A multi-media filter for purifying water

Abstract

This invention relates to the field of purified water preparation technology, specifically to a multi-media filter for purified water preparation, comprising an integrated component, a central component, a screen, a first chamber, a second chamber, and a control unit. In this invention, the integrated component and the central component serve as an integrated unit for both the water distribution and backwashing processes. The integrated component, positioned at the lower end, moves up and down, collecting wastewater, impurities, and filter media into its recessed area. The filter media is then screened out, and wastewater and impurities are discharged. This single-action isolation of impurities and wastewater prevents backflow of wastewater and impurities within the integrated component, thus avoiding the problem of backflow affecting the rinsing effect. The integrated component, positioned at the upper end, acts as the water distribution component, evenly distributing water to the filter layer through its distribution holes. This avoids the problem of changes in the filter layer's position or layout due to a single-pipe water distribution method, which could affect the filter's original filtration performance. In summary, the integrated component achieves both water distribution and backwashing drainage operations in a unified manner.

Description

Technical Field

[0001] This invention relates to the field of purified water preparation technology, specifically to a multi-media filter for purified water preparation. Background Technology

[0002] The core process of purified water preparation is a stepped process of pretreatment, core desalination, deep purification, and storage and transportation, which gradually removes various impurities from the water to obtain the final purified water product, while maintaining water quality stability and avoiding secondary pollution throughout the process.

[0003] The main purpose of the pretreatment process is to remove suspended solids, colloids, organic matter, and particulate matter from the raw water. Currently, multi-media filters, activated carbon filters, and softeners are mainly used in the pretreatment process to remove the corresponding types of impurities. In addition, multi-media filters are mainly used to remove suspended solids and colloids (hereinafter referred to as impurities). The current multi-media filters introduce raw water into a container, and the container is lined with anthracite, quartz sand, and pre-made quartz sand from top to bottom. Impurities in the raw water are gradually removed during the process of gradually distributing water from top to bottom.

[0004] It should be further explained that during normal water distribution, the multi-media filter uses a water distributor installed above the container, which works in conjunction with the top water supply pipe to distribute water. Currently, the water distributor mainly uses a single-pipe water supply and multi-pipe water outlet method. Secondly, after long-term use, the multi-media filter needs to be flushed to maintain the filtration performance of the equipment. The flushing methods include forward flushing and backwashing. Forward flushing uses the normal water distribution operation process to clean from top to bottom, while backwashing uses flushing from the bottom of the container to the top to flush out impurities in the multi-media filter media to the top of the filter layer, and then discharge them from the container through the pipe set at the top.

[0005] The following problems exist in the current backwashing process of multi-media filters: 1. During the backwashing process to remove impurities, the single-pipe discharge method can easily lead to high flow velocity in local areas of the container and slow flow velocity in areas far from the discharge point. This can cause some impurities to be difficult to discharge from the container and to flow back into the filter layer, affecting the overall filtration and cleaning effect. Secondly, during forward flushing (normal water distribution operation), the single-pipe water distribution method can easily cause changes in the filter layer due to water flow impact, affecting the filtration performance.

[0006] Although the funnel-shaped (main pipe and branch pipe) operation method can cover the container cross-section, some of the upper media filter material (mainly anthracite) may remain on the above-mentioned operating components or be discharged from the container during the process of removing impurities, causing blockage or reduced filter performance. This will require more maintenance time and costs in the future.

[0007] 2. In order to carry out water distribution operations during forward flushing and normal filtration, as well as drainage operations during backflushing, corresponding components for each process need to be installed on the top of the container. The large number of components requires more container space and incurs more costs. In addition, the operation method is more complicated. Summary of the Invention

[0008] Therefore, it is necessary to provide a multi-media filter for purified water preparation, which aims to solve the problems of the prior art.

[0009] This application provides a multi-media filter for purified water preparation, comprising: a filter, an integrated device and a water and air distribution assembly arranged sequentially from top to bottom inside the filter, and a main pipe communicating with the interior of the filter at the bottom.

