Overwater semi-floating type automatic cleaning filter

Abstract

The utility model relates to the technical field of before-pump filtering devices, in particular to an overwater semi-floating type automatic cleaning filter which comprises a floating assembly, a supporting frame, a filtering device and a cleaning device, a shaft barrel is installed on the supporting frame, the filtering device is rotationally connected to the shaft barrel, and the cleaning device is installed on the shaft barrel and used for cleaning the filtering device. The end, communicated with the return water outlet, of the shaft barrel is provided with a return water inlet, and the return water inlet is used for being communicated with the water outlet end of a water pump. The filtering device is provided with a net barrel and a filter net, the cleaning device is provided with a water return pipe and a cleaning nozzle, and the cleaning nozzle is used for spraying water flow to automatically clean the filter net. In conclusion, the water flow with certain pressure at the water outlet end of the water pump is used for automatically cleaning the filter, so that the service life of the filter is prolonged, the filtering effect of the filter on the water flow is enhanced, meanwhile, electrification in water is not needed, the safety and economic benefits are improved, and popularization is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of pre-pump filtering devices, in particular to an on-water semi-floating automatic cleaning filter. Background Art

[0002] A pre-pump filter is a filtration device placed in a body of water. It has a pumping outlet and a filter cartridge that can filter the water. After the pumping outlet is connected to the water pump, while the water pump is pumping water, the water flows through the side walls of the filter cartridge and is filtered and purified. It then flows into the water pump from the pumping outlet, which can prevent impurities from entering the water pump. Over long-term use, impurities filtered by the pre-pump filter will accumulate on the filter screen of the filter cartridge, which can easily cause blockage of the mesh. This is especially true for high-precision filter screens, which can quickly become clogged during use, affecting water filtration efficiency. In severe cases, the filter may become completely blocked and unable to accept water. It can only be removed and cleaned before use, resulting in high maintenance costs and a short service life.

[0003] Later, a pre-pump suspended self-cleaning filter appeared. After the filter with a motor and a suspension box was placed in the water reservoir, the motor needed to be powered on before the filter could be cleaned. However, when the powered equipment was in water, it was prone to power outages and leakage, making it less safe.

[0004] For example, the Chinese patent document with the announcement number CN205461312U discloses an automatic pre-pump filtering device, including a water pump inlet pipe, a water pump, a water pump outlet pipe, a flow regulating valve, a flushing pipe, and an automatic filter. One end of the water pump inlet pipe is connected to the water pump, and the other end of the water pump inlet pipe is connected to the automatic filter. The flushing pipe is connected to the water pump outlet pipe, and the flow regulating valve is installed on the flushing pipe. The automatic filter includes an upper cover, a base, a filter, a motor, a rotating shaft, a support frame, a spray pipe, and a nozzle. The upper cover and the base are connected through a filter, the rotating shaft is connected to the motor, the support frame is installed vertically to the rotating shaft, the spray pipe is installed at both ends of the support frame, and the nozzle is installed on the spray pipe.

[0005] However, the solution in the above patent document requires a motor to drive the spray cleaning pipe to rotate it and then clean the filter. The structure is complex and electricity needs to be connected to the water. The safety cannot be guaranteed and the cost is increased, which is not conducive to promotion.

[0006] Therefore, based on the above technical problems, it is necessary to conduct research and improvement. Utility Model Content

[0007] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0008] The utility model provides an above-water semi-floating automatic cleaning filter, comprising a floating assembly, a supporting frame, a filtering device and a cleaning device, wherein the floating assembly floats on the water surface, one end of the supporting frame is fixedly connected to the floating assembly, and the other end of the supporting frame is equipped with a shaft cylinder and extends below the water surface, the filtering device is rotatably connected to the shaft cylinder and filters the water body, and the cleaning device is installed on the shaft cylinder and cleans the filtering device; a section of the shaft cylinder located inside the filtering device is provided with a water pumping inlet and a water return outlet, the interior of the shaft cylinder between the water pumping inlet and the water return outlet is kept sealed, and the end of the shaft cylinder that is connected to the water pumping inlet is provided with a It is a water pumping outlet, which is used to connect to the water inlet end of the water pump; the end of the shaft cylinder that is connected to the return water outlet is set as a return water inlet, which is used to connect to the water outlet end of the water pump; the filtering device is provided with a net barrel, both ends of the net barrel are rotatably connected to the shaft cylinder respectively, and a filter screen is provided on its circumferential side wall, and the filter screen can filter the water body, so that impurities in the water body are intercepted outside the filter screen; the cleaning device is provided with a return water pipe, one end of the return water pipe is connected to the return water outlet of the shaft cylinder, and the other end thereof is equipped with multiple cleaning nozzles, and the cleaning nozzles are used to spray water to automatically clean the filter screen.

