Spiral-flow type self-cleaning filtering device

Abstract

The invention relates to the technical field of filtering equipment, and provides a spiral-flow type self-cleaning filtering device which comprises a filtering barrel, a spiral-flow generator, a rotating main shaft, a rotating power generator, an electric valve and a pressure sensor, a filtering membrane is arranged inside the filtering cylinder body, and a water producing port is formed outside the filtering cylinder body; the rotational flow generator is arranged at the water inlet end and can rotate under the impact action of water flow; the rotating main shaft is arranged in the axial direction of the filtering barrel and connected with the rotational flow generator, and a cleaning brush is further arranged on the peripheral wall of the rotating main shaft; the rotary generator is arranged at the water inlet end, is in transmission connection with the main shaft and can rotate along with the rotating main shaft to generate electricity; the electric valve is electrically connected with the rotary generator; the pressure sensor is arranged in the filter cylinder and is electrically connected with the rotary generator; and the pressure sensor can detect pressure information in the filter cylinder body and regulate and control the opening and closing states of the electric valve according to the pressure information. The spiral-flow type self-cleaning filtering device is simple in structure, self-sufficient in energy and capable of achieving efficient self-cleaning without external power.

Description

Technical Field

[0001] This disclosure relates to the field of filtration equipment technology, and in particular to a cyclone self-cleaning filtration device. Background Technology

[0002] In traditional filters, contaminants gradually accumulate on the surface of the filter element (especially the membrane filter element) during use, leading to decreased filtration efficiency, reduced flow rate, and increased pressure differential. To address this issue, it is usually necessary to shut down the filter for backwashing or chemical cleaning to ensure the normal filtration performance of the filter element. However, this backwashing or chemical cleaning process is cumbersome and can temporarily affect the filter's normal filtration function.

[0003] Existing technologies also include some self-cleaning filters, such as: 1. Mechanical scraper filters, which use an external motor to drive brushes or scrapers to clean the inner wall of the filter element. However, they require an external power supply and control equipment, have a complex structure, high energy consumption, and increase the risk of failure in sealing and transmission; 2. Backwash filters, which periodically change the direction of water flow to flush away contaminants using reverse water flow. This method has limited cleaning power, is ineffective against highly adhesive impurities, and can cause water production interruptions.

[0004] Therefore, there is an urgent need in the market for a filter that can utilize the fluid's own energy to achieve efficient, automatic, and continuous cleaning. Summary of the Invention

[0005] This disclosure provides a cyclone self-cleaning filter device to solve the problem that existing filters cannot achieve self-powered cleaning or continuous self-cleaning.

[0006] The cyclone self-cleaning filter device provided in this embodiment includes a filter cylinder, a cyclone generator, a rotating main shaft, a rotary generator, an electric valve, and a pressure sensor. The filter cylinder has a water inlet at one end and a sewage outlet at the other end. A filter membrane is also installed inside the filter cylinder, and a water outlet is also provided on the outside of the filter cylinder. The vortex generator is located at the water inlet and is capable of rotating under the impact of water flow. The rotating main shaft is arranged along the axial direction of the filter cylinder and is connected to the cyclone generator. The outer peripheral wall of the rotating main shaft is also provided with a cleaning brush for scraping the inner surface of the filter membrane. The rotary generator is located at the water inlet and is connected to the main shaft drive, and can generate electricity by rotating with the main shaft. The electric valves are respectively installed at the sewage discharge end and the water production port, and are electrically connected to the rotary generator. The pressure sensor is disposed in the filter cylinder and is electrically connected to the rotary generator; The pressure sensor can detect the pressure information inside the filter cylinder and adjust the opening and closing state of the electric valve according to the pressure information.

[0007] In one embodiment, the filter membrane comprises a spiral wound membrane; Furthermore, the spiral wound membrane forms a corresponding filter cavity within the filter cylinder, with one end of the filter cavity connected to the water inlet and the other end connected to the sewage outlet.

[0008] In one embodiment, multiple cleaning brushes are provided on the outer periphery of the spindle; Furthermore, multiple cleaning brushes are spirally arranged around the outer periphery of the main shaft; Multiple cleaning brushes can rotate synchronously with the rotating main shaft and simultaneously scrape the inner surface of the filter membrane.