[0010] The integrated device includes an integrated component, which is slidably disposed inside the filter. The integrated component has a bowl-shaped structure that is larger at the top and smaller at the bottom. A central component coaxial with the integrated component is fixedly disposed inside the integrated component, and a screen fixedly disposed on the central component is sleeved on the integrated component.

[0011] The integrated component has two chambers: chamber one is used for the flow of sewage during backwashing, and chamber two is used for forward washing and water distribution.

[0012] The filter is equipped with an inlet pipe and an outlet pipe. Multiple water distribution holes are opened on the lower circumferential surface of the integrated component. When the integrated component moves up to the highest height, it connects with the inlet pipe and performs water distribution and forward flushing operations. When the integrated component moves down to the lowest height, it moves up and down within the set height to perform backwashing and collection operations.

[0013] The integrated component and the screen are connected by two symmetrically distributed drop cylinders that are used to allow the upper filter material to fall back after backwashing. The central component is equipped with a control unit for controlling the closure of the upper end of the drop cylinder.

[0014] According to an advantageous embodiment, the chamber includes an annular cavity, the upper end face of the inner cylinder of the integrated component has an annular cavity, the lower end face of the integrated component has a fixed sleeve, the lower end face of the integrated component has a circular connecting cavity that communicates with the sleeve, and the inner wall of the annular cavity has two symmetrically distributed fan-shaped cavities that communicate with the connecting cavity.

[0015] A rotating ring is rotatably mounted on the central component. Vertical lifting rods with straight axes are fixedly mounted on both the front and rear sides of the rotating ring, and the lifting rods pass through the upper end of the filter.

[0016] According to an advantageous embodiment, the water outlet pipe is L-shaped, the axis of the vertical section of the water outlet pipe is collinear with the axis of the sleeve and the two are connected, and the horizontal section of the water outlet pipe is a flexible hose.

[0017] According to an advantageous embodiment, the control unit includes two cover plates hinged to the screen and corresponding one-to-one with the discharge cylinders. The hinge points of the cover plates and the screen are far from the center member. During backwashing, the control unit controls the cover plates to block the upper opening of the discharge cylinder.

[0018] According to an advantageous embodiment, isosceles triangular guide blocks are fixedly provided on both the left and right end faces of the material discharge cylinder located in the middle portions of chamber one and chamber two. The guide blocks are inclined from the front and rear sides near the center of the material discharge cylinder to the position away from the material discharge cylinder.

[0019] According to an advantageous embodiment, the upper end of the central component is provided with a mating groove that is larger at the top and smaller at the bottom, and the upper diameter of the mating groove is the same as the diameter of the water inlet pipe.

[0020] The second chamber includes a water distribution chamber. The integrated component has a water distribution chamber composed of an inclined annular chamber and a disc chamber. The integrated component has two connecting grooves distributed front and back. The central component has two curved grooves distributed front and back and connected to the docking groove. The connecting grooves connect the curved grooves and the water distribution chamber.

[0021] According to an advantageous embodiment, the water distribution holes are circumferentially evenly distributed and opened on the lower circumferential surface and bottom plane of the integrated component, and the water distribution holes are connected to the two chambers.

[0022] According to an advantageous embodiment, a fixing block is fixedly disposed on the rotating ring, and a telescopic sleeve rod with a vertical axis is rotatably disposed between the fixing block and the upper end of the filter.

[0023] The telescopic section of the telescopic sleeve is fixedly fitted with an external tooth one, and the upper end of the central part is fixedly fitted with an external tooth two that meshes with the external tooth one.

[0024] According to an advantageous embodiment, the control unit further includes a receiving cavity, on which two receiving cavities are provided symmetrically distributed from left to right. A gear with its axis extending forward and backward is rotatably disposed within the receiving cavity, and two toothed plates distributed from left to right and meshing with the gear are rotatably disposed within the receiving cavity.

[0025] The toothed plate near the cover plate is fixedly equipped with a connecting frame through the connecting block of the central part. The end face of the connecting frame facing the cover plate is hinged to the upper surface of the cover plate by a spring rod.

[0026] A connecting rod with a vertical axis is provided through the central component, corresponding to each gear. The connecting rod is connected to the toothed plate away from the corresponding cover plate. A fitting block is fixedly provided on the upper end face of the connecting rod. A return spring is provided between the fitting block and the central component.

