge is provided with abutment post that abuts against one end of the abutment plate, so that the elastic component can rotate synchronously with the filter cartridge.

[0008] A further technical solution of the present invention is that when the abutment plate abuts against the wedge block, the abutment plate is in an inclined state. In a set of elastic structures corresponding to the cleaning cavity, the end of the abutment plate near the filter cylinder is used as the hinge point and is inclined in the direction of rotation of the elastic component. In each set of adjacent elastic structures, the inclination direction of the abutment plate is set in a mirror image symmetrically.

[0009] A further technical solution of the present invention is that the top of the separating component is provided with an annular limiting groove, and the top of the filter cartridge is provided with a limiting block that can slide in the limiting groove. When the limiting block moves from one end of the limiting groove to the other end, the cleaning chamber will sequentially cross the area of ​​an adjacent filter chamber and a cleaning chamber and then stop, so that the filtering part of the filter cartridge is replaced.

[0010] A further technical solution of the present invention is that the driving component includes a driving source disposed on the tank body, the output end of the driving source is connected to a screw, the screw passes through the partition component and is threadedly connected to the limiting member, so that the limiting member can move up and down on the partition component, and when the limiting member moves to the limit position, it can drive the partition component to rotate together.

[0011] A further technical solution of the present invention is that the separating component includes a rotating shaft coaxially arranged with the filter cartridge, and multiple separating plates are arranged in a ring array on the rotating shaft. The separating plates divide the filter cartridge into multiple filtration chambers and multiple cleaning chambers. Multiple first scrapers and second scrapers slide alternately inside the separating plates in sequence, and elastic elements are arranged inside the separating plates.

[0012] A further technical solution of the present invention is that multiple wedges are provided, and the number of the filter chamber and the cleaning chamber are matched. The wedges can slide radially on the filter cylinder, and one side is located inside the filter cylinder. Both ends of the wedges are provided with inclined surfaces, so that the first scraper and the second scraper can slide along the inclined surfaces on the surface of the wedges. The elastic force of the elastic component is greater than that of the elastic element.

[0013] A further technical solution of the present invention is that a screw is threadedly connected to the tank body, the screw extends into the inside of the tank body, one end of the screw is located inside the tank body, and a damping block is rotatably connected thereto, the damping block abutting against one side of the fixing ring.

[0014] A further technical solution of the present invention is that a water inlet is provided on one side of the top of the tank, the water inlet is located above the filter cartridge, a drain outlet is provided on one side of the bottom of the tank, the drain outlet is located below the filter cartridge, a waste discharge port is provided in the central area of ​​the bottom of the tank for the discharge of impurities, a guide plate is provided on the top of the cylinder to prevent wastewater from flowing into the space between the filter cartridge and the tank, and an annular frame is provided at the bottom of the filter cartridge to support the filter cartridge and connect the filter cartridge and the waste discharge port.

[0015] A further technical solution of the present invention is that the inner wall of the filter cartridge is designed with an inclined surface. When the filter cartridge rotates, under the action of centrifugal force, impurities will move to the bottom along the inclined surface.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. When the filter cartridge needs to be cleaned, the drive source is reversed to rotate the cleaning chamber and the filtration chamber. As the cleaning chamber rotates, the impurities adhering to the filter cartridge can be scraped off into the cleaning chamber. Then, wastewater is added into the filtration chamber and centrifuged to filter the wastewater. The inclined surface of the filter cartridge can further clean the impurities that have not been scraped off.

