A large flow self-cleaning screen filter

Abstract

The utility model provides a big flow self -cleaning formula net formula filter belongs to water purification treatment technical field, include: filter mechanism, cleaning mechanism and drive mechanism, filter mechanism includes casing and a plurality of independent filter screen cylinder, be provided with the baffle for fixed filter screen cylinder in casing, raw water is introduced into the casing through the water inlet, respectively enter filter screen cylinder through the water outlet on baffle, are led out from the water outlet after filter screen cylinder filtration, the dirt of cleaning mechanism's suction component is sucked and is discharged to filter screen cylinder inner wall, the flush component is washed to filter screen cylinder inner wall, drive mechanism drives cleaning mechanism rotation and moves up and down, a plurality of filter screen cylinders filter together, and the dirt of cleaning mechanism is cleaned respectively to a plurality of filter screen cylinder inner wall, keeps long -term efficient filtration and self -cleaning continuous work ability. The utility model provides big flow self -cleaning formula net formula filter has solved the problem that a plurality of filters parallel connection is not favorable to large -scale use in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of water purification technology, specifically to a high-flow-rate self-cleaning mesh filter. Background Technology

[0002] Drip irrigation, a water-saving irrigation technology in farmland water conservancy projects, precisely delivers water to the roots of crops through plastic pipes, where it drips out through micro-drip holes, achieving localized and efficient irrigation. Because drip irrigation delivers water through these micro-drip channels, there is a potential risk of scale buildup and clogging in the drippers. Therefore, strict requirements are placed on water quality treatment, necessitating the use of filtration equipment to prevent clogging. Thus, filters are an indispensable core component of drip irrigation projects, ensuring that the water meets the requirements for drip irrigation and maintaining a highly efficient and reliable water supply.

[0003] For drip irrigation projects, commonly used self-cleaning filters include mesh filters, disc filters, and sand filters. They all share the common characteristic of having a relatively small filtration capacity per unit and limited cleaning effectiveness. The filtration flow rate ranges from tens to hundreds of cubic meters per hour. For projects requiring larger flow rates, current technology and products utilize multiple filters connected in parallel.

[0004] However, the above-mentioned solutions have been hampered by factors such as high engineering costs, large land area required, inconvenient operation and management, high energy consumption and waste of water resources, which have hindered the large-scale application of water-saving drip irrigation projects. Utility Model Content

[0005] Therefore, the technical problem to be solved by this utility model is to overcome the problem that multiple filters connected in parallel in the prior art are not conducive to large-scale use, thereby providing a high-flow self-cleaning mesh filter.

[0006] To solve the above-mentioned technical problems, this utility model provides a high-flow self-cleaning mesh filter, comprising: a filtration mechanism, a cleaning mechanism, and a driving mechanism. The filtration mechanism includes a housing and multiple independent filter cylinders. A partition for fixing the filter cylinders is provided inside the housing. The partition has water distribution ports corresponding to each filter cylinder. The housing has an inlet and an outlet. The housing interior has a pre-filtration water distribution chamber communicating with the inlet and a post-filtration water collection chamber communicating with the outlet. The cleaning mechanism is located inside the filter cylinders. The device includes a suction assembly and a rinsing assembly. The suction assembly is used to suck up and discharge impurities from the inner wall surface of the filter cylinder, and the rinsing assembly is used to rinse the inner wall surface of the filter cylinder. A drive mechanism is mounted on the cleaning mechanism, which drives the cleaning mechanism to rotate and move up and down along the axial direction of the filter cylinder. A first limit switch and a second limit switch are sequentially mounted on the frame of the drive mechanism from top to bottom along the axial direction. A stroke control component is mounted on the drive shaft of the drive mechanism, and the stroke control component cooperates with the first limit switch and the second limit switch respectively.

