Filtering device

Abstract

The utility model discloses a filtering device, and in particular relates to a vertical auger blade driving double-spraying self-cleaning pump front micro-filtering machine. The filtering device comprises a supporting frame, a filtering assembly, blades and a cleaning mechanism. The filtering assembly is rotatably arranged in the supporting frame through the rotating shaft; the blades sleeve the rotating shaft and are used for rotating under the driving of water flow and driving the filtering assembly to rotate; the cleaning mechanism comprises a first flushing assembly and a second flushing assembly, the first flushing assembly is arranged in the filtering assembly and used for spraying water in the first direction to flush the filtering assembly, and the second flushing assembly is arranged outside the filtering assembly and used for spraying water in the second direction to flush the filtering assembly; the first direction intersects the second direction. According to the utility model, the structure of the filtering device is improved, the cleaning effect is effectively improved, the filtering effect of the filtering device is better and can be kept for a longer time, and the maintenance frequency is favorably reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pre-pump microfilters, in particular to a filtering device. Background Art

[0002] Agricultural water-saving irrigation involves pumping pressurized water through pipes to the roots of plants in the field, dripping it without irrigating crops. Drip irrigation uses tiny channels to drip water. If the irrigation water contains sediment or debris, it can easily clog the drip heads. Therefore, drip irrigation water must be filtered to remove sediment and impurities before use. A pre-pump microfilter is a filter used in water-saving drip irrigation systems. It is applied to the front of the pump's suction pipe to filter the water containing sediment and impurities. This filtered water is then pumped through the pump and supplied to the drip irrigation system.

[0003] The existing pre-pump micro-filter includes a frame, a filter cartridge for filtering, and an outlet pipe for drawing out the filtered water. The filter cartridge is cylindrical, and is provided with a cover for isolating water on the upper and lower parts. The outer surface of the filter cartridge is covered with a filter mesh woven with metal wire. The working water level of the filter cartridge is always maintained at a certain level. The filter cartridge immersed in water filters the water. During filtration, the water flows from the outside of the filter cartridge to the inside of the filter cartridge. The mud and sand impurities in the water body are filtered and intercepted on the outer surface of the filter screen of the filter cartridge. After a long period of filtration, a large amount of mud and sand impurities will clog the filter screen, causing water to be unable to enter the filter cartridge, and manual maintenance is often required. Utility Model Content

[0004] The main purpose of the utility model is to provide a filter device, which aims to achieve cleaning of the filter device, avoid clogging of the filter screen, and reduce maintenance frequency.

[0005] To achieve the above-mentioned purpose, the present invention provides a filtering device, comprising:

[0006] Support frame;

[0007] A filter assembly, the filter assembly being rotatably disposed in the support frame via a rotating shaft;

[0008] blades, sleeved on the rotating shaft, the blades being used to rotate under the drive of water flow and drive the filter assembly to rotate; and

[0009] The cleaning mechanism includes a first flushing component and a second flushing component. The first flushing component is arranged inside the filter component and is used to spray water along a first direction to flush the filter component. The second flushing component is arranged outside the filter component and is used to spray water along a second direction to flush the filter component. The first direction and the second direction intersect.

[0010] Optionally, the filter assembly includes a filter cartridge and a filter screen provided on the filter cartridge;

[0011] The first direction is the radial direction of the filter cartridge and is from inside to outside, and the second direction is the tangential direction of the filter cartridge and is from outside to inside.

[0012] Optionally, the first flushing assembly includes a first nozzle and several first nozzles spaced apart on the first nozzle, the second flushing assembly includes a second nozzle and several second nozzles spaced apart on the second nozzle, the first nozzle and the second nozzle are both extended along the axial direction of the filter assembly and are suitable for external high-pressure flushing water pipes, and several of the first nozzles and several of the second nozzles are arranged in an staggered manner or opposite to each other.

[0013] Optionally, the second direction is defined as being tangent to the filter cartridge contour of the filter assembly at point A, the intersection of the first direction and the filter cartridge contour of the filter assembly is point B, and point A and point B coincide on the top projection surface of the filter cartridge.

[0014] Optionally, the water jets of the first nozzle and the second nozzle are both fan-shaped.

[0015] Optionally, the second direction is suitable to be along the flow direction of water.

[0016] Optionally, the rotating shaft is a hollow tube, and the first nozzle is connected to the high-pressure flushing water pipe through the rotating shaft.

[0017] Optionally, the rotating shaft of the blade is connected to the rotating shaft through a driving disc.