[0027] An extrusion ring is fitted onto the water inlet pipe for pressing the bonding block. During the upward movement of the integrated component, the extrusion ring presses the bonding block, causing the connecting rod to move downward relative to the integrated component.

[0028] In summary, the present invention has the following beneficial effects: The integrated component and the central component are integrated into a single unit for both the water distribution and backwashing processes. The integrated component, positioned at the lower end, moves up and down repeatedly, collecting wastewater, impurities, and filter media into its recessed area. This allows for the separation of filter media and the discharge of wastewater and impurities. A single action isolates impurities and wastewater, preventing backflow of wastewater and impurities within the integrated component that could affect the rinsing effect. The integrated component, positioned at the upper end, acts as a water distribution component, evenly distributing water to the filter layer through its distribution holes. This avoids the problem of changes in the filter layer's position or layout due to a single-pipe water distribution method affecting the original filtration performance of the filter. In conclusion, the integrated component enables both water distribution and backwashing drainage operations, simplifying the operational steps. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0030] Figure 1 A three-dimensional structural schematic diagram of a multi-media filter for purifying water provided according to an embodiment of the present invention is shown.

[0031] Figure 2 A partial cross-sectional three-dimensional structural schematic diagram of a multi-media filter for purifying water provided according to an embodiment of the present invention is shown.

[0032] Figure 3 A front sectional view of the integration component, the central component, and the chamber provided according to an embodiment of the present invention is shown.

[0033] Figure 4 A partial cross-sectional perspective view of the three-dimensional structure between the integrated component, the central component, and the flow guide block provided according to an embodiment of the present invention is shown.

[0034] Figure 5 A side sectional view of the integration component, the central component, and the second chamber provided according to an embodiment of the present invention is shown.

[0035] Figure 6 A schematic diagram of a cover plate gradually opening according to an embodiment of the present invention is shown.

[0036] The above-mentioned figures include the following reference numerals: 1. Filter; 2. Integrated device; 20. Integrated component; 21. Central component; 22. Screen; 23. Chamber 1; 230. Annular cavity; 231. Sleeve; 232. Connecting cavity; 233. Sector-shaped cavity; 24. Chamber 2; 240. Water distribution chamber; 241. Connecting groove; 242. Curved groove; 25. Inlet pipe; 26. Outlet pipe; 27. Water distribution hole; 28. 1. Feeding cylinder; 29. ​​Guide block; 30. Rotating ring; 31. Lifting rod; 32. Docking groove; 4. Control unit; 40. Cover plate; 41. Telescopic sleeve rod; 42. External gear one; 43. External gear two; 44. Receiving cavity; 45. Gear; 46. Gear plate; 47. Connecting frame; 48. Spring rod; 480. Extrusion ring; 49. Adhesive block; 490. Return spring; 6. Water and air distribution assembly; 7. Main pipe. Detailed Implementation

[0037] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] like Figure 1 , Figure 2 and Figure 4 As shown, a multi-media filter 1 for purifying water includes: a filter 1, an integrated device 2 and a water and air distribution assembly 6 arranged sequentially from top to bottom inside the filter 1, the water and air distribution assembly 6 including a perforated plate, multiple water caps evenly distributed on the perforated plate and a support layer, and a main pipe 7 communicating with the interior is arranged below the filter 1.

[0039] The integrated device 2 includes an integrated component 20. The integrated component 20 is slidably disposed inside the filter 1. The integrated component 20 has a bowl-shaped structure that is larger at the top and smaller at the bottom. Both the inner and outer sides of the upper end of the integrated component 20 are chamfered. A coaxial central component 21 is fixedly disposed inside the integrated component 20. A screen 22 fixedly disposed on the integrated component 20 is sleeved on the central component 21.

[0040] like Figure 3 and Figure 5 As shown, the integrated component 20 has a first chamber 23 and a second chamber 24. The first chamber 23 is used for the flow of sewage during backwashing, and the second chamber 24 is used for forward washing and water distribution.

