Multi-layer composite filter screen sewage filtering device for water purifier

Abstract

The utility model discloses a pure water machine multilayer composite filter screen sewage filtering device, including the shell body with axial containing space, the bottom end of shell body is distributed with support leg in the circumference, the top of shell body is equipped with detachable sealing cover, is provided with servo motor on the sealing cover, the shell body is equipped with the through sewage passage in the bottom center area, and the first axial position of shell body lateral wall is equipped with the extension liquid inlet, and is equipped with liquid outlet interface in the lateral wall second axial position relative to the first axial position, and the inside containing space of shell body is coaxially provided with modular multilayer filter unit, and multilayer filter unit includes at least three levels of impurity filter structure that stacks arrangement in turn along the fluid flow direction, the utility model discloses through dynamic cleaning and multilayer filter design, high -efficiently removes sewage impurity and automatically cleans filter structure, improves the efficiency, and the stability of filter cartridge is enhanced to plug -in limit and permanent magnet connection, and the cleaning flexibility and maintenance convenience of telescopic structure and quick -release structure are improved.

Description

Technical Field

[0001] This utility model relates to the field of pure water machines, and in particular to a multi-layer composite filter wastewater filtration device for pure water machines. Background Technology

[0002] Pure water machines remove impurities, ions, microorganisms, and organic matter from water through multi-stage filtration (such as PP cotton, activated carbon, RO reverse osmosis membrane, etc.) to produce high-purity sterile water, which is widely used in laboratories, medical and pharmaceutical, electronics manufacturing, food and beverage and other fields.

[0003] In the current technology, the automatic cleaning function of water purifiers is not perfect. They usually rely on manual periodic disassembly and cleaning of the filter layer. This maintenance method not only increases the cost of use and workload, but may also affect the filtration effect due to untimely or incomplete cleaning. In addition, the disassembly and assembly process of existing filters is relatively cumbersome and often requires the use of special tools, which reduces the ease of operation of the equipment. Utility Model Content

[0004] To overcome the problems of imperfect automatic cleaning function and cumbersome filter disassembly and assembly in water purifiers, which lead to inconvenience in operation and affect the filtration effect.

[0005] The technical solution of this utility model is as follows: a multi-layer composite filter wastewater filtration device for a pure water machine, comprising an outer shell with an axial accommodating space, supporting legs circumferentially distributed at the bottom end of the outer shell, a removable sealing cover at the top end of the outer shell, a servo motor mounted on the sealing cover, a through-flow sewage discharge channel in the central area of ​​the bottom of the outer shell, an extended liquid inlet at a first axial position on the side wall of the outer shell, and a liquid outlet at a second axial position on the side wall relative to the first axial position. A modular multi-layer filtration unit is coaxially arranged in the internal accommodating space of the outer shell. The multi-layer filtration unit includes at least three stages of impurity filtration structures stacked sequentially along the fluid flow direction. A dynamic cleaning mechanism is provided in the central axial area of ​​the multi-layer filtration unit. The input end of the dynamic cleaning mechanism is connected to the output shaft of the servo motor, and its execution end extends to the surface area of ​​the filtration structure of the multi-layer filtration unit. The dynamic cleaning mechanism responds to the start and stop commands of the servo motor to perform circumferential rotational motion, and achieves the peeling of attached impurities through the contact interaction between its execution end and the surface of the filtration structure.

[0006] Preferably, the multi-layer filter unit includes a receiving ring fixed to the inner wall of the outer shell, a radially extending connecting rod fixed to the inner wall of the receiving ring, a support plate provided on the connecting rod, and a multi-layer composite filter cartridge provided on the receiving ring through a limiting structure.

[0007] Preferably, the limiting structure includes an annular slot formed on the upper surface of the receiving ring, and an annular protrusion adapted to the annular slot is integrally provided at the lower end of the multi-layer composite filter cartridge, the annular protrusion being inserted into the annular slot.

[0008] Preferably, permanent magnets are provided on the contact surfaces of the annular protrusion and the annular slot, and the annular protrusion and the annular slot are magnetically connected.