[0018] Optionally, a water guide cylinder is provided on the outer periphery of the blade, the upper end of the water guide cylinder forms a water inlet, and the lower end of the water guide cylinder is connected to the water collecting pipe and the water outlet pipe in sequence.

[0019] Optionally, at least one buoy is provided on the top of the support frame.

[0020] In the technical solution of the present invention, the filter device includes a support frame, a filter assembly, blades, and a cleaning mechanism; the filter assembly is rotatably arranged in the support frame via a rotating shaft; the blades are sleeved on the rotating shaft, and the blades are used to rotate under the drive of the water flow and drive the filter assembly to rotate; the cleaning mechanism includes a first flushing assembly and a second flushing assembly, the first flushing assembly is arranged inside the filter assembly, the first flushing assembly is used to spray water in a first direction to flush the filter assembly, and the second flushing assembly is arranged outside the filter assembly, the second flushing assembly is used to spray water in a second direction to flush the filter assembly, and the first direction and the second direction intersect. It can be understood that the present invention improves the structure of the filter device. By providing a cleaning mechanism to flush the filter assembly, clogging of the filter screen is avoided, so that the filtering effect of the filter device is better and can be maintained for a longer time, which is conducive to reducing the maintenance frequency. In addition, the present invention adopts a double-spray self-cleaning structure. Compared with the traditional spray-washing structure, the present invention has a better cleaning effect and can effectively remove blockages in the blind spots of the filter screen, greatly reducing the frequency of manual maintenance of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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 the structures shown in these drawings without paying any creative work.

[0022] Figure 1 This is a front view of an embodiment of the filter device of the present invention;

[0023] Figure 2 This is a side view of an embodiment of the filter device of the present invention;

[0024] Figure 3 A top view of an embodiment of the filter device of the present invention;

[0025] Figure 4 This is a schematic diagram of the cleaning principle of an embodiment of the filter device of the utility model;

[0026] Figure 5 This is a schematic structural diagram of a cleaning mechanism in an embodiment of the filter device of the present invention;

[0027] Figure 6 This is a schematic structural diagram of the first nozzle and the second nozzle in one embodiment of the filtering device of the present invention.

[0028] Description of Figure Numbers:

[0029] 10. Support frame; 20. Filter assembly; 30. Blades; 40. Cleaning mechanism; 51. Rotating shaft; 41. First flushing assembly; 42. Second flushing assembly; 21. Filter cartridge; 22. Filter screen; 411. First nozzle; 412. First nozzle; 421. Second nozzle; 422. Second nozzle; 52. Drive disc; 53. Water guide tube; 54. Water collecting pipe; 55. Water outlet pipe; 60. Float.

[0030] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediary, and internal connections between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0034] In addition, the descriptions of "first", "second", etc. in the present utility model are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution in which both A and B are satisfied. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0035] The utility model provides a filtering device, in particular a vertical auger blade driven double-spray self-cleaning pump front micro-filter, which is not limited here.

[0036] Reference Figures 1 to 3 In one embodiment of the present invention, the filtering device includes a support frame 10, a filter assembly 20, blades 30 and a cleaning mechanism 40; the filter assembly 20 is rotatably arranged in the support frame 10 through a rotating shaft 51; the blades 30 are sleeved on the rotating shaft 51, and the blades 30 are used to rotate under the drive of water flow and drive the filter assembly 20 to rotate; the cleaning mechanism 40 includes a first flushing assembly 41 and a second flushing assembly 42, the first flushing assembly 41 is arranged in the filter assembly 20, and the first flushing assembly 41 is used to spray water along a first direction to flush the filter assembly 20, and the second flushing assembly 42 is arranged outside the filter assembly 20, and the second flushing assembly 42 is used to spray water along a second direction to flush the filter assembly 20, and the first direction and the second direction intersect.

[0037] In this embodiment, the filter assembly 20 may include a filter cartridge 21 and a filter screen 22 covering the outer periphery of the filter cartridge 21 . The filter screen 22 may be woven from metal wires. The upper and lower ends of the filter cartridge 21 may be covered with covers.

[0038] In order to ensure that the filter device is in a suitable working position during operation, floats 60 can be provided on both sides of the upper portion of the support frame 10 so that the filter device can float on the water surface and the filter assembly 20 can be in a target position underwater.

[0039] The first flushing component 41 and the second flushing component 42 of the cleaning mechanism 40 can both be connected to an external high-pressure water supply device, which can be connected to the water inlets of the two flushing components through a high-pressure flushing water pipe to provide high-pressure water flow, which can further improve the cleaning effect.