[0009] As a further solution of the present invention: there is a certain angle between the axial direction of the cleaning nozzle and the radial direction of the net barrel, so that the water flow sprayed by the cleaning nozzle can drive the net barrel to continuously rotate around the shaft tube, thereby comprehensively cleaning the filter net on the side wall of the net barrel.

[0010] As a further solution of the present invention: side panels are respectively provided at both ends of the net barrel, the outer periphery of the side panels is fixedly connected to the filter screen, and a bearing is provided at the center of the side panels, and is rotatably connected to the shaft cylinder through the bearing.

[0011] As a further solution of the present invention: a plurality of power water blockers are provided on the side of the side plate facing the interior of the net barrel, and the plurality of power water blockers are evenly distributed along the circumference of the side plate; the return water pipe is provided with a power water spray pipe, and the power water spray pipe is used to spray water to drive the power water blocker, so that the power water blocker moves a certain angle along the circumference of the side plate, thereby driving the side plate to rotate a certain angle around the axis tube, and then driving the entire net barrel to rotate around the axis tube.

[0012] As a further solution of the present invention: the dynamic water stopper is configured as a sheet structure with a certain bending amplitude, one side of which is fixed to the side plate, and the other side forms a free side.

[0013] As a further solution of the present invention: the bending direction of the power water blocker is opposite to the direction of water flow sprayed from the power water spray pipe.

[0014] As a further solution of the present invention: one end of the dynamic water blocker faces the outer periphery of the side plate, and the other end faces the center of the side plate, and the end of the dynamic water blocker facing the center of the side plate is bent toward the outer periphery of the side plate by a certain amplitude, thereby forming a water guide bend, and the water guide bend is used to guide water to flow toward the end of the dynamic water blocker facing the outer periphery of the side plate.

[0015] As a further solution of the present invention: the direction in which the cleaning nozzle drives the net barrel to rotate is opposite to the direction in which the water pipe drives the net barrel to rotate.

[0016] As a further solution of the present invention: the axial direction of the cleaning nozzle and the radial direction of the net barrel form an overlapping state, thereby enhancing the cleaning force of the cleaning nozzle on the mesh of the filter net.

[0017] As a further solution of the present invention: the floating assembly is provided with a float, and the float can provide buoyancy in water.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. By setting a cleaning device in the filter and connecting the water outlet of the water pump with the return pipe, the water flow with a certain water pressure from the water outlet of the water pump enters the return pipe and is sprayed out from the cleaning nozzle, the mesh of the filter can be cleaned, thereby cleaning the impurities left in the mesh, realizing automatic cleaning of the filter without power supply, which can improve the safety of the filter, save energy and facilitate promotion.

[0020] 2. A power water blocker is also set on the side panel of the net barrel, and a power water spray pipe is set on the return pipe. The power water blocker is driven to move by water flow with a certain water pressure, thereby driving the net barrel to rotate, so that the water flow sprayed from the cleaning nozzle can comprehensively clean the mesh of the entire filter, improve its cleaning efficiency and extend its service life.

[0021] 3. By setting the passive water blocker to a sheet structure with a bending amplitude, a water guide bend can be formed, thereby further enhancing the rotational driving force of the net barrel, increasing the speed of the net barrel rotation, and further improving the cleaning efficiency.

[0022] Therefore, after the above-mentioned improvements, the utility model can provide a semi-floating automatic cleaning filter on water, which uses the water flow with a certain pressure at the outlet end of the water pump to automatically clean the filter, thereby extending the service life of the filter and enhancing its filtering effect on the water flow. At the same time, it does not require electricity in the water, thereby improving its safety and economic benefits and facilitating promotion.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 It is a structural diagram of the net bucket of the utility model;

[0027] Figure 3 It is a structural schematic diagram of the cleaning device of the utility model;

[0028] Figure 4 It is a structural diagram of the first embodiment of the utility model;

[0029] Figure 5 It is a structural diagram of the second embodiment of the present utility model;

[0030] Figure 6 It is a structural diagram of the third embodiment of the present utility model.