[0009] Preferably, the dynamic cleaning mechanism includes a bearing housing mounted on a support plate, a main shaft rotatably connected to the output shaft of a servo motor within the bearing housing, a fixed seat fixed to the outer wall of the main shaft, a sleeve provided on the side end face of the fixed seat, a telescopic structure provided inside the sleeve, and bristles adapted to the inner wall of the outer shell provided at the output end of the telescopic structure via a quick-release mechanism.

[0010] Preferably, the telescopic structure includes a spring disposed on the bottom end face of the sleeve, the output end of the spring is provided with a movable rod, one end of the movable rod is provided with a groove, the other end of the movable rod is provided with a telescopic rod, the telescopic rod passes through the sleeve and the spring is sleeved on the outer wall of the telescopic rod.

[0011] Preferably, the quick-release structure includes a protrusion on the outer wall of the movable rod, a threaded hole in the protrusion extending into the groove, a screw threaded into the threaded hole, and a knob at one end of the screw. By rotating the knob, the screw is driven to clamp and fix the brush bristles.

[0012] The beneficial effects of this utility model are:

[0013] Through the design of dynamic cleaning mechanism and multi-layer filtration unit, it achieves efficient removal of impurities in sewage and automatic cleaning of the filtration structure, thereby improving filtration efficiency. At the same time, the plug-in limiting structure and permanent magnet magnetic connection enhance the stability of the filter cartridge, while the telescopic structure and quick-release structure improve the flexibility of cleaning and the convenience of maintenance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of one embodiment of the multi-layer composite filter screen wastewater filtration device for a pure water machine according to this utility model;

[0015] Figure 2 What is shown is Figure 1 Schematic diagram of the structure of a multi-layer filter unit;

[0016] Figure 3 What is shown is Figure 1 A schematic diagram of the dynamic cleaning mechanism in the middle;

[0017] Figure 4 What is shown is Figure 3 A schematic diagram of the telescopic structure;

[0018] Figure 5 What is shown is Figure 3 A schematic diagram of the quick-release structure.

[0019] Explanation of reference numerals in the attached drawings: 1. Outer shell; 2. Support leg; 3. Sealing cover; 4. Servo motor; 5. Drainage channel; 6. Liquid inlet; 7. Liquid outlet; 8. Receiving ring; 9. Connecting rod; 10. Support plate; 11. Layered composite filter cartridge; 12. Annular protrusion; 13. Annular slot; 14. Bearing seat; 15. Main shaft; 16. Fixed seat; 17. Sleeve; 18. Brush bristles; 19. Spring; 20. Movable rod; 21. Groove; 22. Telescopic rod; 23. Protrusion; 24. Screw; 25. Knob. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please see Figure 1 - Figure 5This utility model provides an embodiment of a multi-layer composite filter wastewater filtration device for a pure water machine, comprising an outer shell 1 with an axial accommodating space, supporting legs 2 circumferentially distributed at the bottom end of the outer shell 1, a removable sealing cover 3 at the top end of the outer shell 1, a servo motor 4 mounted on the sealing cover 3, a through-flow sewage discharge channel 5 in the central area of ​​the bottom of the outer shell 1, an extended liquid inlet 6 at a first axial position on the side wall of the outer shell 1, and an outlet 7 at a second axial position on the side wall relative to the first axial position. A modular multi-layer filtration unit is coaxially arranged within the internal accommodating space of the outer shell 1. The system includes at least three stages of impurity filtration structure stacked sequentially along the fluid flow direction. A dynamic cleaning mechanism is located in the central axial region of the multi-layer filtration unit. The input end of the dynamic cleaning mechanism is connected to the output shaft of the servo motor 4, and its execution end extends to the surface area of ​​the filtration structure of the multi-layer filtration unit. The dynamic cleaning mechanism responds to the start / stop commands of the servo motor 4 by performing circumferential rotational motion, achieving the removal of attached impurities through contact interaction between its execution end and the surface of the filtration structure. The outer casing 1 provides installation and operating space for the entire wastewater filtration device. Its axial accommodating space is used to accommodate components such as the multi-layer filtration unit and the dynamic cleaning mechanism. The sealing cover 3 also provides a platform for the installation of the servo motor 4. Its detachable design allows for convenient and quick operation when maintenance or replacement of the servo motor 4 is required. The servo motor 4 serves as the power source for the dynamic cleaning mechanism, enabling precise start-up or stop according to the control system's commands, and precise control of the rotational speed and direction of the output shaft. The sewage discharge channel 5 is used to promptly discharge impurities scraped off by the dynamic cleaning mechanism. The multi-layer filtration unit, through its multi-layer filtration design, can progressively remove impurities of different particle sizes and properties from wastewater, improving the filtration effect. The first-stage filtration structure is typically used to remove... In addition to removing larger particulate impurities such as silt and suspended solids from the wastewater, the subsequent filtration structure further removes finer impurities such as bacteria, viruses, and heavy metal ions, ensuring that the final purified water meets high water quality standards. When the servo motor 4 is started, the dynamic cleaning mechanism responds to the start and stop command of the servo motor 4 by performing a circumferential rotation. During the rotation, the actuator interacts with the surface of the filter structure through contact, and removes the impurities attached to the surface of the filter structure by friction and scraping. These removed impurities are discharged from the device through the sewage discharge channel 5, thereby keeping the surface of the filter structure clean.