[0040] It can be understood that the present invention improves the structure of the filter device. By providing a cleaning mechanism 40 to flush the filter assembly 20, clogging of the filter screen 22 is avoided, thereby improving the filtering effect of the filter device and maintaining it for a longer period of time, which helps to reduce the maintenance frequency. In addition, the present invention adopts a dual-spray automatic cleaning structure. Compared with the traditional spray cleaning structure, the present invention has a better cleaning effect and can effectively remove blockages in the blind spots of the filter screen 22, significantly reducing the frequency of manual maintenance of the filter screen 22.

[0041] To further improve the flushing effect of the filter 22, refer to Figures 1 to 6 In one embodiment, the first direction may be radial to the filter cartridge 21 and run from the inside out, while the second direction may be tangential to the filter cartridge 21 and run from the outside in. Preferably, the second direction is along the direction of water flow. It should be noted that "along the direction of water flow" means a direction that is generally along the direction of water flow and capable of flushing the filter screen 22, thereby minimizing water flow resistance to the flushing jet.

[0042] In this embodiment, the first flushing component 41 may include a first nozzle 411 and a plurality of first nozzles 412 spaced apart on the first nozzle 411; the second flushing component 42 may include a second nozzle 421 and a plurality of second nozzles 422 spaced apart on the second nozzle 421; the first nozzle 411 and the second nozzle 421 are both extended along the axial direction of the filter component 20 and are suitable for external high-pressure flushing water pipes; the plurality of first nozzles 412 and the plurality of second nozzles 422 are staggered or arranged opposite each other, preferably staggered, to avoid interference between the two flushing water flows and reduce the cleaning effect.

[0043] Furthermore, combined Figure 1 and Figure 4 When the plurality of first nozzles 412 and the plurality of second nozzles 422 are arranged in a staggered or opposite arrangement, the second direction is defined as being tangent to the outline of the filter cartridge 21 of the filter assembly 20 at point A, and the intersection of the first direction and the outline of the filter cartridge 21 of the filter assembly 20 is defined as point B. Points A and B coincide on the top projection of the filter cartridge 21. This achieves a better flushing effect.

[0044] In order to ensure that all positions of the filter screen 22 can be flushed and the flushing effect can be further improved, nozzles with fan-shaped water jets can be used as the first nozzle 412 and the second nozzle 422. The specific structure is shown in the attached figure. Figure 5 and Figure 6 As shown, its injection angle is α.

[0045] Reference Figures 1 to 3In one embodiment, the rotating shaft 51 can be a hollow tube, and the first nozzle 411 is connected to the high-pressure flushing water pipe through the rotating shaft 51. In this embodiment, the rotating shaft 51 not only serves as the central axis of rotation of the filter assembly 20, but also serves to supply flushing water to the first flushing assembly 41, thereby improving the structural compactness of the filter device.

[0046] In this embodiment, in order to improve transmission efficiency, enable the filter cartridge 21 and the blades 30 to rotate synchronously, and ensure filtering efficiency and effect, the rotating shaft of the blades 30 can be connected to the lower cover of the filter cartridge 21 through the drive disk 52.

[0047] Furthermore, a water guide tube 53 may be provided around the outer periphery of the blade 30, with the upper end of the water guide tube 53 forming a water inlet, and the lower end of the water guide tube 53 sequentially connected to a water collecting pipe 54 and a water outlet pipe 55. This arrangement can guide the water flow to the blade 30, helping to improve the driving effect of the blade 30.

[0048] In this embodiment, the post-filtration water outlet pipe 55 of the filtering device can be connected to a water pump through a hose. The water pump sucks the clean water filtered by the filter cartridge 21. When sucking the water in the filter cartridge 21, the water outside the filter cartridge 21 will continuously flow into the filter cartridge 21 through the filter mesh 22, and the filtering work will be continuously performed. During operation, the filter mesh 22 will intercept mud and impurities in the water body. At this time, the cleaning mechanism 40 automatically cleans the filter cartridge 21.

[0049] It is worth mentioning that the filtration device of the present invention utilizes the power of the water source drawn by the water pump. The rotational torque generated by the auger blade 30 within the water guide cylinder 53 located below the filter cartridge 21 is transmitted through the axis of the auger blade 30 to the drive disk 52. The drive disk 52 is connected to the lower cover of the filter cartridge 21. The torque is then transmitted to the filter cartridge 21, driving the filter cartridge 21 to rotate synchronously. When the filter cartridge 21 rotates, the filter screen 22 on its circumferential surface moves relative to the water body, allowing the sediment intercepted during filtration to easily escape from the filter screen 22.

