Filtering device

Abstract

The invention discloses a filtering device, and particularly 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. 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 reduced.

Description

Technical Field

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

[0002] Agricultural water-saving irrigation is to pump water to increase pressure, and then transport it to the roots of plants in the field through pipes, without irrigating crops in a dripping manner. Drip irrigation uses water pipes with tiny holes to drip water. The aperture of the dripping water is very small. If there are silt and debris in the irrigation water, it is easy to cause the drip head to be blocked. Therefore, the drip irrigation water for water-saving irrigation must be filtered by water filtration equipment to filter out the silt and impurities in the water before it can be used. The pre-pump microfilter is a filtering device used in the water-saving irrigation drip irrigation system. It is used at the front end of the water pump pipe to filter the water with silt and impurities first, and then the water sucked and filtered by the water pump is supplied to the drip irrigation water.

[0003] The existing pre-pump micro-filter includes a frame, a filter cartridge for filtering, and an outlet pipe for leading out water after filtration. The filter cartridge is cylindrical, and is respectively provided with a cover for isolating water on the upper and lower parts. The outer peripheral 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 kept constant. 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 silt and 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 silt and impurities will clog the filter screen, causing water to be unable to enter the filter cartridge, and manual maintenance is often required. Summary of the invention

[0004] The main purpose of the present invention is to provide a filter device, aiming to achieve cleaning of the filter device, avoid clogging of the filter screen, and reduce the maintenance frequency.

[0005] To achieve the above object, 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, wherein 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, and 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, and the first direction intersects with the second direction.

[0010] Optionally, the filter assembly includes a filter cartridge and a filter screen disposed 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 a plurality of first nozzles spaced apart on the first nozzle, the second flushing assembly includes a second nozzle and a plurality of 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 externally connected high-pressure flushing water pipes, and the plurality of the first nozzles and the plurality of the second nozzles are staggered or arranged opposite each other.

[0013] Optionally, the second direction is defined to be 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 via a driving disc.

[0018] Optionally, a water guide cylinder is sleeved on the outer periphery of the blade, the upper end of the water guide cylinder forms a water guide inlet, and the lower end of the water guide cylinder is connected to a water collecting pipe and a 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 through 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 in the filter assembly, the first flushing assembly is used to spray water in a first direction to flush the filter assembly, the second flushing assembly is arranged outside the filter assembly, and the second flushing assembly is used to spray water in a second direction to flush the filter assembly, and the first direction intersects with the second direction. It can be understood that the present invention improves the structure of the filter device, and by arranging a cleaning mechanism to flush the filter assembly, the filter screen is prevented from being blocked, 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 cleaning effect of the present invention is better, and the blockage in the dead corner of the filter screen can be effectively removed, which greatly reduces the manual maintenance frequency 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 drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

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

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

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

[0025] Figure 4 A schematic diagram of the cleaning principle of an embodiment of a filter device of the present invention;

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

[0027] Figure 6 Schematic diagram of the structure 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 cylinder; 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 described embodiments 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 in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the 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 the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In addition, the descriptions of "first", "second", etc. in the present invention are only used 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 that satisfies both A and B. 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 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 invention.

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

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

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

[0039] The first flushing component 41 and the second flushing component 42 of the cleaning mechanism 40 can both be externally connected to a 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, and by providing a cleaning mechanism 40 to flush the filter assembly 20, the filter screen 22 is prevented from being blocked, 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 automatic cleaning structure. Compared with the traditional spray washing structure, the present invention has a better cleaning effect and can effectively remove the blockage in the dead corner of the filter screen 22, greatly reducing the manual maintenance frequency of the filter screen 22.

[0041] To further improve the flushing effect of the filter screen 22, refer to Figures 1 to 6In one embodiment, the first direction may be the radial direction of the filter cartridge 21 and from inside to outside, and the second direction may be the tangential direction of the filter cartridge 21 and from outside to inside. Preferably, the second direction is suitable for being along the flow direction of the water flow. It should be noted that along the flow direction of the water flow means that the direction is roughly along the flow direction of the water flow and can flush the filter screen 22, so that the water flow resistance of the flushing jet can be reduced as much as possible.