[0022] Please see Figure 2In this embodiment, the multi-layer filter unit includes a receiving ring 8 fixed to the inner wall of the outer shell 1. A radially extending connecting rod 9 is fixed to the inner wall of the receiving ring 8. A support plate 10 is provided on the connecting rod 9. A multi-layer composite filter cartridge 11 is provided on the receiving ring 8 through a limiting structure. The limiting structure includes an annular slot 13 formed on the upper surface of the receiving ring 8. An annular protrusion 12 adapted to the annular slot is integrally provided at the lower end of the multi-layer composite filter cartridge 11. The annular protrusion 12 is inserted into the annular slot 13. Permanent magnets are provided on the contact surfaces of the annular protrusion 12 and the annular slot 13. The annular protrusion 12 and the annular slot 13 are magnetically connected. The receiving ring 8 provides a basic support platform for the installation of the multi-layer composite filter cartridge 11, playing a role in fixing and positioning, and ensuring the stability of the multi-layer composite filter cartridge 11 during the filtration process. The connecting rod 9 connects the receiving ring. The function of the support plate 10 and the support plate 8 is to stably support the support plate 10 in the central area of ​​the multi-layer filter unit. The support plate 10 provides an installation position for the bearing seat 14 component in the dynamic cleaning mechanism, ensuring that the dynamic cleaning mechanism can operate normally. The annular protrusion 12 is inserted into the annular slot 13. This plug-in limiting structure is simple and easy to operate, and can quickly realize the installation and disassembly of the multi-layer composite filter cartridge 11 and the receiving ring 8, which is convenient for cleaning, replacing or maintaining the filter cartridge. The magnetic connection of the permanent magnet further enhances the connection stability between the annular protrusion 12 and the annular slot 13. After the multi-layer composite filter cartridge 11 is installed in place, the magnetic connection can prevent the annular protrusion 12 from easily coming out of the annular slot 13, ensuring the reliability of the connection between the multi-layer composite filter cartridge 11 and the receiving ring 8, and avoiding the filter effect being affected by the loosening of the filter cartridge.

