Automatic cleaning and filtering device

Abstract

The invention discloses an automatic cleaning and filtering device, and relates to the technical field of filters, the automatic cleaning and filtering device comprises a device body and a filter screen structure, the device body is internally provided with a flow channel, and an inlet, an outlet and a drain outlet which are communicated with the flow channel; the filter screen structure comprises a driving seat and a filter screen fixed to the driving seat, the driving seat is rotatably mounted in the flow channel and provided with driving wings, flowing kinetic energy of media acts on the driving wings to drive the filter screen to rotate synchronously, and the filter screen is provided with a filter cavity and filter holes distributed in the circumferential direction of the filter cavity. The filter holes are communicated with the inlet and the filter cavity, and an end opening of the filter cavity is communicated with the outlet; according to the technical scheme provided by the invention, the self-cleaning effect of the filter screen can be realized, so that the cleaning effect of the filter screen is improved, and meanwhile, the whole structure of the automatic cleaning and filtering device is simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of filters, and particularly to an automatic cleaning filter device. Background Art

[0002] In the related art, the filter screen of a filter is commonly fixed. Water or a driving device is used as the power to drive a scraping structure such as a brush to rotate for scraping and cleaning the filter screen. The overall structure is complex, resulting in high application or maintenance costs and a large volume. Limited by the volume of the filter, the space adaptability of the filter is easily affected. Summary of the Invention

[0003] The main object of the present invention is to propose an automatic cleaning filter device, aiming to achieve the self-cleaning effect of the filter screen, improve the cleaning effect of the filter screen, and at the same time help simplify the overall structure of the automatic cleaning filter device.

[0004] To achieve the above object, the automatic cleaning filter device proposed by the present invention includes:

[0005] A device body, which is internally provided with a flow channel and an inlet, an outlet, and a sewage outlet communicating with the flow channel; and

[0006] A filter screen structure, including a driving seat and a filter screen fixed to the driving seat. The driving seat is rotatably installed in the flow channel and has driving wings to drive the filter screen to rotate synchronously by using the flowing kinetic energy of the medium acting on the driving wings. The filter screen is provided with a filtering cavity and filtering holes arranged along its circumferential direction. The filtering holes communicate the inlet and the filtering cavity, and the end opening of the filtering cavity communicates with the outlet.

[0007] In one embodiment, the aperture of the filtering hole is r, and 0.01 mm ≤ r ≤ 0.5 mm;

[0008] And / or, the driving seat and the filter screen are integrally formed.

[0009] In one embodiment, a plurality of driving wings are arranged along the circumferential direction of the filter screen structure, and the extending direction of the driving wings does not coincide with the normal direction of the filter screen structure.

[0010] In one embodiment, the driving wing includes a main body portion. The driving seat further includes a first limiting ring and a second limiting ring provided at both ends of the main body portion. The filter screen is arranged between the first limiting ring and the second limiting ring and is located inside the main body portion.

[0011] In one embodiment, the driving wing further includes a driving portion provided on the side of the main body portion facing away from the filter screen. The driving portion protrudes from the outer peripheral surface of the first limiting ring and can extend to the first limiting ring and / or the second limiting ring;

[0012] And / or, a plurality of driving parts of the driving wings are arranged at intervals in the axial direction of the driving seat;

[0013] And / or, the driving seat further includes a reinforcing rib, and the reinforcing rib and the driving wing are respectively arranged on opposite sides of the filter screen;

[0014] And / or, the first limiting ring, the second limiting ring and two adjacent driving wings jointly enclose a through hole for avoiding the filter holes.

[0015] In one embodiment, the inlet is asymmetrically arranged with respect to the center line of the driving seat;

[0016] And / or, the axes of the sewage outlet and the inlet can be arranged at an angle;

[0017] And / or, the sewage outlet and the inlet can be staggered in the extending direction of the rotation axis of the driving seat; or the axes of the sewage outlet and the inlet can coincide.

[0018] In one embodiment, the automatic cleaning filter device further includes a sewage discharge device for opening or closing the sewage outlet.

[0019] In one embodiment, the device body includes a first pipe section and a second pipe section. The first pipe section is provided with the inlet and the sewage outlet, and the second pipe section is laterally communicated with the first pipe section and is provided with the outlet.

[0020] In one embodiment, the automatic cleaning filter device further includes a plug structure sealingly connected to the outlet. The filter screen structure is rotatably installed between the end of the plug structure and the pipe wall of the first pipe section, and the plug structure is provided with a medium output channel communicating with the filter cavity.