[0017] 2. By tilting the abutment plate, when the abutment plate rotates with the filter cartridge, a certain airflow can be generated and blown towards the filter cartridge, thereby backflushing the filter cartridge and further clearing the filter holes. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of a specific embodiment of the present invention; Figure 2 This is a longitudinal sectional view of a specific embodiment of the present invention; Figure 3 This is a cross-sectional view of a specific embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the separator component in a specific embodiment of the present invention; Figure 5 This is a schematic diagram of the installation structure of the elastic component in a specific embodiment of the present invention; Figure 6 for Figure 2 Enlarged structural diagram at point A; Figure 7 This is a cross-sectional view of the filter cartridge in a specific embodiment of the present invention; Figure 8 This is a schematic diagram of the cooperation structure between the limiting block and the limiting groove in a specific embodiment of the present invention; Figure 9 for Figure 2 Enlarged structural diagram at point B; Figure 10 This is a structural diagram showing the two positional states of the filter chamber and the cleaning chamber in a specific embodiment of the present invention.

[0019] In the diagram: 1. Tank body; 11. Inlet; 12. Outlet; 13. Waste outlet; 14. Annular frame; 2. Filter cartridge; 21. Limiting block; 22. Guide plate; 3. Separating component; 31. Filter chamber; 32. Cleaning chamber; 33. Rotating shaft; 34. Separating plate; 35. Limiting groove; 4. Drive assembly; 41. Drive source; 42. Screw; 5. Cleaning component; 51. First scraper; 52. Sliding cavity; 53. Elastic component; 54. Wedge; 541. Abutment; 55. Elastic component; 551. Spring; 552. Fixing ring; 553. Abutment plate; 56. Limiting component; 57. Abutment block; 58. Second scraper; 6. Damping component; 61. Screw; 62. Damping block. Detailed Implementation

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

[0021] Please see Figures 1-10 The present invention provides the following technical solution: a filter, comprising a tank 1, a filter cartridge 2, a separator 3, a drive assembly 4, and a cleaning assembly 5; The filter cartridge 2 is installed inside the tank 1 and is driven by the drive assembly 4, enabling axial forward and reverse rotation within the internal space of the filter cartridge 2. The separator 3 is built into the inner cavity of the filter cartridge 2, dividing the cartridge into a filtration chamber 31 and a cleaning chamber 32. After wastewater enters the filtration chamber 31, a centrifugal force field is formed under the coordinated rotation of the filter cartridge 2 and the separator 3, achieving solid-liquid separation filtration through the wall structure of the filter cartridge 2. The cleaning component 5 is installed on the separator 3. When it rotates synchronously with the separator 3, its scraping structure dynamically cleans the corresponding area of ​​the filter cartridge 2 wall in the filtration chamber 31, scraping away trapped impurities into the cleaning chamber 32, and finally discharging them through the slag discharge channel of the cleaning chamber 32.

[0022] The tank 1 has an overall cylindrical structure with an open top for easy installation and maintenance of internal components. A top cover assembly is installed at the opening, reliably secured with high-strength bolts to form a sealed closure of the top of the tank 1. An inlet 11 is located on one side of the top of the tank 1, positioned directly above the filter cartridge 2. This ensures that wastewater flows directly into the filter cartridge 2 under gravity and undergoes solid-liquid separation via the filter wall structure.

[0023] A drain outlet 12 is provided on one side of the bottom of the tank 1, through which effectively filtered clean water is discharged in a directed manner. A waste discharge outlet 13 is specially provided in the central area of ​​the bottom. The waste discharge outlet 13 is connected to the cleaning chamber 32 of the filter cartridge 2. When the cleaning component 5 performs a scraping action, the trapped solid impurities will automatically fall into the cleaning chamber 32 under the action of gravity and finally be discharged through the waste discharge outlet 13.

[0024] The bottom structure of tank 1 adopts a three-point support design. The evenly distributed support leg components are rigidly fixed to the tank body through high-strength connectors to form a stable equipment support system.

[0025] Please see Figure 2 and Figure 3 The filter cartridge 2 has a cylindrical structure and can rotate around its own axis. It is installed inside the tank 1 and rotates in conjunction with the annular frame 14. The surface of the cartridge is uniformly distributed with an array of filter holes, which achieves the interception of solid impurities in the wastewater through centrifugal filtration.