[0009] In one embodiment, the spiral winding direction of the plurality of cleaning brushes is matched with the rotation direction of the vortex generator and the rotating main shaft, so that the plurality of cleaning brushes can generate an axial force that pushes impurities toward the discharge end when rotating.

[0010] In one possible implementation, the swirling generator is an axial turbine or a slanted blade fan.

[0011] In one embodiment, the filter cylinder is further provided with an inlet end cap at the water inlet end; One end of the water inlet cap forms a water inlet, and the other end forms a fitting opening that wraps around the outer periphery of the vortex generator.

[0012] In one embodiment, the filter cylinder is further provided with a membrane fixing cover at the water inlet end; One side of the membrane fixing cover is fixedly connected to the water inlet end cover, and the other side is provided with a limiting slot for inserting and fixing the filter membrane.

[0013] In one embodiment, a drain end cover is further provided in the drain end of the filter cylinder; The two ends of the rotating main shaft are rotatably inserted into the water inlet end cover and the sewage outlet end cover via bearings.

[0014] In one embodiment, the rotary generator is a magnetic induction generator, and the magnetic induction generator has a generator rotor and a generator stator; The generator rotor is arranged along the same plane and is wound around the outer peripheral wall of the rotating main shaft. The generator stator is correspondingly arranged in the water inlet end cover and is arranged along the same plane as the generator rotor.

[0015] In one embodiment, the cyclone self-cleaning filter also includes a controller; The controller is electrically connected to the rotary generator, the pressure sensor and the electric valve respectively; The controller is equipped with an adjustment threshold; When the pressure value detected by the pressure sensor is less than the control threshold, the controller controls the electric valve in the water outlet to open and the electric valve in the sewage outlet to close. When the pressure value detected by the pressure sensor is greater than the control threshold, the controller controls the electric valve in the water outlet to close and the electric valve in the sewage outlet to open.

[0016] The technical solution provided in this disclosure has the following advantages compared with related technologies: (1) High efficiency self-cleaning without external power: The cleaning brush is driven by the inlet water energy of the raw water, which realizes true "self" cleaning without the need for external motors, pumps or complex control systems, saving energy and reducing consumption. (2) Strong cleaning power: In automatic cleaning mode, the cleaning brush provides high-speed and continuous physical scraping cleaning, which is better than simple backwashing. In normal filtration mode, the cleaning brush can maintain low-speed rotation and low-intensity daily cleaning. (3) Self-sufficient energy and intelligent operation: The rotary generator converts the redundant kinetic energy of the original water flow into electrical energy and supplies power to the pressure sensor and electric valve, forming a closed-loop energy and control system. It can automatically trigger the cleaning cycle according to the actual pollution situation (manifested as pressure change), realizing adaptive and intelligent operation management.

[0017] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0018] The above and other objects, features, and advantages of this disclosure will become readily apparent from the following detailed description of exemplary embodiments, taken in conjunction with the accompanying drawings. Several embodiments of this disclosure are illustrated in the drawings by way of example and not limitation, in which: In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0019] Figure 1 A cross-sectional view of a cyclone self-cleaning filter device provided in an embodiment of this disclosure is shown; Figure 2 An exploded view of the cyclone self-cleaning filter device provided in an embodiment of this disclosure is shown; Figure 3 This shows a first-view view of the water inlet end of the cyclone self-cleaning filter device provided in an embodiment of the present disclosure; Figure 4 A second perspective view of the water inlet end of the cyclone self-cleaning filter device provided in the embodiments of this disclosure is shown; Figure 5 A flowchart illustrating the operation of a cyclone self-cleaning filter device provided in an embodiment of this disclosure is shown.

[0020] The labels in the diagram are as follows: 1. Filter cylinder; 11. Filter membrane; 12. Product water outlet; 13. Inlet cap; 14. Drain cap; 15. Membrane fixing cap; 151. Limiting slot; 2. Swirl generator; 3. Rotating spindle; 31. Cleaning brush; 4. Rotary generator; 5. Electric valve; 6. Pressure sensor. Detailed Implementation