[0041] like Figure 2 and Figure 6As shown, the filter 1 is provided with an inlet pipe 25 at the upper end, and an outlet pipe 26 located below the integrated component 20 is provided in the middle of the filter 1. Multiple water distribution holes 27 are opened on the lower circumferential surface of the integrated component 20. When the integrated component 20 moves up to the highest height, it connects with the inlet pipe 25, and the integrated component 20 performs water distribution and forward rinsing operations. When the integrated component 20 moves down to the lowest height, the integrated component 20 moves up and down within the set height to perform backwashing and collection operations.

[0042] like Figure 1 and Figure 3 As shown, two symmetrically distributed drop cylinders 28 are provided on the integrated component 20 and the screen 22 to allow the upper filter material to fall back after backwashing. A control unit 4 is provided on the central component 21 to control the closing of the upper end of the drop cylinder 28.

[0043] During operation, when the integrated component 20 moves down to its lowest height, a backwashing operation is performed. At this time, the upper water inlet pipe 25 stops operating, and the main pipe 7 supplies water upward through the water and air distribution component 6 to backwash the multi-layer media located on the support layer. The generated sewage, carrying impurities, accumulates above the uppermost medium. The lowest height of the integrated component 20 is below the liquid surface after water supply. Then, the integrated component 20 is controlled to move up and down repeatedly, passing through the liquid surface. Due to the bowl-shaped feature of the integrated component 20, during the process of the integrated component 20 moving from the liquid surface to below the liquid surface, the lowest point inside the integrated component 20 is less than the liquid surface height. Therefore, the sewage will converge into the integrated component 20. Thus, the sewage carries impurities and the uppermost filter media from the periphery of the filter 1 into the integrated component 20. The screen 22 separates the sewage and impurities from the filter media. Afterward, the integrated component 20 rises and moves above the liquid surface, separating the sewage and impurities outside the integrated component 20 from those inside the integrated component 20. The wastewater and impurities inside are separated, while the wastewater and impurities flowing into the integrated component 20 enter the outlet pipe 26 through the chamber 23 and are discharged from the filter 1. The above operation is repeated to continuously separate impurities from the filter media and discharge impurities and wastewater into the filter 1. The multi-media filter media in the filter 1 is rinsed. It should be further noted that by moving the integrated component 20 up and down, impurities located in various positions in the filter 1 can move closer to the center of the integrated component 20, improving the collection and removal effect. Compared with the existing method of directly opening a pipe for sewage discharge on the filter 1, the sewage discharge method proposed by this technical solution avoids the problem of weak suction in local positions far from the pipe in the existing sewage discharge method, which makes it difficult to ensure that all impurities can be discharged. In addition, the screen 22 prevents the filter media from being discharged from the filter 1, and the control unit 4 makes the filter media flow back into the filter media layer, avoiding the problem of poor filtration efficiency caused by the component or separation defects of the multi-media filter media in the filter 1.

[0044] It should be further explained that during the backwashing stage, the main pipe 7 continuously supplies water upwards, while wastewater is continuously discharged through the integrated component 20 and the outlet pipe 26. This has been confirmed by external personnel in the art through testing, ensuring that the liquid level inside the filter 1 always maintains the initial water supply level. This is a known technical feature and will not be described further.

[0045] When the integrated component 20 moves to its highest height, it performs forward flushing or normal filtration. At this time, the integrated component 20 moves up and connects with the water inlet pipe 25. The liquid that needs to be filtered enters the chamber 24 of the integrated component 20 through the water inlet pipe 25 and is discharged through multiple water distribution holes 27, so that the liquid is evenly distributed on the filter layer. This avoids the problem of the filter material being affected by the water flow impact due to the single-point water outlet method, thus avoiding the problem of affecting the filtration effect of the filter 1.

[0046] like Figure 2 , Figure 3 and Figure 6 As shown, chamber 23 includes an annular cavity 230. The annular cavity 230 is opened on the upper end face of the inner cylinder of the integrated component 20. A sleeve 231 is fixedly installed on the lower end face of the integrated component 20. A circular connecting cavity 232 is opened on the lower end face of the integrated component 20 and communicates with the sleeve 231. In order to accommodate the up-and-down reciprocating movement of the integrated component 20, the water outlet pipe 26 is L-shaped. The axis of the vertical section of the water outlet pipe 26 is collinear with the axis of the sleeve 231 and the two are connected. The horizontal section of the water outlet pipe 26 is a flexible hose. Two symmetrically distributed fan-shaped cavities 233 are opened on the inner wall of the annular cavity 230. The fan-shaped cavities 233 communicate with the connecting cavity 232.