[0021] In one embodiment, a first limiting boss protrudes from the pipe wall of the first pipe section, and the driving seat is provided with a first limiting hole adapted to the first limiting boss;

[0022] And / or, a second limiting boss protrudes from the end of the plug structure, and a rotating seat is rotatably installed on the second limiting boss, and the driving seat is fixed to the rotating seat;

[0023] And / or, the plug structure is provided with a limiting ring protrusion for abutting against the edge of the outlet;

[0024] And / or, the second pipe section is provided with a through hole for the limiting clamp to pass through, and the plug structure is provided with a clamp ring groove. The limiting clamp passes through the through hole and is limited in the clamp ring groove;

[0025] And / or, a sealing ring groove is further provided on the second pipe section, the sealing ring is embedded in the sealing ring groove, and one side away from the sealing ring groove abuts against the pipe wall of the second pipe section.

[0026] In the technical solution of the present invention, the filter screen and the driving seat are fixed as a whole, and the driving seat has driving wings. When the automatic cleaning filter device is in normal use or discharging sewage, the kinetic energy of the medium directly impacts the driving wings, so that the driving seat can drive the filter screen to rotate together. Thus, compared with additionally arranging blades to drive the filter screen to rotate, the filter screen is rotatably installed in the flow channel through the driving seat. On the one hand, the driving seat serves as the support base of the filter screen, ensuring the structural stability of the filter screen, improving the overall structural stability of the filter screen structure, and also improving the compactness level between the filter screen and the driving seat, simplifying the filter screen structure, reducing costs, and reducing the occupied space of the filter screen structure, thereby improving the space adaptability of the automatic cleaning filter device. On the other hand, the filter screen can self-clean while filtering by virtue of its rotational movement. Among them, since the filter holes in the circumferential direction of the filter screen all participate in filtering, the filter screen has a large filtering area, which helps to improve the filtering efficiency. Also, because the filter screen rotates continuously, it drives the medium in the flow channel to wash the impurities attached to different surfaces of the filter screen, causing the impurities to peel off from the filter screen, which can reduce the risk of filter hole blockage, ensure the filtering efficiency and service life of the filter screen, and at the same time effectively reduce the cleaning difficulty, realizing the self-cleaning of the automatic cleaning filter device.

[0027] Specifically, the filter screen is arranged with filter holes in its circumferential direction, and its end is communicated with the outlet, that is, the medium in the flow channel flows radially into the filter cavity and axially out of the filter cavity. Cooperating with the filter screen that can rotate in the flow channel, the medium can enter the filter cavity through the filter holes at any position in the circumferential direction of the filter screen, improving the utilization rate of the filter screen, thereby improving the filtering efficiency of the filter screen. At the same time, it ensures that the filter screen is evenly stressed, reduces the risk of deformation, and prolongs the service life of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0029] Figure 1 It is a schematic structural diagram of an embodiment of the automatic cleaning filter device provided by the present invention;

[0030] Figure 2 For Figure 1 It is a schematic structural diagram of the automatic cleaning filter device from another perspective;

[0031] Figure 3 is Figure 1 the top view of the automatic cleaning filter device in

[0032] Figure 4 is Figure 3 the sectional view of the automatic cleaning filter device in

[0033] Figure 5 is Figure 4 the structural schematic diagram of the filter screen structure, the plug structure and the rotating seat in

[0034] Figure 6 is Figure 5 the exploded schematic diagram of the filter screen structure, the plug structure and the rotating seat in

[0035] Figure 7 is Figure 5 the structural schematic diagram of the filter screen structure in

[0036] Figure 8 is Figure 7 the top view of the filter screen structure in

[0037] Figure 9 is Figure 1 the side view of the automatic cleaning filter device in

[0038] Figure 10 is Figure 9 the sectional view of the automatic cleaning filter device in

[0039] Figure 11 is the structural schematic diagram of the device body.

[0040] Explanation of the reference numerals in the attached drawings:

[0041] 10. Device body; 101. Flow channel; 102. Inlet; 103. Outlet; 104. Drain port; 105. Inclined surface; 11. First pipe section; 111. First limiting boss; 12. Second pipe section; 121. Through hole;

[0042] 20. Filter screen structure; 21. Driving seat; 211. Driving wing; 2111. Main body part; 2112. Driving part; 212. First limiting ring; 213. Second limiting ring; 214. Reinforcing rib; 215. Through hole; 216. First limiting hole; 22. Filter net; 221. Filter cavity;

[0043] 30. Plug structure; 301. Medium output channel; 31. Second limiting protrusion; 32. Clamp ring groove; 33. Sealing ring groove; 34. Limiting ring protrusion; 40. Rotating seat;

[0044] 51. Limiting clamp; 52. Sealing ring.