[0007] During use, raw water is introduced into the pre-filter distribution chamber through the inlet of the housing, and then enters the filter chamber of multiple independent filter cylinders. The water to be filtered flows from the inside to the outside of the filter cylinders, and impurities in the water are intercepted on the inner wall surface of the filter cylinders. After filtration, the water collects in the post-filter collection chamber and is then led out from the outlet on the housing. As the filtration time increases, more and more impurities are intercepted by the filter cylinders. When a blockage pressure differential forms, the drive mechanism drives the cleaning mechanism to rotate forward and move downward. Simultaneously, the suction component is activated to suck up and discharge impurities from the inner wall surface of the filter cylinders. When the stroke control element triggers the second stroke... After closing, the second limit switch sends a position signal to the control device, the suction component stops, and the drive mechanism drives the cleaning mechanism to rotate in the opposite direction and move upward. Simultaneously, the flushing component starts, performing high-pressure flushing on the inner wall of the filter cylinder. When the limit control element triggers the first limit switch, the first limit switch sends a position signal to the control device, the drive mechanism and the flushing component stop, completing one cleaning cycle of the filter cylinder's inner wall. Multiple filter cylinders filter together, and the cleaning mechanism cleans the impurities from the inner walls of each filter cylinder separately, restoring filtration performance and maintaining long-term, high-efficiency filtration and self-cleaning continuous working capability. Furthermore, it has low cost, small footprint, and is easy to manage. The high-flow-rate self-cleaning mesh filter provided by this utility model solves the problem of existing technologies where multiple filters connected in parallel are not conducive to large-scale use.

[0008] Optionally, the suction assembly includes: a discharge chamber disposed on the housing, the discharge chamber having a discharge port and a discharge valve; a main discharge pipe disposed within the filter chamber of the filter cylinder, the first end of the main discharge pipe being connected to the drive shaft of the drive mechanism, the first end of the main discharge pipe extending into the discharge chamber, the first end of the main discharge pipe communicating with the discharge chamber through a first through hole, the second end of the main discharge pipe being closed, and multiple branch discharge pipes disposed on the main discharge pipe, the branch discharge pipes extending radially along the filter cylinder; and a suction nozzle disposed at the end of the branch discharge pipe near the inner wall of the filter cylinder, the suction port of the suction nozzle facing the inner wall of the filter cylinder. With the above setup, during filtration operation, the internal pressure of the housing is higher than atmospheric pressure. When the suction assembly is activated, the water in the drain chamber is quickly discharged through the drain valve, causing a significant drop in pressure within the drain chamber. The first through-hole connects the main drain pipe and the drain chamber. Through the conduction of the main drain pipe and the branch drain pipe, the pressure at the opening of the suction nozzle drops synchronously, creating a negative pressure relative to the inside of the housing, thereby generating suction force. This suction force passes through the filter cylinder, forming a reverse-flowing suction water flow that draws impurities adsorbed on the inner wall surface of the filter cylinder into the suction nozzle. The impurities then pass through the main drain pipe and the branch drain pipe back into the drain chamber, and are discharged from the drain outlet through the drain valve. The drive shaft of the drive mechanism drives the suction nozzle on the branch drain pipe to rotate downwards through the main suction pipe, forming a spiral downward scanning trajectory, thus achieving a complete scanning and cleaning of the inner wall surface of the filter cylinder.

[0009] Optionally, there is a gap of 3 mm between the suction port of the suction nozzle and the inner wall surface of the filter cylinder. This design ensures that when the suction assembly rotates and moves axially up and down, the suction nozzle will not rub against the inner surface of the filter cylinder nor move away from the filter screen, thus maximizing the suction capacity of the filter cylinder and providing sufficient suction power.

[0010] Optionally, the flushing assembly includes: a flushing water chamber disposed above the drain chamber, the flushing water chamber having a flushing water inlet; a flushing main pipe disposed inside the filter cylinder, the second end of the flushing main pipe being connected to the drive shaft of the drive mechanism, the second end of the flushing main pipe extending into the flushing water chamber, the second end of the flushing main pipe communicating with the flushing water chamber through a second through hole, the first end of the flushing main pipe being closed, and multiple flushing branch pipes disposed on the flushing main pipe; and nozzles disposed at the ends of the flushing branch pipes near the inner wall of the filter cylinder. With the above configuration, high-pressure water is delivered to the flushing water chamber through the flushing water inlet, enters the flushing main pipe through the second through hole, flows to the flushing branch pipes, and is sprayed at high speed through the nozzles to flush the corresponding inner wall of the filter cylinder. The drive shaft of the drive mechanism drives the nozzles on the flushing branch pipes to rotate upwards through the flushing main pipe, forming a spiral upward scanning trajectory, causing the flushing water to be sprayed onto the entire inner wall surface of the filter cylinder for flushing.