[0047] A rotating ring 30 is rotatably sleeved on the central component 21. A vertically oriented lifting rod 31 is fixedly installed on both the front and rear sides of the rotating ring 30. The lifting rod 31 passes through the upper end of the filter 1 and is controlled to move up and down by an external electric push rod (not shown in the figure).

[0048] like Figure 1 , Figure 3 , Figure 4 and Figure 6 As shown, the control unit 4 includes two cover plates 40 that are hinged to the screen 22 and correspond one-to-one with the discharge cylinder 28. The hinge point between the cover plate 40 and the screen 22 is far away from the center member 21. During backwashing, the control unit 4 controls the cover plate 40 to block the upper opening of the discharge cylinder 28. If it is necessary to improve the sealing performance of the cover plate 40, a rubber ring (not shown in the figure) is provided on the lower end face of the cover plate 40.

[0049] like Figure 4As shown, in order to avoid the problem that some impurities cannot flow due to the obstruction of the left and right sides of the discharge cylinder 28 in the first chamber 23 and the second chamber 24, isosceles triangular guide blocks 29 are fixedly provided on both the left and right ends of the discharge cylinder 28 in the middle of the first chamber 23 and the second chamber 24. The guide blocks 29 are inclined from the front and rear sides near the center of the discharge cylinder 28 to the position away from the discharge cylinder 28.

[0050] During backwashing, the control unit 4 first causes the cover plate 40 to fit against the discharge cylinder 28, sealing the upper end of the discharge cylinder 28. This creates a one-way space within the recessed area of ​​the integrated component 20, with an opening at the top and only allowing flow through the chamber 23 and outlet pipe 26 at the bottom. This prevents most wastewater and impurities from directly flowing back through the discharge cylinder 28 during backwashing, thus avoiding impact on the overall washing effect. Then, the external electric push rod moves the integrated component 20 to its lowest height. The main pipe 7 supplies water upwards through the water and air distribution assembly 6, ensuring the liquid level is higher than the top of the integrated component 20. The external electric push rod then moves the integrated component 20 up and down repeatedly above the liquid level. Wastewater carrying impurities and filter media in the filter 1 flows from the upper edge of the integrated component 20 to above the screen 22. The screen 22 filters the filter media, water, and impurities. (It should be noted that the uppermost layer of filter media...) The coal used is usually anthracite, and its particle size is typically larger than the impurities that need to be filtered. Therefore, the aperture of the screen 22 needs to be specifically designed for both the anthracite particle size and the impurity particle size. This ensures that when wastewater carries impurities and anthracite, the impurities can pass through while the anthracite is screened and retained. Secondly, the water flow flushing method reduces the problem of impurity retention or clogging. Water and impurities pass through the screen 22 into the annular cavity 230, and then enter the connecting cavity 232 along the two fan-shaped cavities 233. Finally, they enter the outlet pipe 26 through the sleeve 231 and are discharged from the filter 1. In summary, the above method ensures that the entire circular horizontal cross-section of the filter 1 has an effective sewage discharge area, ensuring that impurities around it can be effectively discharged. Furthermore, by repeatedly separating the integrated component 20 and the inner cavity of the filter 1, the problem of impurity backflow affecting the flushing effect is avoided. At the same time, the problem of the filter media being discharged together and affecting the original filtration effect is also avoided.

[0051] like Figure 5 and Figure 6 As shown, the upper end of the center component 21 is provided with a mating groove 32 that is larger at the top and smaller at the bottom. The upper diameter of the mating groove 32 is the same as the diameter of the water inlet pipe 25, and the upper opening of the mating groove 32 is chamfered.