[0026] A guide plate 22 is installed at the top of the cylinder. The guide plate 22 is integrally molded, with one end forming a sealed contact with the inner wall of the tank 1 and the other end seamlessly connected to the side wall of the filter cartridge 2, forming a wastewater guiding channel. This prevents wastewater from flowing into the space between the filter cartridge 2 and the tank 1, ensuring that all wastewater is filtered through the filter holes.

[0027] The annular frame 14 can be rigidly connected to the tank body 1 through welding or casting. An impurity guide channel is formed in the middle of the annular frame 14, which communicates with the impurity discharge port 13 at the bottom of the tank body 1. A rotatable connection is formed between the annular support surface of the annular frame 14 and the filter cartridge 2, ensuring stable rotation of the cartridge.

[0028] To improve rotational stability, the edge of the ring frame 14 is provided with annular limiting protrusions (see appendix for details). Figure 9 The protruding structure forms a circumferential positioning fit with the bottom of the filter cartridge 2 or the bottom of the separator 3. This limiting structure can effectively suppress axial movement and radial wobble of the filter cartridge 2 or the separator 3, ensuring rotational stability.

[0029] The internal space of the filter cartridge 2 is connected to the area above the annular frame 14. The impurities accumulated in the cleaning chamber 32 fall down along the guide channel of the annular frame 14 under the action of gravity, and finally achieve continuous slag discharge through the discharge port 13.

[0030] Please see Figures 2-5 The filter chamber 31 and cleaning chamber 32 are provided in multiples. In this embodiment, there are three of each, arranged alternately in a ring. Both the filter chamber 31 and cleaning chamber 32 are composed of a partition component 3 and a filter cartridge 2. The partition component 3 includes a rotating shaft 33 coaxially arranged with the filter cartridge 2, and six partition plates 34 are arranged in a ring array on the rotating shaft 33. These partition plates 34 divide the filter cartridge 2 into three filter chambers 31 and three cleaning chambers 32. A certain distance is maintained between the partition plates 34 and the filter cartridge 2 to ensure communication between the filter chambers 31 and cleaning chambers 32. Furthermore, the cleaning component 5 can close the connection between the filter chambers 31 and cleaning chambers 32.

[0031] The upper part of the filter chamber 31 is open, while the lower part is closed (e.g., Figure 4 As shown in the diagram, this design allows wastewater to smoothly enter the filter chamber 31 from the top opening, while the closed bottom effectively prevents wastewater from falling into the internal space of the annular frame 14. The cleaning chamber 32 is closed at the top and open at the bottom. When wastewater is injected into the filter cartridge 2, the closed top of the cleaning chamber 32 effectively prevents wastewater from entering its interior. The open bottom of the cleaning chamber 32 facilitates the discharge of cleaned impurities into the annular frame 14, which are then discharged from the impurity discharge port 13, thus achieving the purpose of removing and cleaning impurities.

[0032] Please see Figures 2-5The cleaning component 5 includes a first scraper 51 and a second scraper 58 disposed inside the partition plate 34. These two scrapers are arranged alternately in a ring, so that each partition plate 34 corresponds to one first scraper 51 or one second scraper 58. A sliding cavity 52 is provided inside the partition plate 34, allowing the first scraper 51 and the second scraper 58 to slide within it. An elastic element 53, a compression spring, is also provided inside the sliding cavity 52. ​​One end of the spring is fixed to the inner wall of the sliding cavity 52, and the other end abuts against the first scraper 51 or the second scraper 58. Under the action of elastic force, the first scraper 51 or the second scraper 58 is pushed to press tightly against the inner wall of the filter cartridge 2. When the partition plate 34 and the filter cartridge 2 rotate relative to each other, the first scraper 51 and the second scraper 58 scrape away the impurities adhering to the filter cartridge 2, thereby achieving the purpose of cleaning the filter cartridge 2.