[0021] To make the objectives, features, and advantages of this disclosure more apparent and understandable, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0022] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0023] Combination Figure 1 and Figure 5 As shown, this embodiment of the present disclosure provides a cyclone self-cleaning filtration device, which includes a filter cylinder 1, a cyclone generator 2, a rotating main shaft 3, a rotary generator 4, an electric valve 5, and a pressure sensor 6. One end of the filter cylinder 1 has a water inlet and the other end has a sewage outlet. A filter membrane 11 is also disposed inside the filter cylinder 1, and a water outlet 12 is also provided on the outside of the filter cylinder 1. The cyclone generator 2 is disposed at the water inlet and is capable of rotating under the impact of water flow. The rotating main shaft 3 is arranged along the axial direction of the filter cylinder 1 and is connected to the cyclone generator 4. The generator 2 is connected, and the outer peripheral wall of the rotating main shaft 3 is also provided with a cleaning brush 31 for scraping the inner surface of the filter membrane 11; the rotary generator 4 is set at the water inlet end and is connected to the main shaft 3 for transmission, and can generate electricity as the rotating main shaft 3 rotates; the electric valve 5 is respectively set at the sewage outlet and the water outlet 12, and is electrically connected to the rotary generator 4; the pressure sensor 6 is set in the filter cylinder 1 and is electrically connected to the rotary generator 4; wherein, the pressure sensor 6 can detect the pressure information in the filter cylinder 1 and adjust the opening and closing state of the electric valve 5 according to the pressure information.

[0024] In practical use, this cyclone self-cleaning filter includes a normal filtration mode and an automatic cleaning mode. In normal filtration mode, raw water enters the filter cylinder 1 from the inlet. The incoming water impacts the cyclone generator 2, causing it to rotate at a low speed. This drives the rotating main shaft 3 and the cleaning brush 31 to rotate synchronously at a low speed, performing routine maintenance cleaning of the filter membrane 11. At this time, the electric valve 5 in the product outlet 12 is open, while the electric valve 5 in the drain outlet is closed. Most of the raw water passes through the filter membrane 11 to become filtered product water. Impurities are washed by the cleaning brush 31 and flushed to the collection area in the drain outlet. Simultaneously, the rotating generator 4 continuously generates electricity as the rotating main shaft 3 rotates, providing power or charging to the pressure sensor 6 and the electric valve 5. As the filter's service life increases, impurities accumulate on the inner surface of the filter membrane 11, causing the internal pressure of the filter membrane 11 to rise continuously. When the actual pressure detected by the pressure sensor 6 reaches the set threshold, the cyclone self-cleaning filter device can switch to automatic cleaning mode. At this time, the pressure sensor 6 can control the circuit to issue a command to switch the electric valve 5 in the drain end to the open state and the electric valve 5 in the product water outlet 12 to the closed state. At this time, the raw water can enter the filter cylinder 1 from the inlet end and flow directly and quickly along the axial direction of the filter cylinder 1 to the drain end. At this time, all the raw water becomes a high-speed flushing water flow and strongly impacts the cyclone. The flow generator 2 causes it to rotate at high speed, and the rotating main shaft 3 and the cleaning brush 31 rotate at high speed simultaneously, which vigorously scrubs the impurities attached to the inner surface of the filter membrane 11. At the same time, the impurities are carried out by the high-speed water flow and quickly discharged from the drain end. As the automatic cleaning mode continues, the internal pressure of the filter membrane 11 continues to decrease. When the pressure sensor 6 detects that the actual pressure is lower than the set threshold, the pressure sensor 6 can control the circuit to send a command to switch the electric valve 5 in the drain end to the closed state and switch the electric valve 5 in the water outlet 12 to the open state, so that the vortex self-cleaning filter device switches back to the normal filtration mode accordingly.

[0025] In summary, the cyclone self-cleaning filter device provided in this disclosure embodiment can achieve at least the following beneficial effects: (1) High efficiency self-cleaning without external power: The cleaning brush 31 is driven by the inlet water energy of the raw water, which realizes true "self" cleaning without the need for external motors, pumps or complex control systems, saving energy and reducing consumption. (2) Strong cleaning power: In automatic cleaning mode, the cleaning brush 31 provides high-speed and continuous physical scraping cleaning, which is better than simple backwashing. In normal filtration mode, the cleaning brush 31 can maintain low-speed rotation and low-intensity daily cleaning. (3) Self-sufficient energy and intelligent operation: The rotary generator 4 converts the redundant kinetic energy of the original water flow into electrical energy and supplies power to the pressure sensor 6 and the electric valve 5, forming a closed-loop energy and control system. It can automatically trigger the cleaning cycle according to the actual pollution situation (manifested as pressure change), realizing adaptive and intelligent operation management.