[0011] Optionally, a post-filter water collection chamber is formed between the housing and the filter screen cylinder, and a flushing pump is provided at the flushing water inlet, with the inlet pipe of the flushing pump connected to the post-filter water collection chamber. With this configuration, the flushing pump draws water from the post-filter water collection chamber, pressurizes it, and then delivers it from the flushing water inlet to the flushing water chamber, providing a high-pressure water flow to achieve high-pressure flushing and improve the cleaning effect.

[0012] Optionally, the flushing main pipe is coaxially arranged inside the sewage main pipe, and the flushing main pipe is fixedly connected to the sewage main pipe. The first end of the flushing main pipe extends out of the sewage main pipe and is connected to the drive shaft of the drive mechanism. The flushing branch pipe is coaxially arranged inside the sewage branch pipe, and the nozzle is arranged inside the suction nozzle. With the above arrangement, the flushing main pipe, flushing branch pipe, and nozzle are coaxially sleeved inside the sewage main pipe, sewage branch pipe, and suction nozzle. The suction assembly and flushing assembly are axially continuous, and the internal pipes are not interconnected. The sewage flows from bottom to top through the suction and sewage discharge channel, and the flushing water flows from top to bottom through the flushing channel. The flushing main pipe is fixedly connected to the sewage main pipe, and the drive mechanism can drive the flushing main pipe to rotate synchronously with the sewage main pipe. The structure is simplified and highly integrated, which can reduce the space occupied by the cleaning mechanism.

[0013] Optionally, the frame of the drive mechanism is positioned above the flushing water chamber, and the drive shaft of the drive mechanism extends into the flushing water chamber. The drive shaft is connected to the flushing main pipe via a coupling. A sealing upper sleeve is provided at the first end of the flushing water chamber for the drive shaft to pass through, and a sealing lower sleeve is provided at the second end of the flushing water chamber for the flushing main pipe to pass through. Through this arrangement, the sealing upper and lower sleeves achieve a sliding seal, preventing leakage from the flushing water chamber.

[0014] Optionally, a fixed upper sleeve is provided at the first end of the filter cylinder, and the fixed upper sleeve is connected to the housing through an isolation cover plate. The sewage discharge chamber is located above the isolation cover plate, and the sewage main pipe is slidably sealed to the isolation cover plate. With the above arrangement, the isolation cover plate places the sewage discharge chamber outside the housing, reducing the impact of the sewage discharge chamber on the filter.

[0015] Optionally, a fixed lower sleeve is provided at the second end of the filter cylinder, the fixed lower sleeve is fixedly connected to the housing, and a positioning hole is provided on the fixed lower sleeve. A positioning shaft is provided at the second end of the cleaning mechanism, and the positioning shaft is rotatably disposed in the positioning hole. With the above arrangement, the positioning hole on the fixed lower sleeve cooperates with the positioning shaft on the cleaning mechanism to achieve a positioning and guiding function for the rotational and vertical movement of the cleaning mechanism.

[0016] Optionally, the driving mechanism includes a driving device and a driving shaft. The driving shaft includes a screw portion and a sliding portion. A first end of the screw portion is connected to the driving device, and a second end of the screw portion is connected to the cleaning mechanism via the sliding portion. With the above configuration, when the driving mechanism drives the cleaning mechanism to rotate, the screw portion of the driving shaft enables simultaneous rotation and up-and-down movement, while the sliding portion of the driving shaft facilitates sliding sealing. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of one embodiment of the high-flow self-cleaning mesh filter provided in this utility model.