[0033] Because the filtered impurities remain inside the filter chamber 31, when the first scraper 51 or the second scraper 58 scrapes the impurities off the filter cartridge 2, the impurities will still fall back into the filter chamber 31, making it impossible to effectively discharge the impurities from the filter cartridge 2. Therefore, multiple wedges 54 are arranged in a circular array on the filter cartridge 2. The number of wedges 54 matches the number of filter chambers 31 and cleaning chambers 32; that is, each filter chamber 31 and cleaning chamber 32 corresponds to one wedge 54, and the wedges 54 can extend into the interior of the filter chamber 31 and cleaning chamber 32. Both ends of the wedges 54 are provided with inclined surfaces, allowing the first scraper 51 and the second scraper 58 to slide along the inclined surfaces on the surface of the wedges 54. The wedge 54 can slide radially on the filter cylinder 2. The filter cylinder 2 is provided with an elastic component 55 that pushes multiple wedges 54 toward the center, and the elastic force of the elastic component 55 is greater than that of the elastic element 53. In this way, the wedge 54 can push the first scraper 51 or the second scraper 58 to slide into the partition plate 34 with the help of the elastic force of the elastic component 55. In addition, the rotating shaft 33 is provided with a limiting member 56 that can slide up and down. The first scraper 51 and the second scraper 58 are provided with abutment blocks 57, which are located on the side close to the limiting member 56. The abutment blocks 57 on the first scraper 51 and the second scraper 58 are staggered vertically. When the limiting member 56 is at the uppermost or lowermost end, it will abut against the abutment blocks 57 of the first scraper 51 and the second scraper 58 respectively, thereby limiting the radial sliding of the first scraper 51 or the second scraper 58 through the abutment blocks 57.

[0034] Please see Figure 5Impurities generated during filtration adhere to the filter cartridge 2 corresponding to the filter chamber 31. When cleaning of the filter cartridge 2 is required, the limiting member 56 moves, causing it to abut against the block 57 on the first scraper 51 and simultaneously disengage from the block 57 on the second scraper 58. Subsequently, the drive assembly 4 drives the partition plate 34 to rotate in the direction in which the limiting member 56 disengages from the block 57, that is, in the direction of the second scraper 58. During this process, due to the action of the wedge 54, the second scraper 58 is compressed into the interior of the partition plate 34 along the inclined surface of the wedge 54 as it revolves with the partition plate 34. At this time, the elastic member 53 is compressed, causing the second scraper 58 to move away from the surface of the filter cartridge 2. The radial sliding of the first scraper 51 is restricted by the limiting member 56, so when the first scraper 51 revolves with the partition plate 34, it pushes the corresponding wedge 54 to retract, thereby compressing the elastic member 55. In this way, during the revolution of the first scraper 51, it can always be in close contact with the surface of the filter cartridge 2, thereby scraping away the impurities on the surface of the filter cartridge 2 and achieving the purpose of impurity cleaning.

[0035] As the partition plate 34 rotates, impurities can enter the cleaning chamber 32 from the filter chamber 31 through the gap between the second scraper 58 and the filter cartridge 2. Furthermore, with the movement of the first scraper 51 relative to the filter cartridge 2, the first scraper 51 can scrape off the impurities on the filter cartridge 2, while also preventing the scraped impurities from falling back into the filter chamber 31.

[0036] Please see Figure 4 and Figure 8 The top of the separator 3 is provided with an annular limiting groove 35, and the top of the filter cylinder 2 is provided with a limiting block 21 that can slide within the limiting groove 35. When the separator 3 rotates, the limiting block 21 slides within the limiting groove 35, causing relative movement between the separator 3 and the filter cylinder 2, thereby allowing the first scraper 51 or the second scraper 58 to scrape off impurities on the filter cylinder 2. When the limiting block 21 rotates to abut against one end of the limiting groove 35, the rotation of the separator 3 will drive the filter cylinder 2 to rotate together. At this time, the filter cylinder 2 can quickly filter wastewater by means of centrifugal force.