[0045] The realization, functional features, and advantages of the present invention will be further described in conjunction with embodiments and with reference to the accompanying drawings. Specific embodiments

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0047] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present invention, then such directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If this specific posture changes, then such directional indications will also change accordingly.

[0048] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, then such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0049] In related technologies, the filter screen of a filter is commonly fixed, and a scraping structure such as a brush is rotated by a medium or a driving device as a power source to scrape and clean the filter screen. The overall structure is complex, resulting in high application or maintenance costs, and the volume is relatively large. Due to the limited volume of the filter, the spatial adaptability of the filter is easily affected.

[0050] Specifically, the medium specifically includes but is not limited to water, air, and oil. Taking water as an example of the medium, in production and daily life, due to inconsistent water quality in different regions and various impurities, filters are installed in various products such as pipelines, sanitary wares, etc. that need to be filtered. However, due to the complex overall structure and high cost (ranging from several hundred yuan), it is difficult to meet all the needs of terminal production and life. Moreover, due to the water flow characteristics and structural features, the impurities intercepted by the fixed filter screen tend to concentrate in a certain area of the filter screen, causing a thick filter cake to quickly form in that area, reducing the filtering effect, increasing the cleaning difficulty and cleaning and maintenance costs, and the filter screen is prone to deformation or even damage, affecting the service life of the filter screen.

[0051] To solve this technical problem, the present invention proposes an automatic cleaning filter device, which can be applied to terminal devices such as pipelines, sanitary wares, and purifiers that require filtration and purification.

[0052] Please refer to Figures 1 to 11 , in an embodiment of the present invention, the automatic cleaning filter device includes a device body 10 and a filter screen structure 20. A flow channel 101 and an inlet 102, an outlet 103, and a sewage outlet 104 communicating with the flow channel 101 are provided in the device body 10; the filter screen structure 20 includes a driving seat 21 and a filter screen 22 fixed to the driving seat 21. The driving seat 21 is rotatably installed in the flow channel 101 and has a driving wing 211 to drive the filter screen 22 to rotate synchronously by utilizing the flowing kinetic energy of the medium acting on the driving wing 211. The filter screen 22 is provided with a filtering cavity 221 and filtering holes arranged along its circumferential direction. The filtering holes communicate the inlet 102 and the filtering cavity 221, and the end opening of the filtering cavity 221 communicates with the outlet 103; in this way, the overall structure of the automatic cleaning filter device is simplified, the cost is reduced, and at the same time, the cleaning effect and service life of the automatic cleaning filter device are improved.

[0053] In the technical solution of the present invention, the filter screen 22 and the drive seat 21 are fixed as a whole, and the drive seat 21 has drive wings 211. When the automatic cleaning filter device is in normal use or discharging sewage, the kinetic energy of the medium directly impacts the drive wings 211, enabling the drive seat 21 to drive the filter screen 22 to rotate together. In this way, compared with additionally arranging blades to drive the filter screen 22 to rotate, the filter screen 22 is rotatably installed in the flow channel 101 through the drive seat 21. On the one hand, the drive seat 21 serves as the support base of the filter screen 22, ensuring the structural stability of the filter screen 22, improving the overall structural stability of the filter screen structure 20, enhancing the compactness level between the filter screen 22 and the drive seat 21, simplifying the filter screen structure 20, reducing costs, and reducing the occupied space of the filter screen structure 20, thereby improving the space adaptability of the automatic cleaning filter device. On the other hand, the filter screen 22 can self-clean while performing the filtering function by virtue of its rotational movement. Among them, since the filter holes in the circumferential direction of the filter screen 22 all participate in filtering, the filter screen 22 has a large filtering area, which helps to improve the filtering efficiency. Also, because the filter screen 22 rotates continuously, it drives the medium in the flow channel 101 to wash the impurities attached to different surfaces of the filter screen 22, causing the impurities to peel off from the filter screen 22, reducing the risk of filter hole blockage, ensuring the filtering efficiency and service life of the filter screen 22, and effectively reducing the cleaning difficulty, realizing the self-cleaning of the automatic cleaning filter device.

[0054] Specifically, the filter screen 22 is arranged with filter holes in its circumferential direction, and its end is communicated with the outlet 103, that is, the medium in the flow channel 101 flows radially into the filter cavity 221 and axially out of the filter cavity 221. Cooperating with the fact that the filter screen 22 can rotate in the flow channel 101, the medium can enter the filter cavity 221 through the filter holes at any position in the circumferential direction of the filter screen 22, improving the utilization rate of the filter screen 22, thereby improving the filtering efficiency of the filter screen 22. At the same time, it ensures that the filter screen 22 is evenly stressed, reduces the risk of deformation, and extends the service life of the filter screen 22.