[0026] In one embodiment, the filter membrane 11 includes a spiral wound membrane; and the spiral wound membrane forms a filter cavity inside the filter cylinder 1, with one end of the filter cavity connected to the water inlet and the other end connected to the sewage outlet.

[0027] Specifically, in combination Figure 2 In further detail, the filter membrane 11 is configured as a spiral wound membrane and is fixedly inserted into the filter cylinder 1 along the axial direction. In this way, one end of the filter cavity formed by the spiral wound membrane can be connected to the water inlet end of the filter cylinder 1, and the other end can be connected to the sewage outlet end of the filter cylinder 1. Moreover, when the cyclone self-cleaning filter device is in normal filtration mode, the raw water enters the filter cavity of the spiral wound membrane and can undergo reverse osmosis filtration along the radial direction of the filter cylinder 1. Finally, the filtered clean water is obtained at the outer periphery of the spiral wound membrane, and the clean water can be directly discharged through the water outlet 12 at the periphery of the filter cylinder 1.

[0028] In one embodiment, multiple cleaning brushes 31 are provided on the outer periphery of the main shaft 3; and the multiple cleaning brushes 31 are spirally distributed on the outer periphery of the main shaft 3; the multiple cleaning brushes 31 can rotate synchronously with the rotating main shaft 3 and simultaneously scrape the inner surface of the filter membrane 11.

[0029] Specifically, in combination Figure 2 In further detail, the cleaning brush 31 can be, but is not limited to, a thin strip brush or a slatted scraper, etc., and multiple cleaning brushes 31 are arranged close together on the outer periphery of the main shaft 3 and spirally distributed. In this way, when multiple cleaning brushes 31 can rotate synchronously with the rotating main shaft 3, they can simultaneously scrape various parts of the inner surface of the filter membrane 11, ensuring the cleaning and impurity removal effect on the inner surface of the filter membrane 11.

[0030] In one embodiment, the spiral winding direction of the plurality of cleaning brushes 31 is matched with the rotation direction of the vortex generator 2 and the rotating main shaft 3, so that the plurality of cleaning brushes 31 can generate an axial force that pushes impurities toward the discharge end when rotating.

[0031] Specifically, in combination Figure 2To explain in more detail, the spiral winding direction of the multiple cleaning brushes 31 is matched with the rotation direction of the vortex generator 2 and the rotating main shaft 3. In this way, the multiple cleaning brushes 31 can be arranged close together to form a spiral "guide section", which can play a "spiral guide" role for the impurities scraped off. It can guide the impurities scraped off along the axial direction of the filter cylinder 1 towards the dirt collection area in the sewage discharge end, thereby preventing impurities from adhering to the inner surface of the filter membrane 11 again.

[0032] In one embodiment, the swirl generator 2 is an axial turbine or a slanted blade fan.

[0033] Specifically, in combination Figure 3 and Figure 4 In further detail, the vortex generator 2 is specifically configured as an axial turbine or a slanted blade fan, and multiple vortex generators 2 can be coaxially arranged at the water inlet end of the filter cylinder 1. In this way, multiple vortex generators 2 can generate better rotation under the impact of raw water, thereby driving the rotating main shaft 3 and the cleaning brush 31 to rotate at a higher speed in the automatic cleaning mode.

[0034] In one embodiment, the filter cylinder 1 is further provided with an inlet end cap 13 at the water inlet end; one end of the inlet end cap 13 forms a water inlet, and the other end forms a fitting opening that wraps around the outer periphery of the vortex generator 2.

[0035] Specifically, in combination Figure 2 and Figure 3 In further detail, an inlet cover 13 is provided at the water inlet end of the filter cylinder 1. The inlet cover 13 can be configured as a straight cylinder or a conical cylinder. In this way, the water inlet formed at one end of the inlet cover 13 is used to supply water flow, and the fitting opening formed at the other end of the inlet cover 13 can be wrapped around the outer periphery of the vortex generator 2. When the raw water flows through the inlet cover 13 to the vortex generator 2, it can fully and efficiently flush the vortex generator 2 and cause the vortex generator 2 to rotate.