[0031] The reference numerals and names in the figures are as follows:

[0032] 10 floating assembly; 11 buoy; 20 supporting frame; 21 shaft cylinder; 22 pumping inlet; 23 pumping outlet; 24 return water inlet; 25 return water outlet; 30 filtering device; 31 net bucket; 32 filter screen; 33 mesh; 34 side plate; 35 bearing; 40 dynamic water blocker; 41 water guide bend; 50 cleaning device; 51 return water pipe; 52 supporting column; 53 cleaning nozzle; 54 dynamic water spray pipe. DETAILED DESCRIPTION

[0033] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] See also Figures 1 to 6In an embodiment of the present invention, a semi-floating automatic cleaning filter on water includes a floating assembly 10, a supporting frame 20, a filtering device 30 and a cleaning device 50. The floating assembly 10 floats on the water surface, one end of the supporting frame 20 is fixedly connected to the floating assembly 10, and the other end thereof is equipped with a shaft cylinder 21 and extends below the water surface. The filtering device 30 is rotatably connected to the shaft cylinder 21 and filters the water body. The cleaning device 50 is installed on the shaft cylinder 21 and cleans the filtering device 30; a section of the shaft cylinder 21 located inside the filtering device 30 is provided with a water pumping inlet 22 and a return water outlet 25, the interior of the shaft cylinder 21 between the water pumping inlet 22 and the return water outlet 25 is kept sealed, and the shaft cylinder 21 is kept in communication with the water pumping inlet 22 One end is set as a water pumping outlet 23, and the water pumping outlet 23 is used to connect to the water inlet end of the water pump; the end of the shaft cylinder 21 that is connected to the return water outlet 25 is set as a return water inlet 24, and the return water inlet 24 is used to connect to the water outlet end of the water pump; the filtering device 30 is provided with a net barrel 31, and the two ends of the net barrel 31 are respectively rotatably connected to the shaft cylinder 21, and a filter screen 32 is provided on its circumferential side wall, and the filter screen 32 can filter the water body, so that impurities in the water body are intercepted outside the filter screen 32; the cleaning device 50 is provided with a return water pipe 51, one end of the return water pipe 51 is connected to the return water outlet 25 of the shaft cylinder 21, and the other end thereof is equipped with a plurality of cleaning nozzles 53, and the cleaning nozzles 53 are used to spray water to automatically clean the filter screen 32.

[0035] Specifically, the shaft cylinder 21 is preferably configured as a tubular structure so that water can flow through its interior, and the interior of the shaft cylinder 21 between the water pumping inlet 22 and the water return outlet 25 needs to be kept sealed. The shaft cylinder 21 can be sealed by providing a partition inside the shaft cylinder 21 so that a water pumping outlet 23 is formed at one end of the shaft cylinder 21 and a water return inlet 24 is formed at the other end.

[0036] The ends of the net barrel 31 are preferably sealed, allowing water to enter the net barrel 31 only through the filter screens 32 on the side walls, thereby filtering the water. The filter screens 32 can be independent, rigid filters 32 that surround the ends of the net barrel 31 to form the circumferential side walls of the net barrel 31. Alternatively, the circumferential side walls of the net barrel 31 can be perforated to form a porous filter screen 32 structure. The cleaning nozzles 53 can spray water from the inside of the net barrel 31, flushing out impurities trapped in the mesh 33 of the filter screen 32 and automatically cleaning the filter screen 32.

[0037] In addition, one end of the return pipe 51 can be connected to the shaft cylinder 21 via a tee fitting, and the other end can be provided with a support column 52. One end of the support column 52 is fixed to the shaft cylinder 21, and the other end is fixed to the return pipe 51, thereby supporting and fixing the return pipe 51. It will be understood that the end of the return pipe 51 away from the shaft cylinder 21 has a closed structure to prevent water from flowing through. The water inlet 22 can be a hole directly opened in the shaft cylinder 21, or it can be an opening provided by a tee fitting.