[0052] The second chamber 24 includes a water distribution chamber 240. The integrated component 20 has a water distribution chamber 240 consisting of an inclined annular cavity 230 and a disc cavity. The integrated component 20 has two connecting grooves 241 distributed front to back. The central component 21 has two curved grooves 242 distributed front to back and connected to the docking groove 32. The connecting grooves 241 connect the curved grooves 242 and the water distribution chamber 240.

[0053] Water distribution holes 27 are evenly distributed around the circumference and are opened on the lower circumferential surface and bottom plane of the integrated part 20. Water distribution holes 27 are connected to the second chamber 24.

[0054] During forward rinsing or regular filtration water distribution, the external electric push rod moves the integrated component 20 and the center component 21 upwards synchronously. The lower end of the inlet pipe 25 gradually engages with the docking groove 32. When the integrated component 20 reaches its highest position, the inlet pipe 25 and the docking groove 32 are fully connected. Water distribution then begins, with external water flowing into the docking groove 32 through the inlet pipe 25. Subsequently, the water flows through the docking groove 32 into the curved groove 242 and the connecting groove 241, and then gradually into the water distribution chamber 240. The water is then pumped out of the integrated component 20 through each water distribution hole 27, forming a multi-point uniform water distribution operation. This avoids the problem of the filter media position or layout being affected by single-point water distribution. In addition, it should be noted that a rubber sealing ring (not shown in the figure) is fitted on the outer wall of the inlet pipe 25 and the docking groove 32. By squeezing the sealing ring, the sealing effect between the docking groove 32 and the inlet pipe 25 is ensured. This ensures that during the water distribution process, external pressure can be applied to ensure that the water flow is evenly distributed to the filter media through the water distribution holes 27, thereby improving the water distribution effect.

[0055] like Figure 2 and Figure 6 As shown, a fixed block is fixedly installed on the rotating ring 30, and a telescopic sleeve 41 with a vertical axis is rotatably installed between the fixed block and the upper end of the filter 1. The part of the telescopic sleeve 41 located outside the filter 1 is connected to an external motor (not shown in the figure).

[0056] The telescopic section of the telescopic sleeve 41 is fixedly fitted with an external tooth 42, and the upper end of the center piece 21 is fixedly fitted with an external tooth 43 that meshes with the external tooth 42.

[0057] During operation, in the forward flushing or conventional water distribution and filtration stages, the telescopic sleeve 41 causes the outer tooth 42 to move up and down synchronously with the outer tooth 43. Simultaneously, the external motor drives the telescopic sleeve 41 and the outer tooth 42 to rotate synchronously. Through the meshing between the outer tooth 42 and the outer tooth 43, the outer tooth 43 drives the central component 21 and the integrated component 20 to rotate synchronously, improving the uniformity of water distribution. In addition, it should be noted that both the outer tooth 42 and the outer tooth 43 are higher than the upper end of the integrated component 20. Therefore, during operation, the outer teeth 42 and the outer tooth 43 will not directly contact the water flow. However, considering the problem of water splashing during operation, protective covers can be installed around the outer teeth 42 and the outer tooth 43 to protect the working environment of the outer teeth 42 and the outer tooth 43. This technical feature belongs to the existing external technology and will be explained again without further elaboration.

[0058] like Figure 1 , Figure 3 and Figure 4 As shown, the control unit 4 also includes a receiving cavity 44. Two receiving cavities 44 are symmetrically distributed on the center member 21. A gear 45 with its axis extending back and forth is rotatably arranged in the receiving cavity 44. Two toothed plates 46 are rotatably arranged in the receiving cavity 44 and mesh with the gear 45.

[0059] A connecting frame 47 is fixedly installed on the toothed plate 46 near the cover plate 40 via a connecting block that passes through the center member 21. The end face of the connecting frame 47 facing the cover plate 40 is hinged to the upper end face of the cover plate 40 via a spring rod 48.

[0060] A connecting rod is provided through the center component 21, corresponding one-to-one with the gear 45 and with its axis vertical. The connecting rod is connected to the tooth plate 46 away from the corresponding cover plate 40. A fitting block 49 is fixedly provided on the upper end face of the connecting rod. A return spring 490 is provided between the fitting block 49 and the center component 21.