[0055] In addition, compared with setting a drive device to provide power, using the impact of the medium on the drive wings 211 to realize the rotation of the filter screen structure 20 has low cost and a simple structure. And the medium specifically includes but is not limited to water, air, and oil.

[0056] Optionally, in an embodiment of the present invention, the aperture diameter of the filtering holes is r, where 0.01 mm ≤ r ≤ 0.5 mm; in this way, the size of the filtering holes can be made as small as possible, thereby effectively intercepting impurities and even microorganisms in the medium, improving the filtering efficiency and filtering effect of the filter net 22. At the same time, the structural strength and durability of the filter net 22 are improved. Among them, the specific values of the aperture diameter of the filtering holes include, but are not limited to, 0.01 mm, 0.02 mm, 0.03 mm, 0.04 mm, 0.06 mm, 0.07 mm, 0.1 mm, 0.12 mm, 0.15 mm, 0.18 mm, 0.2 mm, 0.21 mm, 0.23 mm, 0.25 mm, 0.29 mm, 0.3 mm, 0.34 mm, 0.38 mm, 0.4 mm, 0.5 mm.

[0057] Optionally, in an embodiment of the present invention, the drive seat 21 and the filter net 22 are integrally formed. In this way, the overall structural strength and structural stability of the filter net structure 20 can be effectively improved. At the same time, the number of components of the automatic cleaning filter device is reduced, and the assembly efficiency is improved. Specifically, the drive seat 21 is processed from a hard plastic material, which is convenient for the integral processing of the drive seat 21 and the filter net 22, and can also enable the drive seat 21 to provide support for the filter net 22.

[0058] Please refer to Figure 8 , in an embodiment of the present invention, a plurality of driving wings 211 are arranged along the circumferential direction of the filter net structure 20, and the extending direction of the driving wings 211 does not coincide with the normal direction of the filter net structure 20. Furthermore, by reasonably designing the extending direction of the driving wings 211, the interaction between the medium and the driving wings 211 can be better controlled, so that the kinetic energy of the medium can be more effectively converted into mechanical energy, improving the rotation efficiency of the filter net structure 20 and the exfoliation efficiency of impurities. It can also make the acting force applied to the driving wings 211 be more evenly distributed on the driving wings 211, reduce the vibration of the filter net structure 20, improve the rotation stability of the filter net structure 20, and extend the service life of the filter net structure 20.

[0059] Please refer to Figures 5 to 7In an embodiment of the present invention, the driving wing 211 includes a main body 2111, and the driving seat 21 also includes a first limiting ring 212 and a second limiting ring 213 arranged at both ends of the main body 2111. The filter screen 22 is arranged between the first limiting ring 212 and the second limiting ring 213 and is located on the inner side of the main body 2111. In this way, the main bodies 2111 are evenly arranged on the outer side of the filter screen 22 to support and connect the filter screen 22, thereby improving the connection strength between the driving seat 21 and the filter screen 22, and ensuring the direct drive of the medium to the driving wing 211. The ring 212 and the second limiting sub-ring are arranged at the two ends of the main body 2111, which helps to improve the overall structural stability of the drive seat 21, and at the same time further limit the filter screen 22, thereby improving the connection reliability between the drive seat 21 and the filter screen 22. At this time, the two ends of the filter screen 22 can respectively abut the two end surfaces facing each other of the first limiting ring 212 and the second limiting ring 213, and limiting grooves for inserting the filter screen 22 can also be set on the two end surfaces facing each other of the first limiting ring 212 and the second limiting ring 213, thereby further increasing the connection area between the filter screen 22 and the drive seat 21, thereby enhancing the connection between the filter screen 22 and the drive seat 21.

[0060] Among them, the first limiting ring 212, the second limiting ring 213 and the two adjacent driving wings 211 together form a through hole 215 that avoids the filter hole, so as to reduce the blocking of the filter hole on the filter net 22 by the driving seat 21, and ensure that the medium passes through the through hole 215 and the filter hole in turn and enters the filter cavity 221 to achieve filtering of the medium, thereby improving the cleanliness of the medium flowing out of the outlet 103.

[0061] See also Figure 7 In an embodiment of the present invention, the driving wing 211 further comprises a driving part 2112 disposed on a side of the main body 2111 away from the filter screen 22, the driving part 2112 protrudes from the outer peripheral surface of the first limiting ring 212, and can extend to the first limiting ring 212 and / or the second limiting ring 213. Thus, by arranging the driving part 2112 on the main body 2111, and the driving part 2112 protrudes from the first limiting ring 212, it is convenient for the medium to impact the driving wing 211, and further increases the effective contact area between the driving wing 211 and the medium, thereby improving the driving effect of the medium on the filter screen structure 20 and the cleaning effect on the filter screen structure 20. It can also increase the effective connection area between the driving wing 211 and the first limiting ring 212 and / or the second limiting ring 213, thereby improving the overall structural strength and structural stability of the driving seat 21. However, the present design is not limited thereto. In other embodiments, the driving wing 211 is only disposed on the first limiting ring 212 and the second limiting ring 213. One of the first limiting ring 212 and the second limiting ring 213 is provided with a notch to avoid the glue injection and dispensing port, so that the driving seat 21 and the filter screen 22 are integrally formed.