[0037] When the limiting block 21 moves from one end of the limiting groove 35 to the other, the cleaning chamber 32 will sequentially cross the area of ​​an adjacent filter chamber 31 and a cleaning chamber 32 before stopping (in this scheme, this is equivalent to a 180-degree rotation, such as...). Figure 10 As shown, position A will rotate to the previous position B; when the total number of cleaning chambers 32 and filter chambers 31 is eight, the rotation angle is 135 degrees, and so on. At the same time, the arc length of the limiting groove 35 should also be adjusted accordingly. During the relative rotation of the separating component 3 and the filter cartridge 2, impurities in the adjacent filter chambers 31 will be scraped into the cleaning chamber 32, and the positions of the filter chambers 31 and the cleaning chambers 32 will also be interchanged, so that different positions of the filter cartridge 2 can participate in the filtration of wastewater.

[0038] like Figure 2 As shown, to achieve the rotation drive of the partition component 3, the drive assembly 4 includes a drive source 41 mounted on the top cover of the tank body 1. The drive source 41 is a motor, which is securely mounted on the top cover by a fixed method. A screw 42 is connected to the output end of the drive source 41. The screw 42 is arranged coaxially with the tank body 1, and the screw 42 passes through the partition component 3 and forms a threaded connection with the limiting member 56.

[0039] When the screw 42 rotates, it will cause the limiting member 56 to move upward in a straight line. During this process, due to the friction between the first scraper 51 and the second scraper 58 and the filter cylinder 2, the friction can prevent the limiting member 56 from rotating with the screw 42, thereby ensuring that the limiting member 56 only moves up and down.

[0040] When the limiting member 56 moves to its uppermost position, it abuts against the abutment 57 on the first scraper 51 or the second scraper 58, thereby limiting the radial sliding of the first scraper 51 or the second scraper 58. At the same time, since the limiting member 56 has moved to its uppermost limit position, the continued rotation of the screw 42 will drive the separating member 3 to rotate through the limiting member 56.

[0041] like Figures 3-6 As shown, the elastic component 55 is composed of multiple sets of elastic structures, each set corresponding to a cleaning chamber 32 or a filtering chamber 31. Each elastic structure consists of multiple vertically arranged spring pieces 551 and abutment plates 553. The spring pieces 551 and abutment plates 553 are fixedly connected, and the multiple spring pieces 551 are interconnected by a fixing ring 552. The end of the abutment plate 553 away from the spring pieces 551 abuts against a wedge block 54 on the filter cartridge 2. This abutting action causes the end of the spring piece 551 near the fixing ring 552 to bend under stress, and also causes the abutment plate 553 to tilt.

[0042] Furthermore, in each group of adjacent elastic structures, the inclination direction of the abutment plate 553 is mirror-symmetrically arranged. That is to say, in the elastic structures corresponding to the cleaning chamber 32 or the filtering chamber 31, the inclination direction of the abutment plate 553 is mirror-symmetrically distributed. A stop post 541 is provided on the wedge block 54, and the stop post 541 abuts against one end of the abutment plate 553. Due to the abutting and fixing relationship, when the filter cylinder 2 rotates, it can drive the elastic component 55 to rotate together.

[0043] It should be noted that the inclined direction of the abutment 553 corresponding to the cleaning chamber 32 is consistent with the rotation direction of the elastic component 55, that is, the end of the abutment 553 closest to the filter cartridge 2 is used as the hinge point, and it is inclined in the rotation direction of the elastic component 55. In actual use, through the setting of the elastic structure, a thrust can be applied to the wedge 54, thereby realizing the reset function of the wedge 54.

[0044] When the elastic component 55 rotates with the filter cartridge 2, the abutment 553 is in an inclined state. During the rotation, the abutment 553 will generate a certain airflow. This airflow blows towards the filter cartridge 2, thereby playing a certain back-blowing role on the filter cartridge 2, and thus achieving the effect of clearing the filter holes of the filter cartridge 2.