[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 externally connected 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 with Figure 1 and Figure 4 When the plurality of first nozzles 412 and the plurality of second nozzles 422 are arranged in a staggered manner or facing each other, the second direction is defined to be tangent to the contour line of the filter cartridge 21 of the filter assembly 20 at point A, and the intersection of the first direction and the contour line of the filter cartridge 21 of the filter assembly 20 is point B, and point A and point B coincide on the top projection surface of the filter cartridge 21. In this way, a better flushing effect can be achieved.

[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 5 and Figure 6 As shown, its injection angle is α.

[0045] Reference Figures 1 to 3 In 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 transport flushing water to the first flushing assembly 41, which is conducive to improving the compactness of the structure of the filter device.

[0046] In this embodiment, in order to improve the transmission efficiency, enable the filter cartridge 21 and the blades 30 to rotate synchronously and ensure the 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 driving disk 52.

[0047] Furthermore, a water guide cylinder 53 may be sleeved around the outer periphery of the blade 30, the upper end of the water guide cylinder 53 forms a water guide inlet, and the lower end of the water guide cylinder 53 is sequentially connected to the water collecting pipe 54 and the water outlet pipe 55. In this way, the water flow can be directed to the blade 30, which helps 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 via 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 net 22, and the filtering work will be continuously performed. During operation, the filter net 22 will intercept mud and impurities in the water body, and at this time, the cleaning mechanism 40 automatically cleans the filter cartridge 21.

[0049] It is worth mentioning that the filtering device of the present invention utilizes the power of the water source sucked by the water pump, and the rotational torque generated by the auger blade 30 in the water guide cylinder 53 disposed at the lower part of the filter cylinder 21 when the water flows, and the rotational torque is transmitted to the drive disk 52 through the auger blade 30 shaft. The drive disk 52 is connected to the lower cover of the filter cylinder 21, and the torque is continuously transmitted to the filter cylinder 21, driving the filter cylinder 21 to rotate synchronously. When the filter cylinder 21 rotates, the filter screen 22 on its circumferential surface moves relative to the water body, and the sediment intercepted during filtration can be easily separated from the filter screen 22.

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

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

[0052] However, the filtering device of the present invention adopts a vertical layout, which is suitable for the application scenario of filtering small pools and has a wider range of applications. In addition, the filter cartridge 21 of the present invention uses the rotational power of the flow of filtered water by the auger blade 30 to achieve filtering rotation, and the silt intercepted by the filtering rotation is easily separated. In addition, the present invention uses the rotational torque generated by the auger blade 30 set in the water guide cylinder 53 when the water flows through to drive the filter cartridge 21 to rotate. There is no need to set up other driving 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 is also very small when it rotates around the axis, and it is easy to form a high-speed rotation motion.

[0053] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied 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 the blades 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, wherein 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, and 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, and the first direction intersects with the second direction.

2. The filtering device according to claim 1, characterized in that The filter assembly includes a filter cartridge and a filter screen disposed 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 a plurality of first nozzles spaced apart on the first nozzle, the second flushing assembly includes a second nozzle and a plurality of 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 externally connected high-pressure flushing water pipes, and the plurality of the first nozzles and the plurality of the second nozzles are staggered or oppositely arranged.

4. The filtering device according to claim 3, characterized in that The second direction is defined to be 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, characterized in that: The water jets from the first nozzle and the second nozzle are both fan-shaped.

6. The filtering device according to claim 2, characterized in that: 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, characterized in that The rotating shaft of the blade is connected to the filter cartridge through a driving disc.

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 guide inlet, and the lower end of the water guide cylinder is connected to a water collecting pipe and a water outlet pipe in sequence.

10. The filtering device according to claim 7, characterized in that: At least one buoy is arranged on the top of the support frame.

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