[0062] Optionally, in an embodiment of the present invention, a plurality of driving parts 2112 of the driving wing 211 are arranged at intervals in the axial direction of the driving seat 21, which helps to better control the flow path of the medium, optimize the acting force on the driving wing 211, reduce vibration, improve the rotational stability of the filter screen structure 20, and at the same time improve the rotational efficiency of the filter screen structure 20.

[0063] Optionally, in an embodiment of the present invention, the driving seat 21 further includes a reinforcing rib 214. The reinforcing rib 214 and the driving wing 211 are respectively arranged on opposite sides of the filter screen 22, so as to further increase the effective connection area between the driving seat 21 and the filter screen 22, improve the installation stability of the filter screen 22 on the driving seat 21, and ensure the filtering effect of the filter screen 22 on the medium. Wherein, both ends of the reinforcing rib 214 can be respectively connected to the first limiting ring 212 and the second limiting ring 213 to improve the structural strength and structural stability of the driving seat 21.

[0064] Please refer to Figures 1 to 4 , in an embodiment of the present invention, the device body 10 includes a first pipe section 11 and a second pipe section 12. The first pipe section 11 is provided with the inlet 102 and the sewage discharge port 104. The second pipe section 12 is laterally connected to the first pipe section 11 and is provided with the outlet 103. In this way, the device body 10 can realize the docking of the connecting pipes communicated with the inlet 102 and the outlet 103 within a limited space, save the occupied space of the device body 10, and also facilitate changing the flow direction of the medium to adapt to the medium filtering path of the filter screen structure 20. It can also improve the overall structural stability of the device body 10 and is easy to process.

[0065] Optionally, in an embodiment of the present invention, the axes of the sewage discharge port 104 and the inlet 102 can be arranged at an angle; at this time, as Figures 1 to 4 shown, in an embodiment, the sewage discharge port 104 and the inlet 102 are respectively arranged on opposite sides of the filter screen structure 20, that is, the axes of the sewage discharge port 104 and the inlet 102 can coincide, and the included angle between them is 180°. The flow channel 101 can be in a T shape, ensuring the structural stability of the device body 10, and at the same time reliably docking with the connecting pipes communicated with the inlet 102 and the sewage discharge port 104 within a limited space to realize the distribution and transportation of the medium. Among them, because the sewage discharge port 104 and the inlet 102 are respectively arranged on opposite sides of the filter screen structure 20, that is, the flow channel 101 in the first pipe section 11 is in a straight line shape, which is convenient for the medium to flow to the outlet 103 after filtration. At the same time, the medium can wash the impurities on the filter screen 22, so that the impurities fall off and are discharged to the sewage discharge port 104 under the action of the medium, reducing the reattachment of the impurities to the filter screen 22 and improving the self-cleaning effect of the filter screen 22.

[0066] In another embodiment, the included angle between the axis of the sewage outlet 104 and the axis of the inlet 102 is less than 180°. Thus, on the basis of ensuring the self-cleaning effect of the filter net 22, the occupied space of the automatic cleaning filter device can be reduced to a certain extent, so as to reliably dock with the connecting pipes communicated with the inlet 102 and the sewage outlet 104 in a limited space, and realize the distribution and transportation of the medium. Specifically, the included angle between the axis of the sewage outlet 104 and the axis of the inlet 102 includes but is not limited to 180°, 120°, 90°, 60°, 45°, 30°.

[0067] Optionally, the axes of the sewage outlet 104 and the inlet 102 can be arranged in a staggered manner. In the embodiments of the present invention, the sewage outlet 104 and the inlet 102 can be arranged in a staggered manner in the extending direction of the rotation axis of the driving seat 21. Thus, the sewage outlet 104 and the inlet 102 can be respectively adaptively connected to two connecting pipes arranged in a staggered manner, so as to realize the distribution and transportation of the medium and the discharge of impurities. In another embodiment, the sewage outlet 104 and the inlet 102 are at least partially arranged in a staggered manner in the extending direction of the normal line of the driving seat 21, and are respectively adaptively connected to two connecting pipes arranged in a staggered manner, so as to realize the distribution and transportation of the medium and the discharge of impurities. In yet another embodiment, as Figure 4 shown, the axes of the sewage outlet 104 and the inlet 102 can be arranged to coincide with each other. Thus, the sewage outlet 104 and the inlet 102 can be respectively adaptively connected to two connecting pipes with coincident axes, so as to realize the distribution and transportation of the medium and the discharge of impurities. However, the present design is not limited thereto. In other embodiments, the axes of the sewage outlet 104 and the inlet 102 form an included angle, and the axes of the sewage outlet 104 and the inlet 102 can be arranged in a staggered manner, or the axes of the sewage outlet 104 and the inlet 102 can be arranged to coincide with each other.