[0045] Please see Figure 6 To prevent the filter cartridge 2 from rotating together with the separator 3 during the sliding of the limiting block 21 within the limiting groove 35, a damping element 6 is installed on the tank body 1. This damping element 6 includes a screw 61 threadedly connected to the tank body 1, with the screw 61 extending into the interior of the tank body 1. A damping block 62 is rotatably connected to one end of the screw 61 located inside the tank body 1, and the damping block 62 contacts one side of the fixing ring 552.

[0046] By rotating screw 61, the damping block 62 can be pushed closer to the fixed ring 552, thereby increasing the friction between the damping block 62 and the fixed ring 552, effectively preventing the filter cartridge 2 from rotating with the separating component 3 when the limiting block 21 slides in the limiting groove 35. When the limiting block 21 slides to one end of the limiting groove 35, the separating component 3 can overcome the friction between the damping block 62 and the fixed ring 552, causing the filter cartridge 2 and the elastic component 55 to rotate together.

[0047] Please see Figure 7 The filter cartridge 2 has an inclined surface on its inner wall, specifically, the inner diameter of the bottom of the filter cartridge 2 is larger than the inner diameter of the top. At the same time, the first scraper 51 and the second scraper 58 are also set to be inclined on the side closest to the filter cartridge 2. In this way, the first scraper 51 and the second scraper 58 can fit more tightly against the inner bottom wall of the filter cartridge 2.

[0048] When the filter cartridge 2 rotates, under the action of centrifugal force, the impurities that have not been scraped off on the filter cartridge 2 will move down along the inclined surface and eventually fall into the annular frame 14 and be discharged through the impurity discharge port 13.

[0049] Working principle: During use, the device cleans the filter cartridge 2 by rotating the drive source 41 in both directions. When the drive source 41 rotates clockwise, it drives the screw 42 to rotate counterclockwise. At this time, the limiting member 56 can be moved up or down (because there is friction between the separating component 3 and the filter cartridge 2, and there is no mutual rotation between the filter cartridge 2 and the elastic component 55, and friction is generated between the elastic component 55 and the tank 1 through the damping component 6, the limiting member 56 will not rotate together when the screw 42 rotates).

[0050] When the limiting member 56 moves downward to its lowest point, it abuts against the block 57 on the first scraper 51, thus limiting the radial sliding of the first scraper 51. At the same time, it disengages from the block 57 on the second scraper 58, thereby canceling the limitation on the radial sliding of the second scraper 58. At this time, if the screw 42 continues to rotate, since the limiting member 56 has moved to its lowest point and cannot move downward, the rotation of the screw 42 will drive the separating member 3 to rotate, and the separating member 3 will rotate counterclockwise, causing relative rotation between the separating member 3 and the filter cylinder 2 (the filter cylinder 2 remains stationary due to the action of the damping member 6).

[0051] When the limiting block 21 moves to one end of the limiting groove 35, wastewater is injected into the tank 1 through the water inlet 11. The wastewater enters the filter chamber 31 through the guide plate 22 (because the top of the cleaning chamber 32 is closed, it can prevent wastewater from entering the cleaning chamber 32; while the bottom of the filter chamber 31 is closed, so when the wastewater enters the filter chamber 31, it will not fall into the ring frame 14).

[0052] After a certain amount of wastewater is injected into the filter chamber 31, the drive source 41 continues to rotate clockwise, driving the screw 42 to rotate counterclockwise. At this time, the separator 3 will drive the filter cartridge 2 to rotate. When the filter cartridge 2 rotates, under the action of centrifugal force, it can assist in the filtration of wastewater and improve the filtration efficiency of wastewater.

[0053] After the wastewater in the filter chamber 31 has been filtered, the drive source 41 begins to reverse, thereby driving the screw 42 to rotate clockwise. According to the principle described above, the limiting member 56 will move upward until it reaches the top position, and then abut against the block 57 of the second scraper 58, while disengaging from the block 57 of the first scraper 51.