[0019] Figure 2 for Figure 1 A schematic diagram showing the removal of the housing from the middle filter;

[0020] Figure 3 for Figure 1 A schematic diagram of the suction component in the middle;

[0021] Figure 4 for Figure 1 A schematic diagram of the rinsing process of the intermediate rinsing assembly;

[0022] Figure 5 for Figure 1 A schematic diagram of a cleaning facility;

[0023] Figure 6 A partial cross-sectional schematic diagram of body 5;

[0024] Figure 7 for Figure 1 A partial cross-sectional schematic diagram of the assembly of the cleaning mechanism and filter cylinder;

[0025] Figure 8 for Figure 1 A partial cross-sectional view of the filter cylinder;

[0026] Figure 9 for Figure 8 A schematic diagram of the fixed lower sleeve.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Housing; 11. Inlet; 12. Outlet; 13. Partition; 2. Filter screen cylinder; 21. Upper fixed sleeve; 22. Lower fixed sleeve; 221. Positioning hole; 3. Sewage suction assembly; 31. Sewage discharge chamber; 32. Sewage discharge port; 33. Sewage discharge valve; 34. Main sewage discharge pipe; 35. First through hole; 36. Branch sewage discharge pipe; 37. Suction nozzle; 4. Flushing assembly; 41. Flushing water chamber; 42. Flushing water inlet; 43. Main flushing pipe; 44. Second through hole; 45. Branch flushing pipe; 46. Nozzle; 5. Drive mechanism; 51. Drive device; 52. Drive shaft; 521. Screw part; 522. Sliding part; 53. Frame; 54. First limit switch; 55. Second limit switch; 56. Stroke control component; 6. Flushing pump; 7. Isolation cover plate; 8. Positioning shaft. Detailed Implementation

[0029] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and 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 of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0033] This embodiment provides a structure for a high-flow-rate self-cleaning mesh filter capable of automatically cleaning the filter element, used for water filtration.

[0034] like Figure 1 The illustration shows a specific implementation of a high-flow-rate self-cleaning mesh filter provided in this embodiment, comprising: a filtration mechanism, a cleaning mechanism, and a drive mechanism 5. The filtration mechanism includes a housing 1 and multiple independent filter cylinders 2. A partition 13 for fixing the filter cylinders 2 is provided inside the housing 1. The partition 13 has water distribution ports corresponding to each filter cylinder 2. The housing 1 has an inlet 11 and an outlet 12. The housing 1 has a pre-filtration water distribution chamber communicating with the inlet 11 and a post-filtration water collection chamber communicating with the outlet 12. The cleaning mechanism is disposed inside the filter cylinders 2 and includes... The filter cylinder 2 is equipped with a suction assembly 3 and a rinsing assembly 4. The suction assembly 3 is used to suck up and discharge impurities from the inner wall surface of the filter cylinder 2, and the rinsing assembly 4 is used to rinse the inner wall surface of the filter cylinder 2. The driving mechanism 5 is mounted on the cleaning mechanism and drives the cleaning mechanism to rotate and move up and down along the axial direction of the filter cylinder 2. The frame 53 of the driving mechanism 5 is provided with a first limit switch 54 and a second limit switch 55 arranged sequentially from top to bottom along the axial direction. The drive shaft 52 of the driving mechanism 5 is provided with a stroke control element 56, which cooperates with the first limit switch 54 and the second limit switch 55 respectively.

[0035] In use, raw water is introduced into the pre-filter water distribution chamber through the inlet 11 of the housing 1, and then enters the independent filter chamber of the filter cylinder 2 through the water distribution port on the partition 13. The water to be filtered flows from the inside to the outside of the filter cylinder 2, and impurities in the water are intercepted on the inner wall surface of the filter cylinder 2. After being filtered by the filter cylinder 2, the water gathers in the post-filter water collection chamber and is then led out from the outlet 12 on the housing 1. As the filtration time increases, the filter cylinder 2 intercepts more and more impurities. When a blockage pressure difference is formed, the drive mechanism 5 drives the cleaning mechanism to rotate forward and move downward. At the same time, the suction component 3 is activated to suck up and discharge the impurities on the inner wall surface of the filter cylinder 2. When the stroke control component 56... After the second limit switch 55 is triggered, it sends a position signal to the control device, the suction assembly 3 shuts down, and the drive mechanism 5 drives the cleaning mechanism to rotate in the opposite direction and move upward. Simultaneously, the flushing assembly 4 starts, performing high-pressure flushing on the inner wall of the filter cylinder 2. When the stroke control element 56 triggers the first limit switch 54, it sends a position signal to the control device, and the drive mechanism 5 and the flushing assembly 4 shut down, completing one cleaning of the inner wall of the filter cylinder 2. Multiple filter cylinders 2 filter together, and the cleaning mechanism cleans the impurities on the inner walls of each filter cylinder 2 separately, restoring filtration performance and maintaining long-term, high-efficiency filtration and self-cleaning continuous working capability. The high-flow self-cleaning mesh filter provided in this embodiment solves the problem that multiple filters connected in parallel are not conducive to large-scale use in the prior art.