[0068] Furthermore, please refer to Figures 9 to 10 , in the embodiments of the present invention, the inlet 102 is asymmetrically arranged with respect to the center line of the driving seat 21. With such an arrangement, it can be reliably ensured that the kinetic energy of the medium flowing from the inlet 102 to the driving seat 21 can be effectively converted into the mechanical energy for the driving seat 21 to rotate itself, avoiding the mutual cancellation of the kinetic energy of the medium in other directions, which may cause the driving seat 21 to remain stationary, thereby improving the rotation efficiency and cleaning efficiency of the filter net structure 20.

[0069] Specifically, as Figure 9 and Figure 10As shown, a part of the wall surface of the inlet 102 in its circumferential direction gradually approaches the axis direction of the inlet 102 while extending towards the drive seat 21, thereby forming an inclined surface 105 that plays a guiding and concentrating role, such that the inlet 102 on the side closer to the drive seat 21 is asymmetrically arranged with respect to the center line of the drive seat 21, specifically, the rotation center line of the drive seat 21, and the kinetic energy of the concentrated medium can reliably drive the filter screen structure 20 to rotate, achieving the purpose of self-cleaning.

[0070] Please refer to Figure 4 , in an embodiment of the present invention, the caliber of the inlet 102 is smaller than the caliber of the sewage outlet 104. It can be understood that a rotating cavity for the filter screen structure 20 to be rotatably connected, a medium input channel communicating the inlet 102 and the rotating cavity, and a sewage discharge channel communicating the sewage outlet 104 are provided in the flow channel 101. Since the caliber of the inlet 102 is smaller than the caliber of the sewage outlet 104, the caliber of the medium input channel formed at the medium input channel port of the rotating cavity is smaller than the caliber of the sewage discharge channel formed at the sewage discharge channel port of the rotating cavity. On the one hand, the concentrated medium impacts the drive seat 21 to provide rotational power to the drive seat 21, and at the same time increases the contact area between the medium and the filter screen structure 20, which helps to improve the rotation efficiency and filtration efficiency of the filter screen structure 20, as well as the exfoliation efficiency of impurities on the filter screen structure 20, thereby reducing the risk of blockage and improving the cleaning effect. On the other hand, the device body 10 forms a stepped structure at the medium input channel port, which can effectively prevent the exfoliated impurities from passing through the medium input channel and flowing towards the inlet 102, facilitating the impurities to flow towards the sewage outlet 104 and realizing the centralized discharge of impurities in the automatic cleaning filter device.

[0071] Specifically, in an embodiment of the present invention, the automatic cleaning filter device further includes a sewage discharge device, and the sewage discharge device is used to open or close the sewage outlet 104 to drain all the impurities in the automatic cleaning filter device. The sewage discharge device can be configured as a control valve, specifically, a ball valve, or manually or equipped with a stepping motor automatic control module to control the opening or closing of the control valve for the sewage outlet 104. The sewage discharge device can also be a mechanical switch.

[0072] Please refer to Figures 4 to 5, in an embodiment of the present invention, the automatic cleaning and filtering device further includes a plug structure 30 hermetically connected to the outlet 103. The filter screen structure 20 is rotatably installed between the end of the plug structure 30 and the pipe wall of the first pipe section 11. The plug structure 30 is provided with a medium output channel 301 communicating with the filtering chamber 221. It can be understood that, on the basis of ensuring the sealing effect of the plug structure 30 on the outlet 103, the plug structure 30 discharges the filtered medium out of the automatic cleaning and filtering device by means of the medium output channel 301 communicating with the filtering chamber 221. The filter screen structure 20 is rotatably installed between the plug structure 30 and the pipe wall of the first pipe section 11, which can not only realize the positioning of the filter screen structure 20 in the first pipe section 11, ensure the reliable progress of the rotational movement and prevent the filter screen structure 20 from disengaging from the outlet 103, but also improve the disassembly and assembly convenience of the filter screen structure 20, that is, the filter screen structure 20 can be disassembled and installed from the outlet 103 together with the plug structure 30, and also helps to simplify the structure of the device body 10 and facilitate processing and manufacturing.