[0054] Then, the screw 42 continues to rotate clockwise, driving the separator 3 to rotate clockwise synchronously. During the rotation of the separator 3, since the limiting position of the first scraper 51 has been removed, the wedge 54 will push the first scraper 51 back into the separator 3, so that the first scraper 51 no longer contacts the inner surface of the filter cartridge 2. In this way, the first scraper 51 can be prevented from scraping the impurities adhering to the filter cartridge 2 corresponding to the filter chamber 31 into the filter chamber 31.

[0055] Meanwhile, the radial displacement of the second scraper 58 is limited, so that when the second scraper 58 revolves with the separating component 3, it always fits tightly against the inner wall of the filter cylinder 2. When the second scraper 58 passes over the part with adhering impurities, it can scrape the impurities from the inside of the filter cylinder 2 into the cleaning chamber 32, and discharge them through the opening at the bottom of the cleaning chamber 32.

[0056] After the second scraper 58 completely removes the impurities adhering to the inner wall of the filter cartridge 2, the cleaning chamber 32 will rotate to a position corresponding to another adjacent cleaning chamber 32. At this position, the filtration part of the filter cartridge 2 has not changed, so the separating component 3 will continue to rotate by an angle of one cleaning chamber 32, so that the positions of the cleaning chamber 32 and the filter chamber 31 alternate, thereby realizing the replacement of the filtration part of the filter cartridge 2.

[0057] At this time, the limiting block 21 slides from one end of the limiting groove 35 to the other end and abuts against it. The first scraper 51 is reset by the elastic element 53, causing the first scraper 51 to abut against the inner wall of the filter cylinder 2, thus preventing the filter chamber 31 and the cleaning chamber 32 from communicating with each other. Subsequently, wastewater is injected into the filter chamber 31. According to the principle described above, when the separating component 3 rotates clockwise, it can drive the filter cylinder 2 to rotate clockwise synchronously. During the rotation of the filter cylinder 2, the centrifugal force can assist in the filtration of wastewater, effectively improving the filtration efficiency of wastewater.

[0058] In addition, when the filter cartridge 2 rotates, it will also drive the abutment plate 553 to rotate together. During the rotation of the abutment plate 553, a certain airflow will be generated and blown towards the filter cartridge 2, thereby playing a certain back-blowing effect on the filter cartridge 2, and thus achieving the purpose of unblocking the filter holes of the filter cartridge 2.

[0059] In addition, an inclined surface is provided at the bottom of the filter cartridge 2. When the filter cartridge 2 rotates, under the action of centrifugal force, the impurities that are not scraped off on the filter cartridge 2 will move down along the inclined surface and fall into the annular frame 14, and finally be discharged through the impurity discharge port 13, which further improves the cleaning effect of the filter cartridge 2.

Claims

1. A filter comprising: The can body (1) and the filter cartridge (2) arranged inside the can body (1) are characterized in that further comprising: The separation component (3) is arranged inside the filter cartridge (2) and is used for separating the space inside the filter cartridge (2) into a plurality of filtering cavities (31) and cleaning cavities (32) arranged in an alternating annular array, the separation component (3) has a distance from the filter cartridge (2) so that the plurality of filtering cavities (31) and cleaning cavities (32) are in communication with each other; The first scraper (51) and the second scraper (58) are arranged in an alternating annular array on the separation component (3), and the separation component (3) is provided with an elastic member (53) for allowing the first scraper (51) and the second scraper (58) to be close to the filter cartridge (2); The limiting member (56) is arranged to slide up and down on the separation component (3) and is used for alternatingly limiting the first scraper (51) and the second scraper (58); The wedge block (54) is arranged in an annular array on the filter cartridge (2) and can push the first scraper (51) and the second scraper (58) not limited by the limiting member (56) away from the filter cartridge (2); The elastic assembly (55) is arranged in the can body (1) and is used for gathering and resetting the wedge block (54) to the middle part of the filter cartridge (2); The driving assembly (4) is arranged on the can body (1) and can drive the filter cartridge (2) and the separation component (3) to be reversely rotated, and simultaneously make the limiting member (56) alternately limit the first scraper (51) and the second scraper (58).