[0038] Secondly, the filter of the present invention comprises a float assembly 10 provided with a buoyancy 11, which provides buoyancy in the water, allowing the filter to float on the water surface. The buoyancy 11 utilizes the pressured water flow from the outlet of the water pump to generate power, driving the net barrel 31 to automatically rotate. The water flow also automatically cleans the mesh 33 of the filter 32. This device is a pre-filter, typically installed at the water inlet of a self-priming pump. After the water pump is operated to pump water, a portion of the pressured water flow is separated from the outlet and enters the return pipe 51, thereby providing cleaning power and rotational power, thereby automatically flushing impurities attached to the filter 32 during filtration.

[0039] Again, its usage state is usually to first place the device in water, use the float 11 to make the device float on the water surface, and connect the water outlet 23 of the filter with the water inlet pipe of the external self-priming pump. Use this device to filter the water and suck it into the pump, and then send the water flow to the place where water is needed through the water outlet end of the water pump. At the same time, the water outlet end of the water pump can also use a thin tube to connect the water flow to the return pipe 51, so that the water flow re-enters the return pipe 51 of the cleaning device 50, which can provide both rotational power and cleaning power to the device, and clean the impurities blocked on the filter screen 32, thereby improving the filtration efficiency of the filter and extending its service life.

[0040] In the first embodiment of the present invention, Figure 4 As shown, preferably, there is a certain angle between the axial direction of the cleaning nozzle 53 and the radial direction of the net barrel 31, so that the water flow sprayed by the cleaning nozzle 53 can drive the net barrel 31 to continuously rotate around the shaft cylinder 21, thereby comprehensively cleaning the filter net 32 ​​on the side wall of the net barrel 31.

[0041] Specifically, since the mesh holes 33 are distributed around the circumference of the net barrel 31, and in order to ensure that the water flow sprayed by the cleaning nozzle 53 has a certain water pressure, it is not advisable to set too many cleaning nozzles 53. Therefore, the cleaning nozzle 53 can be set to be inclined at a certain angle so that while cleaning the mesh holes 33, it can also drive the net barrel 31 to rotate, thereby cleaning all the mesh holes 33 around the circumference of the net barrel 31.

[0042] In addition, the angle between the axial direction of the cleaning nozzle 53 and the radial direction of the net barrel 31 can be set to α. In order to balance the cleaning effect of the water flow sprayed by the cleaning nozzle 53 on the mesh 33 and the effect of driving the net barrel 31 to rotate, the angle value of α is preferably set to 1 degree to 90 degrees.

[0043] like Figure 2 and Figure 4 As shown, preferably, side panels 34 are respectively provided at both ends of the net barrel 31, the outer periphery of the side panels 34 is fixedly connected to the filter net 32, and a bearing 35 is provided at the center of the side panels 34, and a rotational connection is formed with the shaft cylinder 21 through the bearing 35.

[0044] Specifically, in order to prevent water from entering from both ends of the net barrel 31, it is preferred to set the side plate 34 as a whole plate-shaped body without pores, and the bearing 35 is preferably a waterproof bearing 35 with a sealing ring in an existing product, which can prevent water from entering the bearing 35 and affecting its life, and can also prevent water from entering the inside of the net barrel 31 from the bearing 35, and can also avoid debris clogging the bearing 35.

[0045] In the second embodiment of the present invention, Figure 3 and Figure 5 As shown, preferably, a plurality of power water blockers 40 are provided on the side of the side plate 34 facing the interior of the net barrel 31, and the plurality of power water blockers 40 are evenly distributed along the circumference of the side plate 34; the return water pipe 51 is provided with a power water spray pipe 54, and the power water spray pipe 54 is used to spray water to drive the power water blocker 40, so that the power water blocker 40 moves a certain angle along the circumference of the side plate 34, thereby driving the side plate 34 to rotate a certain angle around the shaft cylinder 21, and then driving the entire net barrel 31 to rotate around the shaft cylinder 21.

[0046] Specifically, the rotational driving force exerted by the cleaning nozzle 53 on the net barrel 31 is primarily generated by an oblique thrust on the inner sidewalls of the net barrel 31 and the inner sidewalls of the meshes 33. While increasing the oblique thrust by increasing the angle α can increase the oblique thrust, the cleaning power applied to the meshes 33 is correspondingly reduced. Therefore, increasing the cleaning power applied to the meshes 33 also reduces the rotational driving force applied to the net barrel 31. To address this issue, a power water blocker 40 can be installed on the side panels 34 of the net barrel 31, and a power water spray pipe 54 can be added to the return pipe 51. The high-pressure water jetted from the power water spray pipe 54 propels the power water blocker 40, thereby driving the net barrel 31 to rotate.