[0073] Specifically, in an embodiment of the present invention, a first limiting boss 111 protrudes from the pipe wall of the first pipe section 11, and the driving seat 21 is provided with a first limiting hole 216 adapted to the first limiting boss 111. In this way, the first limiting hole 216 is opened at the center of the first limiting ring 212, and the driving seat 21 is limited to the first pipe section 11 by inserting the first limiting boss 111 into the first limiting hole 216. A second limiting boss protrudes from the end of the plug structure 30, and a rotating seat 40 is rotatably installed on the second limiting boss. The driving seat 21 is fixed to the rotating seat 40, so as to realize the limitation of both ends of the driving seat 21 between the pipe wall of the first pipe section 11 and the end of the plug structure 30.

[0074] The driving seat 21 is installed on the plug structure 30 through the rotating seat 40, which is convenient for the processing and demolding of the filter screen structure 20. Among them, a second limiting hole adapted to the second limiting boss is provided at the center of the rotating seat 40, so that the second limiting boss is inserted into the second limiting hole to realize the limitation of the other end of the driving seat 21 on the plug structure 30. The rotating seat 40 is provided with an installation groove for installing the driving seat 21, especially the second limiting ring 213, or the rotating seat 40 is provided with an installation post adapted to be inserted into the opening at the other end of the driving seat 21, and the rotating seat 40 and the driving seat 21 can be fixed into a whole by means of, for example, bonding, welding, clamping, etc., so as to reduce the number of parts of the automatic cleaning and filtering device, improve the assembly efficiency, and at the same time, improve the rotation reliability of the filter screen structure 20.

[0075] Please refer to Figures 4 to 5, in an embodiment of the present invention, the plug structure 30 is provided with a limiting ring convex 34 for abutting against the edge of the outlet 103. In this way, during the process of inserting one end of the plug structure 30 provided with the second limiting boss into the outlet 103, the contact between the limiting ring convex 34 and the edge of the outlet 103 can restrain the movement tendency of the plug structure 30 to further extend into the outlet 103, reduce the risk of the plug structure 30 overpressing the filter screen structure 20 and causing damage or even failure of the filter screen structure 20, improve the installation reliability and rotation reliability of the filter screen structure 20 in the first pipe section 11, and at the same time help to prompt the user that the plug structure 30 has been assembled in place and the next assembly step can be carried out.

[0076] Among them, without affecting the contact and limitation between the limiting ring convex 34 and the edge of the outlet 103, the limiting ring convex 34 can be a complete annular limiting ring convex 34, or a limiting ring convex 34 with a break or notch; the setting of the limiting ring convex 34 can not only play a limiting role, but also hide the connection between the plug structure 30 and the outlet 103, and can improve the sealing performance at the outlet 103 to a certain extent.

[0077] Please refer to Figures 1 to 2 , in an embodiment of the present invention, the second pipe section 12 is provided with a through hole 121 for the limiting clamp 51 to pass through, and the plug structure 30 is provided with a clamp ring groove 32. The limiting clamp 51 passes through the through hole 121 and is limited in the clamp ring groove 32; it can be understood that the through hole 121 is formed in the pipe wall of the second pipe section 12 and is arranged near the outer edge of the outlet 103. Among them, the limiting clamp 51 includes a connecting section and two limiting sections laterally connected to the same side of the connecting section. There are two through holes 121, which penetrate through the opposite sides of the second pipe section 12 and are used for the limiting sections to pass through. Specifically, when the plug structure 30 is inserted into the outlet 103, the clamp ring groove 32 corresponds to the through hole 121, and the two limiting sections are respectively passed through the two through holes 121, and part of them is limited in the clamp ring groove 32, and the connecting section is arranged outside the second pipe section 12 to realize the further fixation of the plug structure 30 at the outlet 103. In this way, it will not affect the rotational movement of the plug structure 30 around its own axis. At this time, the clamp ring groove 32 plays a role in avoiding the limiting clamp 51. On the basis of ensuring the reliable assembly of the second limiting boss and the second limiting hole, the plug structure 30 can be installed at the outlet 103 at any rotation angle, and can also effectively limit the plug structure 30 from detaching from the second pipe section 12 at the outlet 103. At this time, the clamp ring groove 32 and the limiting clamp 51 cooperate to play a limiting role, thereby reliably improving the installation reliability of the plug structure 30 on the device body 10. However, this design is not limited to this. In other embodiments, the plug structure 30 is installed on the second pipe section 12 by thread fitting.