[0023] Please see Figure 3 - Figure 5In this embodiment, the dynamic cleaning mechanism includes a bearing seat 14 mounted on a support plate 10. A main shaft 15, rotatably connected to the output shaft of a servo motor 4, is rotatably connected within the bearing seat 14. A fixed seat 16 is fixedly connected to the outer wall of the main shaft 15. A sleeve 17 is provided on the side end face of the fixed seat 16. A telescopic structure is provided inside the sleeve 17. The output end of the telescopic structure is provided with bristles 18 adapted to the inner wall of the outer casing 1 via a quick-release mechanism. The telescopic structure includes a spring 19 mounted on the bottom end face of the sleeve 17. A movable rod 20 is provided at the output end of the spring 19. One end of the movable rod 20 has a groove 21, and the other end of the movable rod 20 has a telescopic rod 22. The telescopic rod 22 passes through the sleeve 17, and the spring 19 is sleeved on the outer wall of the telescopic rod 22. The quick-release structure includes a protrusion 23 on the outer wall of the movable rod 20. The protrusion 23 has a threaded hole that extends into the groove 21. A screw 24 is threaded into the threaded hole. One end of the screw 24 has a knob 25. By rotating the knob 25, the screw 24 is driven to clamp and fix the brush bristles 18. The bearing seat 14 reduces the rotation of the main shaft 15 through its internal bearing structure. The friction during the process allows the main shaft 15 to rotate smoothly. As the power transmission component of the dynamic cleaning mechanism, the main shaft 15 transmits the rotational motion generated by the servo motor 4 to subsequent components such as the fixed base 16, driving the entire dynamic cleaning mechanism to rotate circumferentially. The fixed base 16 is fixed to the outer wall of the main shaft 15 and rotates synchronously with the rotation of the main shaft 15. The sleeve 17 is located on the side end face of the fixed base 16, serving to accommodate and support the telescopic structure. The fixed base 16 transmits the rotational motion of the main shaft 15 to the sleeve 17, enabling the sleeve 17 to follow the rotational motion. The main shaft 15 rotates together, which in turn drives the telescopic structure and brush bristles 18 inside the sleeve 17 to rotate, thus cleaning the surface of the multi-layer composite filter cartridge 11. The spring 19 plays an elastic telescopic role. When the brush bristles 18 contact the surface of the multi-layer composite filter cartridge 11 and encounter resistance, the spring 19 is compressed, and the movable rod 20 and telescopic rod 22 retract into the sleeve 17. When the resistance decreases, the elastic restoring force of the spring 19 causes the movable rod 20 and telescopic rod 22 to extend outward, so that the brush bristles 18 can always maintain contact with the surface of the filter cartridge, ensuring the cleaning effect. This telescopic structure can adapt to filter cartridges of different diameters and cleaning needs at different positions, improving the flexibility and adaptability of cleaning. By rotating the knob 25, the screw 24 can be driven to move in the threaded hole, thereby clamping and fixing or loosening the brush bristles 18. When it is necessary to replace the brush bristles 18, simply rotate the knob 25 to loosen the screw 24, take out the old brush bristles 18, insert the new brush bristles 18, and rotate the knob 25 to clamp. This quick-release structure facilitates the replacement and maintenance of the bristles 18, improving the maintainability of the device.

[0024] Working principle: First, the sewage enters the device through the liquid inlet 6 on the side wall of the outer shell 1 and flows through the multi-layer filtration unit. The filtration structures of each level in the multi-layer filtration unit are stacked in sequence according to the fluid flow direction, removing impurities of different particle sizes and properties in the sewage step by step. The first-level filtration structure first intercepts and removes larger particulate impurities in the sewage, such as silt and suspended solids, providing preliminary purification for subsequent filtration.

[0025] As the wastewater continues to flow, it enters the subsequent filtration structure, which further removes finer impurities such as bacteria, viruses, and heavy metal ions, ensuring that the water quality is deeply purified. After multiple layers of filtration, pure water flows out from the liquid outlet 7 on the side wall of the outer shell 1, reaching a high water quality standard.

[0026] When cleaning is required, the servo motor 4 is precisely started according to the instructions of the control system, which drives the dynamic cleaning mechanism to start working. The dynamic cleaning mechanism transmits the rotational motion of the servo motor 4 to the telescopic structure and brush bristles 18 inside the sleeve 17 through the connection between the main shaft 15 and the fixed base 16. During the rotation, the brush bristles 18 interact with the surface of the multi-layer composite filter cartridge 11 in contact, and peel off the impurities attached to the surface of the filter cartridge through friction, scraping and other methods.

[0027] Meanwhile, the spring 19 in the telescopic structure plays an elastic telescopic role, ensuring that the bristles 18 can always maintain contact with the surface of the filter cartridge. No matter how the diameter or position of the filter cartridge changes, the cleaning effect can be guaranteed. The stripped impurities are carried into the sewage channel 5 with the flow of sewage and are finally discharged from the bottom of the device.