[0061] A compression ring 480 is fitted on the water inlet pipe 25 for squeezing the bonding block 49. During the upward movement of the integrated component 20, the compression ring 480 squeezes the bonding block 49, causing the connecting rod to move downward relative to the integrated component 20.

[0062] During operation, in the forward flushing process, the center component 21 and the integrated component 20 move upwards, the extrusion ring 480 gradually contacts the mating block 49, and prevents the mating block 49 from moving further upwards. That is, the mating block 49 and the connecting rod move downwards relative to the integrated component 20, the return spring 490 is compressed, and the connecting rod drives the corresponding toothed plate 46 to move downwards synchronously. Through the meshing between the corresponding two toothed plates 46 and the gear 45, the other toothed plate 46 drives the connecting frame 47 and the spring rod 48 to move upwards synchronously. During the upward movement, the spring rod 48 drives the cover plate 40 to move. The telescopic section of the spring rod 48 extends adaptively. When the water inlet pipe 25 is engaged with the docking groove 32, the cover plate 40 is flipped, so the upper opening of the discharge cylinder 28 is in the open state. Subsequently, in the center component 21 and the integrated component 20 During synchronous rotation, the rotational action causes a small amount of anthracite located in the integrated component 20 to be thrown out by centrifugal force and assists the anthracite to roll into the feed cylinder 28 and flow back into the filter layer through the integrated component 20. After the above actions are completed, the integrated component 20 moves down to reset. The elastic force generated by the deformation of the reset spring 490 causes the toothed plate 46 to reset. Therefore, the spring rod 48 drives the cover plate 40 to move down. It should be noted that the cover plate 40 and the spring rod 48 form an obtuse angle at this time. Therefore, the spring rod 48 moves down, causing the cover plate 40 to reset and close the feed cylinder 28. At the same time, the extension section of the spring rod 48 extends and retracts adaptively. In summary, the above process ensures that the filter material is not lost and can be reset into the filter layer. Therefore, while improving the rinsing effect, it avoids affecting the original filtration performance of the filter 1.

[0063] It should be further explained that, compared to the existing technology of single-pipe inward water distribution and outward drainage or single bowl-shaped structure for water distribution, this technical solution adds an integrated component 20, a central component 21, a screen 22, a first chamber 23, a second chamber 24, a discharge cylinder 28, and a control unit 4. During the backwashing operation, the integrated component 20 moves up and down on the liquid surface, collecting sewage, impurities, and filter media into the recessed area of ​​the integrated component 20, screening out the filter media, and discharging sewage and impurities. This single action isolates impurities and sewage, preventing the backflow of sewage and impurities within the integrated component 20 from affecting the rinsing effect. Furthermore, when forward rinsing and normal water distribution are required, the integrated component 20 moves upward, serving as... The water distribution body allows water to flow through the inlet pipe 25 and finally through the water distribution holes 27 to be evenly distributed into the filter layer. This avoids the problem that the original filtration performance of the filter 1 would be affected by changes in the position or layout of the filter layer due to the single-pipe water distribution method. Therefore, the integrated component 20 in this technical solution can perform backwashing, forward washing, or conventional water distribution operations at different heights. This not only improves the impurity removal effect but also reduces the loss of filter media during washing and enables uniform water distribution. In addition, the added components are all conventional existing mechanical parts that can be used for a long time after a single installation. Therefore, the increased cost is negligible. In summary, this technical solution is a specific improvement made entirely based on and to solve the defects of the existing technology.