2. A filter according to claim 1, characterised in that: The elastic assembly (55) comprises a plurality of elastic structures, each of which corresponds to a cleaning cavity (32) or a filtering cavity (31), the elastic structure comprises a plurality of elastic sheets (551) and a resisting plate (553), the elastic sheets (551) are fixed to each other by a fixed ring (552), one end of the resisting plate (553) away from the elastic sheets (551) abuts against the wedge block (54) on the filter cartridge (2), the wedge block (54) is provided with a resisting column (541) abutting against one end of the resisting plate (553), so that the elastic assembly (55) can rotate synchronously with the filter cartridge (2).

3. A filter according to claim 2, wherein: The resisting plate (553) is in an inclined state when abutting against the wedge block (54), in a group of elastic structures corresponding to the cleaning cavity (32), one end of the resisting plate (553) close to the filter cartridge (2) is taken as a hinge point, and the resisting plate (553) is inclined to the rotating direction of the elastic assembly (55), in each adjacent group of elastic structures, the inclination directions of the resisting plates (553) are arranged in a mirror image symmetry.

4. The filter of claim 1, wherein: The top of the separation component (3) is provided with an annular limiting groove (35), and the top of the filter cartridge (2) is provided with a limiting block (21) capable of sliding in the limiting groove (35), when the limiting block (21) moves from one end of the limiting groove (35) to the other end, the cleaning cavity (32) will stop after crossing the area of one adjacent filtering cavity (31) and one cleaning cavity (32) in sequence, so as to replace the filtering part of the filter cartridge (2).

5. The filter of claim 1, wherein: The drive assembly (4) includes a drive source (41) disposed on the tank body (1). The output end of the drive source (41) is connected to a screw (42). The screw (42) passes through the partition (3) and is threadedly connected to the limiting member (56), so that the limiting member (56) can move up and down on the partition (3). When the limiting member (56) moves to the limit position, it can drive the partition (3) to rotate together.

6. The filter of claim 1, wherein: The separating component (3) includes a rotating shaft (33) coaxially arranged with the filter cartridge (2). Multiple separating plates (34) are arranged in a ring array on the rotating shaft (33). The separating plates (34) divide the filter cartridge (2) into multiple filtration chambers (31) and multiple cleaning chambers (32). Multiple first scrapers (51) and second scrapers (58) slide alternately inside the separating plates (34). An elastic element (53) is arranged inside the separating plates (34).

7. The filter of claim 2, wherein: Multiple wedges (54) are provided, and the number of the filter chamber (31) and the cleaning chamber (32) are matched. The wedges (54) can slide radially on the filter cylinder (2), and one side is located inside the filter cylinder (2). Both ends of the wedges (54) are provided with inclined surfaces, so that the first scraper (51) and the second scraper (58) can slide along the inclined surfaces on the surface of the wedges (54). The elastic force of the elastic component (55) is greater than the elastic force of the elastic element (53).

8. The filter of claim 2, wherein: The tank body (1) is threaded with a screw (61) that extends into the tank body (1). One end of the screw (61) is located inside the tank body (1) and is rotatably connected to a damping block (62). The damping block (62) abuts against one side of the fixing ring (552).

9. The filter of claim 1, wherein: The tank (1) has an inlet (11) on one side of the top, which is located above the filter cylinder (2). The tank (1) has a drain (12) on one side of the bottom, which is located below the filter cylinder (2). A discharge port (13) is set in the central area of ​​the bottom of the tank (1) for the discharge of impurities. A guide plate (22) is set on the top of the cylinder to prevent wastewater from flowing into the space between the filter cylinder (2) and the tank (1). A ring frame (14) is set at the bottom of the filter cylinder (2) to support the filter cylinder (2) and connect the filter cylinder (2) with the discharge port (13).

10. The filter of claim 1, wherein: The inner wall of the filter cylinder (2) is designed with an inclined surface. When the filter cylinder (2) rotates, the impurities will move to the bottom along the inclined surface under the action of centrifugal force.

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