[0050] In summary, the filter device of the present invention is provided with nozzles for flushing water flow of the same or different pressures inside and outside the filter barrel 21, and nozzles capable of spraying fan-shaped water flow are evenly distributed on the nozzles. Multiple nozzles spray at high speed simultaneously to form a unique linear high-beam flushing water flow. Among them, the nozzles provided inside the filter barrel 21 spray water flow perpendicular to the filter screen 22, and spray flushing (also called backwashing) from the inside through the filter screen 22 to the outside at high speed. The vertical flushing water flow has the greatest force and can effectively flush the mud and sand impurities intercepted on the outer surface of the filter screen 22 away from the filter screen 22. At the same time, the nozzles provided outside the filter barrel 21 spray water in the tangential direction of the filter barrel 21, flushing the mud and sand impurities flushed away from the filter screen 22 by the nozzles of the inner nozzles away from the filter barrel 21 at high speed. The powerful high-speed water flow sprayed along the tangential direction flushes the mud and sand impurities away from the filter screen 22 to a position farther away from the filter barrel 22, so that the filter screen 22 on the circumferential surface of the filter barrel 21 is effectively cleaned, maintaining a continuous and efficient filtering function.

[0051] It is worth mentioning that in the existing technology, agricultural water-saving irrigation filtration devices, especially pre-pump filtration devices in a floating working state, are mainly horizontal, and their filtration structure and water outlet structure are arranged horizontally.

[0052] However, the filter device of the present invention adopts a vertical layout, which is suitable for filtering small pools and has a wider range of applications. In addition, the filter cartridge 21 of the present invention uses the rotary power of the filtered water flow to achieve filtering rotation by the hinged dragon blades 30, and the filtering rotation easily separates the intercepted sediment. In addition, the present invention uses the rotary torque generated by the hinged dragon blades 30 set in the water guide tube 53 when the water flows through to drive the filter cartridge 21 to rotate. There is no need to set up other drive mechanisms to drive the cleaning mechanism 40 or the filter cartridge 21 to rotate, and basically no energy is consumed. The resistance of the filter cartridge 21 when it rotates around the axis is also very small, which can easily form high-speed rotation motion.

[0053] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by utilizing the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A filtering device, characterized in that: include: Support frame; A filter assembly, the filter assembly being rotatably disposed in the support frame via a rotating shaft; Blades are sleeved on the rotating shaft, and are used to rotate under the drive of water flow and drive the filter assembly to rotate; as well as The cleaning mechanism includes a first flushing component and a second flushing component. The first flushing component is arranged inside the filter component and is used to spray water along a first direction to flush the filter component. The second flushing component is arranged outside the filter component and is used to spray water along a second direction to flush the filter component. The first direction and the second direction intersect.

2. The filtering device according to claim 1, wherein The filter assembly includes a filter cartridge and a filter screen provided on the filter cartridge; The first direction is the radial direction of the filter cartridge and is from inside to outside, and the second direction is the tangential direction of the filter cartridge and is from outside to inside.

3. The filtering device according to claim 2, characterized in that The first flushing assembly includes a first nozzle and several first nozzles spaced apart on the first nozzle; the second flushing assembly includes a second nozzle and several second nozzles spaced apart on the second nozzle; the first nozzle and the second nozzle are both extended along the axial direction of the filter assembly and are suitable for external high-pressure flushing water pipes; the several first nozzles and the several second nozzles are arranged in an staggered manner or opposite to each other.

4. The filtering device according to claim 3, wherein The second direction is defined as being tangent to the filter cartridge contour of the filter assembly at point A, the intersection of the first direction and the filter cartridge contour of the filter assembly is point B, and point A and point B coincide on the top projection surface of the filter cartridge.

5. The filtering device according to claim 3, wherein The water jets from the first nozzle and the second nozzle are both fan-shaped.

6. The filtering device according to claim 2, wherein: The second direction is suitable to be along the flow direction of water.

7. The filtering device according to claim 3, characterized in that The rotating shaft is a hollow tube, and the first nozzle is connected to the high-pressure flushing water pipe through the rotating shaft.

8. The filtering device according to claim 7, wherein The rotating shaft of the blade is connected to the filter cartridge through a driving disk.

9. The filtering device according to claim 8, characterized in that A water guide cylinder is sleeved on the outer periphery of the blade, the upper end of the water guide cylinder forms a water inlet, and the lower end of the water guide cylinder is connected to the water collecting pipe and the water outlet pipe in sequence.

10. The filtering device according to claim 7, wherein At least one buoy is provided on the top of the support frame.

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