[0036] In one embodiment, the filter cylinder 1 is further provided with a membrane fixing cover 15 at the water inlet end; one side of the membrane fixing cover 15 is fixedly connected to the water inlet end cover 13, and the other side is provided with a limiting slot 151 for inserting and fixing the filter membrane 11.

[0037] Specifically, in combination Figure 3In further detail, a membrane fixing cover 15 is provided at the water inlet end of the filter cylinder 1. The membrane fixing cover 15 can be configured as a plate cover that matches the shape of the water inlet end, and one side of the membrane fixing cover 15 is fixedly connected to the water inlet end cover 13, thus achieving the fixed installation of the membrane fixing cover 15 itself at the water inlet end. In addition, a limiting slot 151 for inserting and fixing the filter membrane 11 is provided on the other side of the water inlet end cover 13. The limiting slot 151 can be configured as an annular recessed slot, so that one end of the roll-type filter membrane 11 can be inserted into the limiting slot 151, thereby achieving the function of inserting and fixing the filter membrane 11.

[0038] In one embodiment, a drain end cover 14 is also provided in the drain end of the filter cylinder 1; the two ends of the rotating main shaft 3 are rotatably inserted into the water inlet end cover 13 and the drain end cover 14 through bearings.

[0039] Specifically, in combination Figure 2 In further detail, a drain end cover 14 is provided in the drain end of the filter cylinder 1, and the drain end cover 14 and the water inlet end cover 13 can be concentrically arranged along the axis of the filter cylinder 1. In this way, the two ends of the rotating main shaft 3 can be rotatably inserted into the water inlet end cover 13 and the drain end cover 14 through bearings, so as to achieve a low-resistance and low-friction rotatable installation of the rotating main shaft 3.

[0040] In one embodiment, the rotary generator 4 is a magnetic induction generator, and the magnetic induction generator has a generator rotor and a generator stator; the generator rotor is arranged along the same plane and is wound around the outer peripheral wall of the rotating main shaft 3, and the generator stator is correspondingly arranged in the water inlet end cover 13 and is arranged along the same plane as the generator rotor.

[0041] Specifically, the rotary generator 4 is a magnetic induction generator, and the generator rotor in the magnetic induction generator is arranged along the same plane and wound around the outer peripheral wall of the rotating main shaft 3. The generator stator is correspondingly arranged in the water inlet end cover and is arranged along the same plane as the generator rotor. In this way, when the rotating main shaft 3 rotates, it can synchronously drive the generator rotor to rotate relative to the generator rotor in the water inlet end cover 13, thereby generating electromagnetic induction between the two to make the rotary generator 4 generate electricity.

[0042] In one embodiment, the cyclone self-cleaning filter further includes a controller; the controller is electrically connected to the rotary generator 4, the pressure sensor 6, and the electric valve 5 respectively; the controller has an adjustment threshold; when the pressure value detected by the pressure sensor 6 is less than the adjustment threshold, the controller controls the electric valve 5 in the water outlet 12 to open and the electric valve 5 in the sewage outlet to close; when the pressure value detected by the pressure sensor 6 is greater than the adjustment threshold, the controller controls the electric valve 5 in the water outlet 12 to close and the electric valve 5 in the sewage outlet to open.

[0043] Specifically, the controller can be, but is not limited to, configured as a PLC (Programmable Logic Controller), and is electrically connected to the rotary generator 4, the pressure sensor 6, and the electric valve 5 respectively. When the pressure value detected by the pressure sensor 6 is less than the control threshold, the controller controls the electric valve 5 in the water outlet 12 to open and the electric valve 5 in the sewage outlet to close, so that the cyclone self-cleaning filter device switches to normal filtration mode; when the pressure value detected by the pressure sensor 6 is greater than the control threshold, the controller controls the electric valve 5 in the water outlet 12 to close and the electric valve 5 in the sewage outlet to open, so that the cyclone self-cleaning filter device switches to automatic cleaning mode.

[0044] The specific settings of the controller described above enable better automation and intelligent switching of the working state of the cyclone self-cleaning filter, allowing the cyclone self-cleaning filter to perform self-cleaning of the filter membrane 11 more timely and efficiently.

[0045] Furthermore, the terms "first" and "second" 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" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means two or more, unless otherwise explicitly specified.