[0028] Through the above steps, dynamic cleaning and multi-layer filtration design efficiently remove wastewater impurities and automatically clean the filter structure, improving efficiency. The plug-in limit and permanent magnet connection enhance the stability of the filter cartridge, while the telescopic and quick-release structures improve cleaning flexibility and maintenance convenience. This solves the problems of imperfect automatic cleaning function and cumbersome filter screen disassembly and assembly in pure water machines, which lead to inconvenient operation and affect the filtration effect.

Claims

1. A multi-layer composite filter screen wastewater filtration device for a pure water machine, characterized in that: The outer shell (1) includes an axially accommodating space. Support legs (2) are distributed circumferentially at the bottom end of the outer shell (1). A removable sealing cover (3) is provided at the top of the outer shell (1). A servo motor (4) is provided on the sealing cover (3). A through-hole sewage channel (5) is provided in the central area of ​​the bottom of the outer shell (1). An extended liquid inlet (6) is provided at the first axial position of the side wall of the outer shell (1), and a liquid outlet (7) is provided at the second axial position of the side wall relative to the first axial position. A modular multi-layer filter unit is coaxially arranged in the internal accommodating space of the outer shell (1). The multi-layer filter unit includes at least three stages of impurity filtration structure stacked sequentially along the fluid flow direction. A dynamic cleaning mechanism is provided in the central axial area of ​​the multi-layer filter unit. The input end of the dynamic cleaning mechanism is connected to the output shaft of the servo motor (4), and its execution end extends to the surface area of ​​the filter structure of the multi-layer filter unit. The dynamic cleaning mechanism responds to the start and stop commands of the servo motor (4) to perform circumferential rotation, and removes attached impurities through contact interaction between its execution end and the surface of the filter structure.

2. The multi-layer composite filter wastewater filtration device for a pure water machine according to claim 1, characterized in that: The multi-layer filter unit includes a receiving ring (8) fixed to the inner wall of the outer shell (1), a radially extending connecting rod (9) fixed to the inner wall of the receiving ring (8), a support plate (10) provided on the connecting rod (9), and a multi-layer composite filter cartridge (11) provided on the receiving ring (8) through a limiting structure.

3. The multi-layer composite filter wastewater filtration device for a pure water machine according to claim 2, characterized in that: The limiting structure includes an annular slot (13) opened on the upper surface of the receiving ring (8), and an annular protrusion (12) adapted to the annular slot is integrally provided at the lower end of the multi-layer composite filter cartridge (11), and the annular protrusion (12) is inserted into the annular slot (13).

4. The multi-layer composite filter wastewater filtration device for a pure water machine according to claim 3, characterized in that: The contact surfaces of the annular protrusion (12) and the annular slot (13) are both provided with permanent magnets, and the annular protrusion (12) and the annular slot (13) are magnetically connected.

5. The multi-layer composite filter wastewater filtration device for a pure water machine according to claim 4, characterized in that: The dynamic cleaning mechanism includes a bearing seat (14) mounted on a support plate (10). A main shaft (15) connected to the output shaft of a servo motor (4) is rotatably connected inside the bearing seat (14). A fixed seat (16) is fixed to the outer wall of the main shaft (15). A sleeve (17) is provided on the side end face of the fixed seat (16). A telescopic structure is provided inside the sleeve (17). The output end of the telescopic structure is provided with bristles (18) that are adapted to the inner wall of the outer shell (1) through a quick-release structure.

6. The multi-layer composite filter wastewater filtration device for a pure water machine according to claim 5, characterized in that: The telescopic structure includes a spring (19) set on the bottom end face of the sleeve (17), a movable rod (20) is provided at the output end of the spring (19), a groove (21) is provided at one end of the movable rod (20), and a telescopic rod (22) is provided at the other end of the movable rod (20). The telescopic rod (22) passes through the sleeve (17) and the spring (19) is sleeved on the outer wall of the telescopic rod (22).

7. The multi-layer composite filter wastewater filtration device for a pure water machine according to claim 6, characterized in that: The quick-release structure includes a protrusion (23) on the outer wall of the movable rod (20), a threaded hole is provided in the protrusion (23) and extends into the groove (21), a screw (24) is threaded in the threaded hole, and a knob (25) is provided at one end of the screw (24). By rotating the knob (25), the screw (24) is driven to clamp and fix the brush bristles (18).

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