[0036] It should be noted that the high-flow self-cleaning mesh filter provided in this embodiment also includes a control device. A differential pressure sensor is installed inside the housing 1. The control device is electrically connected to the drive mechanism 5, the cleaning mechanism, the first limit switch 54, the second limit switch 55, and the differential pressure sensor.

[0037] Specifically, in this embodiment, the high-flow self-cleaning mesh filter has a filter cylinder 2 made of composite filter mesh.

[0038] like Figure 1-3As shown, in the self-cleaning filter provided in this embodiment, the suction assembly 3 includes: a drain chamber 31, disposed on the housing 1, with a drain port 32 and a drain valve 33 at the drain port 32; a main drain pipe 34, disposed inside the filter chamber of the filter cylinder 2, with its first end connected to the drive shaft 52 of the drive mechanism 5, extending into the drain chamber 31, communicating with the drain chamber 31 through a first through hole 35, and its second end being closed; a plurality of branch drain pipes 36 disposed on the main drain pipe 34, extending radially along the filter cylinder 2; and a suction nozzle 37 disposed at the end of the branch drain pipe 36 near the inner wall of the filter cylinder 2, with the suction port of the suction nozzle 37 facing the inner wall of the filter cylinder 2. During filtration operation, the internal pressure of the housing 1 is higher than atmospheric pressure. When the suction assembly 3 is activated, the water in the drain chamber 31 is quickly discharged through the drain valve 33, causing a significant drop in pressure within the drain chamber 31. The first through hole 35 connects the main drain pipe 34 and the drain chamber 31. Through the conduction of the main drain pipe 34 and the branch drain pipe 36, the pressure at the opening of the suction nozzle 37 drops synchronously, creating a negative pressure relative to the inside of the housing 1, thereby generating suction force. This suction force penetrates through the... The filter cylinder 2 forms a reverse-flow suction water flow, which draws impurities adsorbed on the inner wall surface of the filter cylinder 2 into the suction nozzle 37. The impurities then pass through the main drain pipe 34 and the branch drain pipe 36 into the drain chamber 31, and are discharged from the drain outlet 32 ​​through the drain valve 33. The drive shaft 52 of the drive mechanism 5 drives the suction nozzle 37 on the branch drain pipe to rotate downward through the main suction pipe, forming a spiral downward scanning trajectory, thereby achieving a complete scanning and cleaning of the inner wall surface of the filter cylinder 2.

[0039] like Figure 1-3 As shown, in the self-cleaning filter provided in this embodiment, there is a gap of 3 mm between the suction port of the suction nozzle 37 and the inner wall surface of the filter cylinder 2. This gap ensures that when the suction assembly 3 rotates and moves axially up and down, the suction nozzle 37 will neither rub against the inner surface of the filter cylinder 2 nor move away from the inner surface of the filter cylinder 2, thereby ensuring that the suction capacity is maximized and sufficient for the filter cylinder 2. Alternatively, as an alternative implementation, the gap between the suction nozzle 37 and the inner wall surface of the filter cylinder 2 can be set to other values ​​according to design requirements.

[0040] like Figure 1 , Figure 2 , Figure 4As shown, in the self-cleaning filter provided in this embodiment, the rinsing assembly 4 includes: a rinsing water chamber 41, disposed above the sewage discharge chamber 31, the rinsing water chamber 41 having a rinsing water inlet; a rinsing main pipe 43, disposed inside the filter cylinder 2, the second end of the rinsing main pipe 43 being connected to the drive shaft 52 of the drive mechanism 5, the second end of the rinsing main pipe 43 extending into the rinsing water chamber 41, the second end of the rinsing main pipe 43 communicating with the rinsing water chamber 41 through a second through hole 44, the first end of the rinsing main pipe 43 being closed, and a plurality of rinsing branch pipes 45 being disposed on the rinsing main pipe 43; and a nozzle 46, disposed at one end of the rinsing branch pipe 45 near the inner wall of the filter cylinder 2. High-pressure water is delivered to the flushing water chamber 41 through the flushing water inlet, enters the flushing main pipe 43 through the second through hole 44, flows to the flushing branch pipe 45, and is sprayed at high speed through the nozzle 46 to flush the inner wall of the corresponding filter screen cylinder 2. The drive shaft 52 of the drive mechanism 5 drives the nozzle 46 on the flushing branch pipe 45 to rotate upward through the flushing main pipe 43, forming a spiral upward scanning trajectory, so that the flushing water is sprayed onto the entire inner wall surface of the filter screen cylinder 2 for flushing.