[0046] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A cyclone self-cleaning filter device, characterized in that, include: The filter cylinder (1) has a water inlet at one end and a sewage outlet at the other end. The filter cylinder (1) is also equipped with a filter membrane (11) inside and a water outlet (12) is opened on the outside of the filter cylinder (1). A vortex generator (2) is installed at the water inlet and is able to rotate under the impact of water flow. Rotate the main shaft (3), which is arranged along the axial direction of the filter cylinder (1) and connected to the cyclone generator (2). The outer peripheral wall of the rotating main shaft (3) is also provided with a cleaning brush (31) for scraping the inner surface of the filter membrane (11). A rotary generator (4) is installed at the water inlet and is connected to the main shaft (3) for transmission, and can generate electricity by rotating with the rotating main shaft (3); Electric valves (5) are respectively installed at the sewage discharge end and the water production port (12), and are electrically connected to the rotary generator (4); A pressure sensor (6) is installed in the filter cylinder (1) and electrically connected to the rotary generator (4); The pressure sensor (6) can detect the pressure information inside the filter cylinder (1) and adjust the opening and closing state of the electric valve (5) according to the pressure information.

2. The cyclone self-cleaning filter device according to claim 1, characterized in that, The filter membrane (11) includes a spiral wound membrane; Furthermore, the spiral wound membrane forms a corresponding filter cavity within the filter cylinder (1), with one end of the filter cavity connected to the water inlet and the other end connected to the sewage outlet.

3. The cyclone self-cleaning filter device according to claim 1, characterized in that, Multiple cleaning brushes (31) are provided on the outer periphery of the main shaft (3); Furthermore, multiple cleaning brushes (31) are spirally arranged around the outer periphery of the main shaft (3); Multiple cleaning brushes (31) can rotate synchronously with the rotating spindle (3) and simultaneously scrape the inner surface of the filter membrane (11).

4. The cyclone self-cleaning filter device according to claim 3, characterized in that, The spiral winding direction of the plurality of cleaning brushes (31) is matched with the rotation direction of the vortex generator (2) and the rotating main shaft (3) so that the plurality of cleaning brushes (31) can generate an axial force that pushes impurities toward the discharge end when rotating.

5. The cyclone self-cleaning filter device according to claim 1, characterized in that, The vortex generator (2) is an axial turbine or a slanted blade fan.

6. The cyclone self-cleaning filter device according to claim 5, characterized in that, The filter cylinder (1) is also provided with a water inlet end cap (13) at the water inlet end. One end of the water inlet cap (13) forms a water inlet, and the other end forms a fitting opening that wraps around the outer periphery of the vortex generator (2).

7. The cyclone self-cleaning filter device according to claim 6, characterized in that, The filter cylinder (1) is also provided with a membrane fixing cover (15) at the water inlet end; One side of the membrane fixing cover (15) is fixedly connected to the water inlet end cover (13), and the other side is provided with a limiting slot (151) for the filter membrane (11) to be inserted and fixed.

8. The cyclone self-cleaning filter device according to claim 6, characterized in that, The filter cylinder (1) is also provided with a drain end cap (14) at the drain end. The two ends of the rotating main shaft (3) are rotatably inserted into the water inlet end cover (13) and the sewage outlet end cover (14) via bearings.

9. The cyclone self-cleaning filter device according to claim 8, characterized in that, The rotary generator (4) is a magnetic induction generator, and the magnetic induction generator has a generator rotor and a generator stator; The power generation rotor is arranged along the same plane and is wound around the outer peripheral wall of the rotating main shaft (3). The power generation stator is correspondingly arranged in the water inlet end cover (13) and is arranged along the same plane as the power generation rotor.

10. The cyclone self-cleaning filter device according to any one of claims 1 to 9, characterized in that, It also includes the controller; The controller is electrically connected to the rotary generator (4), the pressure sensor (6), and the electric valve (5), respectively. The controller is equipped with an adjustment threshold; When the pressure value detected by the pressure sensor (6) is less than the control threshold, the controller controls the electric valve (5) in the water outlet (12) to open and the electric valve (5) in the sewage outlet to close. When the pressure value detected by the pressure sensor (6) is greater than the control threshold, the controller controls the electric valve (5) in the water outlet (12) to close and the electric valve (5) in the sewage outlet to open.

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