[0078] Combined with reference to Figures 4 to 6, in an embodiment of the present invention, the second pipe section 12 is further provided with a sealing ring groove 33, and a sealing ring 52 is embedded in the sealing ring groove 33, and the side away from the sealing ring groove 33 abuts against the pipe wall of the second pipe section 12. In this way, it effectively avoids the medium from flowing out of the device body 10 through the gap between the plug structure 30 and the pipe wall of the second pipe section 12, reducing the waste of water resources.

[0079] Specifically, the sealing ring groove 33 and the clamp ring groove 32 are arranged at intervals along the axial extension direction of the plug structure 30. The sealing ring groove 33 is arranged close to the first pipe section 11 to block the flow of the medium. At the same time, it effectively avoids the medium from flowing out of the device body 10 through the outlet 103.

[0080] The above is only an exemplary embodiment of the present invention, and does not limit the protection scope of the present invention accordingly. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the protection scope of the present invention.

Claims

1. An automatic cleaning and filtering device, characterized in that, include: The device body is provided with a flow channel and an inlet, an outlet and a sewage outlet connected to the flow channel; and The filter screen structure includes a drive seat and a filter screen fixed to the drive seat, the drive seat can be rotatably installed in the flow channel, and has a drive wing, so as to utilize the flow kinetic energy of the medium to act on the drive wing to drive the filter screen to rotate synchronously, the filter screen is provided with a filter cavity and filter holes arranged along its circumference, the filter holes connect the inlet and the filter cavity, and the end opening of the filter cavity connects the outlet.

2. The automatic cleaning and filtering device according to claim 1, characterized in that, The pore size of the filter hole is r, 0.01mm≤r≤0.5mm; And / or, the driving seat and the filter screen are integrally formed.

3. The automatic cleaning and filtering device according to claim 1, wherein, A plurality of driving wings are arranged along the circumference of the filter structure, and the extending direction of the driving wings does not coincide with the normal direction of the filter structure.

4. The automatic cleaning and filtering device according to claim 3, characterized in that, The driving wing includes a main body, the driving seat also includes a first limiting ring and a second limiting ring arranged at two ends of the main body, and the filter is arranged between the first limiting ring and the second limiting ring and is located on the inner side of the main body.

5. The automatic cleaning and filtering device according to claim 4, wherein, The driving wing further comprises a driving portion disposed on a side of the main body away from the filter screen, the driving portion protruding from the outer peripheral surface of the first limiting ring and being extendable to the first limiting ring and / or the second limiting ring; And / or, a plurality of driving parts of the driving wing are arranged at intervals in the axial direction of the driving seat; And / or, the driving seat further comprises reinforcing ribs, and the reinforcing ribs and the driving wings are arranged on two opposite sides of the filter screen; And / or, the first limiting ring, the second limiting ring and two adjacent driving wings together form a through hole that avoids the filtering hole.

6. The automatic cleaning and filtering device according to claim 1, characterized in that, The inlet is arranged asymmetrically with respect to the center line of the drive seat; And / or, the axes of the sewage outlet and the inlet may be arranged at an angle; And / or, the sewage outlet and the inlet may be staggered in the extension direction of the rotation axis of the driving seat; or the axes of the sewage outlet and the inlet may be overlapped.

7. The automatic cleaning and filtering device according to claim 1, wherein, The automatic cleaning filter device also includes a sewage discharge device, and the sewage discharge device is used to open or close the sewage discharge port.

8. The automatic cleaning and filtering device according to any one of claims 1 to 7, characterized in that, The device body comprises a first pipe section and a second pipe section, wherein the first pipe section is provided with the inlet and the sewage outlet, and the second pipe section is laterally connected to the first pipe section and is provided with the outlet.

9. The automatic cleaning and filtering device according to claim 8, characterized in that, The automatic cleaning filter device also includes a plug structure sealed and connected to the outlet, the filter structure can be rotatably installed between the end of the plug structure and the pipe wall of the first pipe section, and the plug structure is provided with a medium output channel connected to the filter cavity.

10. The automatic cleaning and filtering device according to claim 9, wherein, A first limiting boss is convexly formed on the wall of the first pipe section, and a first limiting hole adapted to the first limiting boss is formed on the driving seat; And / or, a second limiting boss is convexly provided at the end of the plug structure, a rotating seat is rotatably mounted on the second limiting boss, and the driving seat is fixed to the rotating seat; And / or, the plug structure is provided with a limiting ring protrusion for abutting against the edge of the outlet; And / or, the second pipe section is provided with a through hole for the limit clamp to pass through, the plug structure is provided with a clamp ring groove, the limit clamp passes through the through hole and is limited in the clamp ring groove; And / or, the second pipe section is further provided with a sealing ring groove, the sealing ring is embedded in the sealing ring groove, and one side away from the sealing ring groove abuts against the pipe wall of the second pipe section.

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