[0041] like Figure 1 As shown, in the self-cleaning filter provided in this embodiment, a post-filtration water collection chamber is formed between the housing 1 and the filter cylinder 2. A flushing pump 6 is provided at the flushing water inlet, and the inlet pipe of the flushing pump 6 is connected to the post-filtration water collection chamber. The flushing pump 6 draws water from the post-filtration water collection chamber, pressurizes it, and delivers it from the flushing water inlet 42 to the flushing water chamber 41, providing a high-pressure water flow to achieve high-pressure flushing and improve the cleaning effect. Alternatively, as an alternative embodiment, the flushing pump 6 can also draw water from other water supply equipment.

[0042] like Figure 1 , Figure 2 , Figure 5 , Figure 6As shown, in the self-cleaning filter provided in this embodiment, the main flushing pipe 43 is coaxially arranged inside the main drain pipe 34. The main flushing pipe 43 is fixedly connected to the main drain pipe 34. The first end of the main flushing pipe 43 extends out of the main drain pipe 34 and is connected to the drive shaft 52 of the drive mechanism 5. The flushing branch pipe 45 is coaxially arranged inside the main drain pipe 36. The nozzle 46 is arranged inside the suction nozzle 37. The main flushing pipe 43, the flushing branch pipe 45, and the nozzle 46 are coaxially sleeved inside the main drain pipe, the main drain pipe 36, and the suction nozzle 37. The suction assembly 3 and the flushing assembly 4 are axially continuous, and their internal pipes are not interconnected. The suction wastewater flows from bottom to top through the suction and discharge channels, and the flushing water flows from top to bottom through the flushing channels. The main flushing pipe is fixedly connected to the main drain pipe. The drive mechanism 5 can drive the main flushing pipe 43 to drive the main drain pipe 34 to rotate synchronously. The structure is simplified and highly integrated, which can reduce the space occupied by the cleaning mechanism. Alternatively, as an alternative implementation, the flushing assembly 4 is arranged side by side with the suction assembly 3.

[0043] like Figure 1 , Figure 2 As shown, in the self-cleaning filter provided in this embodiment, the frame 53 of the drive mechanism 5 is disposed above the flushing water chamber 41, and the drive shaft 52 of the drive mechanism 5 extends into the flushing water chamber 41. The drive shaft 52 is connected to the flushing main pipe 43 via a coupling. A sealing upper sleeve for the drive shaft 52 to pass through is provided at the first end of the flushing water chamber 41, and a sealing lower sleeve for the flushing main pipe 43 to pass through is provided at the second end of the flushing water chamber 41. The sealing upper sleeve and the sealing lower sleeve achieve a sliding seal to prevent leakage from the flushing water chamber 41.

[0044] like Figure 1 , Figure 2 As shown, in the self-cleaning filter provided in this embodiment, a fixed upper sleeve 21 is provided at the first end of the filter cylinder 2. The fixed upper sleeve 21 is connected to the housing 1 through an isolation cover plate 7. The sewage discharge chamber 31 is located above the isolation cover plate 7, and the sewage discharge main pipe 34 is slidably sealed with the isolation cover plate 7. The isolation cover plate 7 places the sewage discharge chamber 31 outside the housing 1, reducing the impact of the sewage discharge chamber 31 on the filter.