[0064] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0065] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0066] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0067] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A multi-media filter for purifying water, characterized by comprising: include: The filter contains an integrated device and a water and air distribution assembly arranged sequentially from top to bottom, and a main pipe communicating with the interior is located at the bottom of the filter. The integrated device includes an integrated component, which is slidably disposed inside the filter. The integrated component has a bowl-shaped structure that is larger at the top and smaller at the bottom. A central component coaxial with the integrated component is fixedly disposed inside the integrated component, and a screen fixedly disposed on the integrated component is sleeved on the central component. The integrated component has a first chamber and a second chamber. The first chamber is used for the flow of sewage during backwashing, and the second chamber is used for forward washing and water distribution. The filter is equipped with an inlet pipe and an outlet pipe. Multiple water distribution holes are opened on the lower circumferential surface of the integrated component. When the integrated component moves up to the highest height, it connects with the inlet pipe and performs water distribution and forward rinsing operations. When the integrated component moves down to the lowest height, it moves up and down within a set height to perform backwashing and collection operations. The integrated component and the screen are connected by two symmetrically distributed drop cylinders for the upper filter material to fall back after backwashing. The central component is equipped with a control unit for controlling the closing of the upper end of the drop cylinder. The control unit includes two cover plates that are hinged to the screen and correspond one-to-one with the discharge cylinder. The hinge point between the cover plate and the screen is far from the center piece. When backwashing is performed, the control unit controls the cover plate to block the opening at the top of the discharge cylinder. The control unit also includes a receiving cavity. The central component has two receiving cavities that are symmetrically distributed on the left and right. A gear with its axis extending back and forth is rotatably arranged in the receiving cavity. Two toothed plates that are distributed on the left and right and mesh with the gear are rotatably arranged in the receiving cavity. A connecting frame is fixedly installed on the toothed plate near the cover plate through a connecting block that passes through the central member. The end face of the connecting frame facing the cover plate is hinged to the upper end face of the cover plate through a spring rod. A connecting rod corresponding to each gear and with a vertical axis is provided through the central component. The connecting rod is connected to the tooth plate away from the corresponding cover plate. A fitting block is fixedly provided on the upper end face of the connecting rod. A return spring is provided between the fitting block and the central component. The water inlet pipe is fitted with a compression ring for squeezing the bonding block. During the upward movement of the integrated component, the compression ring squeezes the bonding block, causing the connecting rod to move downward relative to the integrated component.

2. A multi-media filter for purifying water as claimed in claim 1 wherein: The chamber includes an annular cavity. An annular cavity is formed on the upper end face of the inner cylinder of the integrated component. A sleeve is fixedly provided on the lower end face of the integrated component. A circular connecting cavity is formed on the lower end face of the integrated component and communicates with the sleeve. Two symmetrically distributed fan-shaped cavities are formed on the inner wall of the annular cavity and communicate with the connecting cavity. A rotating ring is rotatably sleeved on the central component, and vertical lifting rods are fixedly installed on both the front and rear sides of the rotating ring, with the lifting rods passing through the upper end of the filter.

3. A multi-media filter for purifying water according to claim 2, characterized in that: The water outlet pipe is L-shaped, with the vertical section of the water outlet pipe having the same axis as the sleeve and the two being joined together. The horizontal section of the water outlet pipe is a flexible hose.

4. The purified water producing multi-media filter of claim 1 wherein: The material discharge cylinder has isosceles triangular guide blocks fixedly installed on both the left and right ends of the middle sections of chamber one and chamber two. The guide blocks are inclined from the front and rear sides near the center of the material discharge cylinder to the position away from the material discharge cylinder.

5. The purified water producing multi-media filter of claim 1 wherein: The upper end of the central component is provided with a mating groove that is larger at the top and smaller at the bottom, and the upper diameter of the mating groove is the same as the diameter of the water inlet pipe. The second chamber includes a water distribution chamber. The integrated component has a water distribution chamber composed of an inclined annular chamber and a disc chamber. The integrated component has two connecting grooves distributed front and back. The central component has two curved grooves distributed front and back and connected to the docking groove. The connecting grooves connect the curved grooves and the water distribution chamber.

6. A multi-media filter for purifying water as claimed in claim 5 wherein: The water distribution holes are evenly distributed circumferentially and are opened on the lower circumferential surface and bottom plane of the integrated component. The water distribution holes are connected to the two chambers.

7. A multi-media filter for purifying water as claimed in claim 2 wherein: A fixing block is fixedly installed on the rotating ring, and a telescopic sleeve rod with a vertical axis is rotatably installed between the fixing block and the upper end of the filter. The telescopic section of the telescopic sleeve is fixedly fitted with an external tooth one, and the upper end of the central component is fixedly fitted with an external tooth two that meshes with the external tooth one.

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