[0047] Secondly, in the second embodiment, the addition of the dynamic water blockers 40 and the dynamic water spray pipe 54 can independently drive the rotation of the net barrel 31, thereby reducing the angle α, thereby increasing the cleaning power of the cleaning nozzle 53 on the mesh 33. In addition, the multiple dynamic water blockers 40 can be evenly distributed at a predetermined distance around the circumference of the side plate 34, so that the water sprayed from the dynamic water spray pipe 54 can continuously drive the multiple dynamic water blockers 40 to move, thereby driving the continuous rotation of the side plate 34 and the net barrel 31.

[0048] Furthermore, because the powered water blocker 40 and the powered water spray pipe 54 independently drive the net barrel 31 to rotate, the tilt direction of the cleaning nozzle 53 can be set opposite to the direction of the powered water spray pipe 54. That is, the direction in which the cleaning nozzle 53 drives the net barrel 31 to rotate is opposite to the direction in which the water spray pipe drives the net barrel 31 to rotate. As the net barrel 31 rotates under the drive of the powered water spray pipe 54, the water sprayed from the cleaning nozzle 53 cleans the meshes 33. In other words, the meshes 33 and the sprayed water move in opposite directions, generating a greater impact force, thereby achieving a greater cleaning effect on impurities accumulated within the meshes 33.

[0049] like Figure 3 As shown, preferably, the power water blocker 40 is configured as a sheet structure with a certain bending amplitude, one side of which is fixed to the side plate 34 and the other side forms a free side. The bending direction of the power water blocker 40 is opposite to the direction of the water flow sprayed by the power water spray pipe 54.

[0050] Specifically, in order to convert the force of the water flow sprayed from the power water spray pipe 54 into the rotational driving force of the net barrel 31, it is preferred to set the power water blocker 40 to a sheet structure so that it has a larger area to receive the water flow, thereby generating a larger rotational driving force.

[0051] Secondly, in order to strengthen the driving force of the water flow on the dynamic water stop 40, the dynamic water stop 40 can be set to be bent at a certain angle, and the bent part faces the direction of the water flow, so that the bent part can withstand more water flow and improve its driving force.

[0052] like Figure 5 and Figure 6 As shown, preferably, one end of the dynamic water blocker 40 faces the outer periphery of the side plate 34, and the other end faces the center of the side plate 34, and the end of the dynamic water blocker 40 facing the center of the side plate 34 is bent toward the outer periphery of the side plate 34 by a certain amplitude, thereby forming a water guide bend 41, and the water guide bend 41 is used to guide water to flow toward the end of the dynamic water blocker 40 facing the outer periphery of the side plate 34.

[0053] Specifically, the water guide bend 41 can prevent water from flowing toward the center of the side plate 34 , causing the water to tend to flow toward the periphery of the side plate 34 , thereby better driving the side plate 34 to rotate.

[0054] In the third embodiment of the present invention, Figure 6 As shown, preferably, the axial direction of the cleaning nozzle 53 and the radial direction of the net barrel 31 form an overlapping state, thereby enhancing the cleaning force of the cleaning nozzle 53 on the mesh 33 of the filter net 32.

[0055] Specifically, in the third embodiment, the angle α can be reduced to zero, that is, the axial direction of the cleaning nozzle 53 coincides with the radial direction of the net barrel 31. The water flow ejected from the cleaning nozzle 53 can be ejected perpendicular to the mesh 33, thereby maximizing the cleaning of the mesh 33 and improving cleaning efficiency.

[0056] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced within the present invention.