[0045] like Figure 1 , Figure 2 , Figure 7 , Figure 8 , Figure 9As shown, in the self-cleaning filter provided in this embodiment, a fixed lower sleeve 22 is provided at the second end of the filter cylinder 2. The fixed lower sleeve 22 is fixedly connected to the housing 1. A positioning hole 221 is provided on the fixed lower sleeve 22. A positioning shaft 8 is provided at the second end of the cleaning mechanism. The positioning shaft 8 is rotatably disposed in the positioning hole 221. The positioning hole 221 on the fixed lower sleeve 22 cooperates with the positioning shaft 8 on the cleaning mechanism to achieve a positioning and guiding function for the rotational and vertical movement of the cleaning mechanism.

[0046] like Figure 1 , Figure 2 As shown, in the self-cleaning filter provided in this embodiment, the driving mechanism 5 includes a driving device 51 and a driving shaft 52. The driving shaft 52 includes a screw portion 521 and a sliding portion 522. The first end of the screw portion 521 is connected to the driving device 51, and the second end of the screw portion 521 is connected to the cleaning mechanism through the sliding portion 522. With the above configuration, when the driving mechanism 5 drives the cleaning mechanism to rotate, the screw portion 521 of the driving shaft 52 enables simultaneous rotation and up-and-down movement, and the sliding portion 522 of the driving shaft 52 facilitates sliding sealing.

[0047] How to use:

[0048] like Figure 1 As shown, the high-flow self-cleaning mesh filter provided in this embodiment, during use, raw water is introduced into the pre-filtration water distribution chamber through the inlet 11 of the housing 1, and then enters the independent filtration chamber of the filter cylinder 2 through the water distribution port on the partition 13. The water to be filtered flows from the inside to the outside of the filter cylinder 2, and impurities in the water are intercepted on the inner wall surface of the filter cylinder 2. After being filtered by the filter cylinder 2, the water gathers in the post-filtration water collection chamber and is then led out from the outlet 12 on the housing 1. As the filtration time increases, the filter cylinder 2 intercepts more and more impurities. When a blockage pressure difference is formed, the drive mechanism 5 drives the cleaning mechanism to rotate forward and move downward. At the same time, the suction component 3 is activated. The filter cylinder 2's inner wall surface is sucked up and discharged. When the stroke control component 56 triggers the second stroke switch 55, the second stroke switch 55 sends a position signal to the control device, the suction component 3 shuts down, and the drive mechanism 5 drives the cleaning mechanism to rotate in the opposite direction and move upward. At the same time, the flushing component 4 starts to perform high-pressure flushing on the inner wall of the filter cylinder 2. When the stroke control component 56 triggers the first stroke switch 54, the first stroke switch 54 sends a position signal to the control device, the drive mechanism 5 and the flushing component 4 shut down, completing one cleaning of the inner wall of the filter cylinder 2. The drive mechanism 5 and the cleaning mechanism then standby, ready for the next cleaning.

[0049] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A high-flow-rate self-cleaning mesh filter, characterized in that, include: The filtration mechanism includes a housing (1) and a plurality of independent filter cylinders (2). The housing (1) is provided with a partition (13) for fixing the filter cylinders (2). The partition (13) is provided with a water distribution port corresponding to each filter cylinder (2). The housing (1) is provided with an inlet (11) and an outlet (12). The housing (1) has a pre-filtration water distribution chamber communicating with the inlet (11) and a post-filtration water collection chamber communicating with the outlet (12). A cleaning mechanism is provided inside the filter cylinder (2). The cleaning mechanism includes a suction component (3) and a rinsing component (4). The suction component (3) is used to suck up and discharge impurities from the inner wall surface of the filter cylinder (2). The rinsing component (4) is used to rinse the inner wall surface of the filter cylinder (2). A drive mechanism (5) is provided on the cleaning mechanism. The drive mechanism (5) drives the cleaning mechanism to rotate and move up and down along the axial direction of the filter cylinder (2). A first limit switch (54) and a second limit switch (55) are arranged sequentially from top to bottom along the axial direction on the frame (53) of the drive mechanism (5). A stroke control component (56) is provided on the drive shaft (52) of the drive mechanism (5). The stroke control component (56) cooperates with the first limit switch (54) and the second limit switch (55) respectively. The suction assembly (3) includes: a drain chamber (31), a drain manifold (34), and a suction nozzle (37). The drain chamber (31) is disposed on the housing (1), and a drain outlet (32) is provided on the drain chamber (31). A drain valve (33) is provided at the drain outlet (32). The drain manifold (34) is disposed in the filter chamber of the filter screen cylinder (2). The first end of the drain manifold (34) is connected to the drive shaft (52) of the drive mechanism (5). The first end of the drain manifold (34) extends to the drain outlet. Inside the sewage chamber (31), the first end of the main sewage pipe (34) is connected to the sewage chamber (31) through the first through hole (35), the second end of the main sewage pipe (34) is closed, and multiple sewage branch pipes (36) are provided on the main sewage pipe (34). The sewage branch pipes (36) extend radially along the filter screen cylinder (2). The suction nozzle (37) is provided at one end of the sewage branch pipe (36) near the inner wall of the filter screen cylinder (2), and the suction port of the suction nozzle (37) is set facing the inner wall of the filter screen cylinder (2). The flushing assembly (4) includes: a flushing water chamber (41), a flushing main pipe (43), and a nozzle (46). The flushing water chamber (41) is located above the sewage discharge chamber (31) and has a flushing water inlet. The flushing main pipe (43) is located inside the filter screen cylinder (2). The second end of the flushing main pipe (43) is connected to the drive shaft (52) of the drive mechanism (5). The second end of the flushing main pipe (43) extends into the flushing water chamber (41). The second end of the flushing main pipe (43) communicates with the flushing water chamber (41) through a second through hole (44). The first end of the flushing main pipe (43) is closed. Multiple flushing branch pipes (45) are provided on the flushing main pipe (43). The nozzle (46) is located at one end of the flushing branch pipe (45) near the inner wall of the filter screen cylinder (2). The flushing main pipe (43) is coaxially arranged inside the sewage main pipe (34). The flushing main pipe (43) is fixedly connected to the sewage main pipe (34). The first end of the flushing main pipe (43) extends out of the sewage main pipe (34) and is connected to the drive shaft (52) of the drive mechanism (5). The flushing branch pipe (45) is coaxially arranged inside the sewage branch pipe (36). The nozzle (46) is arranged inside the suction nozzle (37).

2. The high-flow-rate self-cleaning mesh filter according to claim 1, characterized in that, There is a gap of 3 mm between the suction port of the suction nozzle (37) and the inner wall surface of the filter cylinder (2).

3. The high-flow self-cleaning mesh filter according to claim 1, characterized in that, A post-filter water collection chamber is formed between the housing (1) and the filter screen cylinder (2). A flushing pump (6) is provided at the flushing water inlet, and the inlet pipe of the flushing pump (6) is connected to the post-filter water collection chamber.

4. The high-flow-rate self-cleaning mesh filter according to claim 3, characterized in that, The frame (53) of the drive mechanism (5) is disposed above the flushing water chamber (41), and the drive shaft (52) of the drive mechanism (5) extends into the flushing water chamber (41). The drive shaft (52) is connected to the flushing manifold (43) via a coupling. The first end of the flushing water chamber (41) is provided with a sealing upper sleeve for the drive shaft (52) to pass through, and the second end of the flushing water chamber (41) is provided with a sealing lower sleeve for the flushing main pipe (43) to pass through.

5. The high-flow self-cleaning mesh filter according to claim 3, characterized in that, The first end of the filter cylinder (2) is provided with a fixed upper sleeve (21), which is connected to the housing (1) through an isolation cover plate (7). The sewage discharge chamber (31) is located above the isolation cover plate (7), and the sewage discharge main pipe (34) is slidably sealed with the isolation cover plate (7).

6. The high-flow-rate self-cleaning mesh filter according to claim 4, characterized in that, The second end of the filter cylinder (2) is provided with a fixed lower sleeve (22), which is fixedly connected to the housing (1). The fixed lower sleeve (22) is provided with a positioning hole (221), and the second end of the cleaning mechanism is provided with a positioning shaft (8), which is rotatably disposed in the positioning hole (221).

7. The high-flow-rate self-cleaning mesh filter according to claim 3 or 6, characterized in that, The drive mechanism (5) includes a drive device (51) and a drive shaft (52). The drive shaft (52) includes a screw portion (521) and a sliding portion (522). The first end of the screw portion (521) is connected to the drive device (51), and the second end of the screw portion (521) is connected to the cleaning mechanism through the sliding portion (522).

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