Claims

1. A semi-floating automatic cleaning filter on water, characterized in that: The invention comprises a floating assembly (10), a supporting frame (20), a filtering device (30) and a cleaning device (50), wherein the floating assembly (10) floats on the water surface, one end of the supporting frame (20) is fixedly connected to the floating assembly (10), and the other end thereof is provided with a shaft cylinder (21) and extends below the water surface, the filtering device (30) is rotatably connected to the shaft cylinder (21) and filters the water body, and the cleaning device (50) is installed on the shaft cylinder (21) and cleans the filtering device (30); a section of the shaft cylinder (21) located inside the filtering device (30) is provided with a water pumping inlet (22) and a water return outlet (25), the interior of the shaft cylinder (21) between the water pumping inlet (22) and the water return outlet (25) is kept sealed, and the end of the shaft cylinder (21) that is kept in communication with the water pumping inlet (22) is provided as a water pumping outlet (23). The pumping outlet (23) is used to communicate with the water inlet of the water pump; one end of the shaft cylinder (21) that is in communication with the return water outlet (25) is set as a return water inlet (24), and the return water inlet (24) is used to communicate with the water outlet of the water pump; the filtering device (30) is provided with a net barrel (31), both ends of the net barrel (31) are rotatably connected to the shaft cylinder (21), and a filter screen (32) is provided on its circumferential side wall, and the filter screen (32) can filter the water body, so that impurities in the water body are intercepted outside the filter screen (32); the cleaning device (50) is provided with a return water pipe (51), one end of the return water pipe (51) is in communication with the return water outlet (25) of the shaft cylinder (21), and the other end thereof is provided with a plurality of cleaning nozzles (53), and the cleaning nozzles (53) are used to spray water to automatically clean the filter screen (32).

2. The semi-floating automatic cleaning filter according to claim 1, characterized in that: There is a certain angle between the axial direction of the cleaning nozzle (53) and the radial direction of the net barrel (31), so that the water flow sprayed by the cleaning nozzle (53) can drive the net barrel (31) to continuously rotate around the shaft cylinder (21), thereby comprehensively cleaning the filter screen (32) on the side wall of the net barrel (31).

3. The semi-floating automatic cleaning filter according to claim 1, characterized in that: Side plates (34) are respectively provided at both ends of the net barrel (31), the outer periphery of the side plates (34) is fixedly connected to the filter screen (32), and a bearing (35) is provided at the center of the side plates (34), and is rotatably connected to the shaft cylinder (21) via the bearing (35).

4. The semi-floating automatic cleaning filter according to claim 3, characterized in that: A plurality of power water blockers (40) are provided on one side of the side plate (34) facing the inside of the net barrel (31), and the plurality of power water blockers (40) are evenly distributed along the circumference of the side plate (34); the return water pipe (51) is provided with a power water spray pipe (54), and the power water spray pipe (54) is used to spray water to drive the power water blocker (40), so that the power water blocker (40) moves a certain angle along the circumference of the side plate (34), thereby driving the side plate (34) to rotate a certain angle around the shaft cylinder (21), and further driving the entire net barrel (31) to rotate around the shaft cylinder (21).

5. The semi-floating automatic cleaning filter according to claim 4, characterized in that: The dynamic water blocker (40) is configured as a sheet-like structure with a certain bending amplitude, one side of which is fixed to the side plate (34) and the other side of which forms a free side.

6. The semi-floating automatic cleaning filter according to claim 5, characterized in that: The bending direction of the power water blocker (40) is opposite to the direction of the water flow sprayed from the power water spray pipe (54).

7. The semi-floating automatic cleaning filter according to claim 4, characterized in that: One end of the dynamic water blocker (40) faces the outer periphery of the side plate (34), and the other end faces the center of the side plate (34). The end of the dynamic water blocker (40) facing the center of the side plate (34) is bent toward the outer periphery of the side plate (34) by a certain amplitude, thereby forming a water guide bend (41). The water guide bend (41) is used to guide water to flow toward the end of the dynamic water blocker (40) facing the outer periphery of the side plate (34).

8. The semi-floating automatic cleaning filter according to claim 4, characterized in that: The direction in which the cleaning nozzle (53) drives the net barrel (31) to rotate is opposite to the direction in which the water spray pipe drives the net barrel (31) to rotate.

9. The semi-floating automatic cleaning filter according to claim 4, characterized in that: The axial direction of the cleaning nozzle (53) and the radial direction of the net barrel (31) are in an overlapping state, thereby enhancing the cleaning force of the cleaning nozzle (53) on the mesh (33) of the filter net (32).

10. The semi-floating automatic cleaning filter according to claim 1, characterized in that: The floating assembly (10) is provided with a buoy (11), and the buoy (11) can provide buoyancy in water.

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