Self-cleaning sieve filter for agricultural irrigation and automatic control system for it

Abstract

The invention discloses a self-cleaning sieve filter for agricultural irrigation and an automatic control method for it and belongs to the technical field of filters.The sieve filter comprises a box, wherein a movable block is provided inside the box, wherein a circular receiving groove is provided on one side of the movable block, wherein an annular rotating frame is rotatably provided in the receiving groove (21), wherein the rotating frame is distributed circumferentially with a number of rotary grooves, wherein a sieve is arranged inside the rotary groove, wherein the movable block is provided with a water inlet, a water outlet and a drain outlet, wherein the water inlet, the water outlet (24) and the drain outlet are each aligned with a rotary groove, wherein a water inlet pipe, a water outlet pipe and a drain pipe are attached to the outside of the box, wherein the water inlet pipe, the water outlet pipe and the drain pipe are aligned with the position of the water inlet, the water outlet and the drain pipe respectively.The outlet corresponds to the drain pipe, which is equipped with a valve, and the water outlet pipe is located higher than the drain pipe. A self-cleaning sieve filter for agricultural irrigation and an automatic control method in this application ensure that fertilizer particles are allowed to pass through.

Description

TECHNICAL AREA

[0001] The present invention relates to the technical field of filters and in particular to a self-cleaning sieve filter for agricultural irrigation and an automatic control method therefor. STATE OF THE ART

[0002] Existing agricultural irrigation systems typically use sieve filters to filter the irrigation water, and these systems are also used to spray fertilizer water.

[0003] However, if the temperature is too low or too little water is added during preparation, the fertilizer will not dissolve completely. At this point, the fertilizer particles in the fertilizer solution will be filtered out, resulting in insufficient fertilizer application, inadequate nutrient supply to the vegetables, and impaired vegetable growth.

[0004] Therefore, it is necessary to provide a self-cleaning sieve filter for agricultural irrigation and an automatic control procedure for it in order to solve the aforementioned problem. CONTENT OF THE PRESENT INVENTION

[0005] Based on the aforementioned problems of the prior art, one objective of the embodiments of the present application is to provide a self-cleaning sieve filter for agricultural irrigation and an automatic control method for it in order to achieve the effect of allowing fertilizer particles to pass through.

[0006] The technical solutions used by this application to solve its technical problems are: A self-cleaning screen filter for agricultural irrigation and an automatic control method therefor, comprising a box, wherein a movable block is provided inside the box, wherein a circular receiving groove is provided on one side of the movable block, wherein an annular rotating frame is rotatably provided in the receiving groove, wherein the rotating frame is distributed circumferentially with a number of rotary grooves, wherein a screen is arranged inside the rotary groove, wherein the movable block is provided with a water inlet, a water outlet and a drain outlet, wherein the water inlet, the water outlet and the drain outlet are each aligned with a rotary groove, wherein a water inlet pipe, a water outlet pipe and a drain pipe are attached to the outside of the box, wherein the water inlet pipe,The water outlet pipe and the drain pipe correspond to the position of the water inlet, the water outlet and the drain outlet respectively, wherein the drain pipe is equipped with a valve, and the water outlet pipe is higher than the drain pipe.

[0007] Furthermore, several first guide rails are attached to the inner wall of the box, the longitudinal direction of the first guide rails being parallel to the axis of rotation of the rotating frame, the movable block being slidably connected to the first guide rails, several telescopic rods being attached to one side of the outer wall of the box, the extension rod of the telescopic rods extending into the interior of the box and then being attached to one side of the movable block.

[0008] Furthermore, a drive shaft is rotatably connected between the two ends of the interior of the box, a sleeve is fixed in the center of rotation of the rotating frame, the sleeve is slidably placed on the drive shaft, a drive is attached on one side outside the box and the output shaft of the drive is attached to the drive shaft.

[0009] Furthermore, the rotary frame is distributed circumferentially with a number of rotary grooves, and wherein the rotary grooves are all provided inside with a lifting frame, wherein the sieve is attached to a side of the lifting frame facing away from the sleeve, wherein a lifting guide rail is arranged on both sides of the rotary groove, and wherein the lifting frame is slidably connected to the lifting guide rails.

[0010] Furthermore, a guide groove is provided on the bottom surface of the receiving groove, wherein a through groove is provided on one side of the rotary groove, wherein a guide rod is attached to one side of the lifting frame and one end of the guide rod passes through the through groove and then extends into the guide groove.

[0011] Furthermore, the guide groove comprises a first arc-shaped groove and a second arc-shaped groove, wherein the radius of the first arc-shaped groove is larger than the radius of the second arc-shaped groove, wherein the connecting groove is connected between the two ends of the first arc-shaped groove and the two ends of the second arc-shaped groove, wherein the water inlet and the water outlet both correspond to the position of the first arc-shaped groove, and wherein the drain outlet corresponds to the position of the second arc-shaped groove.

[0012] A method for automatically controlling a self-cleaning screen filter for agricultural irrigation, comprising a control system, wherein a flow sensor is provided in the water outlet, a water supply device is connected to the water inlet, and an irrigation device is connected to the water outlet, wherein the irrigation device, a water supply device, a flow sensor, an actuator, and a valve are all connected to the control system, and wherein an irrigation system and a fertilizer application system are provided in the control system. Furthermore, when the irrigation system is in operation, the movable block overlaps with the position of the water inlet pipe, the water outlet pipe, and the discharge pipe, activating the water supply device and supplying the irrigation water to the irrigation device through the box while the valve is closed.wherein the flow sensor is used to detect the flow of irrigation water at the water outlet; wherein a flow threshold of the irrigation water at the water outlet is set in the control system; and wherein, when the flow of irrigation water at the water outlet is lower than the flow threshold, the actuator starts and drives the rotary frame to rotate, so that the water inlet, water outlet, and drain outlet are switched to a different rotary groove while the valve is open; and wherein, after the water inlet, water outlet, and drain outlet have all been switched to a different rotary groove, the valve is closed.

[0013] Furthermore, when the fertilizer application system is in operation, the telescopic rod drives the movable block so that it is offset with the position of the water inlet pipe, the water outlet pipe and the drain pipe, the valve is closed, the water supply device is activated to supply the fertilizer water to the irrigation device through the box, with at this time the fertilizer water passing directly through the box to the irrigation system.

[0014] The advantageous effects of the present invention are: When the irrigation system is in operation, the irrigation water preferentially flows out of the drain outlet because the valve is open and the drain outlet is lower than the water outlet. At this point, the irrigation water backwashes the strainer at the drain outlet, flushing away any impurities that may be present and allowing the strainer to drain out. This creates a self-cleaning effect, enabling the strainer to be recycled.

[0015] When the fertilizer application system is in operation, the fertilizer solution can be directed straight through the housing into the irrigation system due to the offset positioning of the movable block and the water inlet, outlet, and drain pipes. The elimination of the sieve prevents fertilizer particles from clogging the system and reducing the effectiveness of the fertilizer irrigation. BRIEF DESCRIPTION OF THE DRAWING

[0016] The accompanying drawings, which form part of the present invention, serve to further illustrate the invention, and the schematic embodiments of the invention and their figures serve to explain the invention and do not constitute an unreasonable limitation of the invention. In the figures: Fig. Figure 1 shows a schematic overview of a self-cleaning sieve filter for agricultural irrigation within the context of the present application; Fig. Figure 2 shows a schematic exploded view of a self-cleaning sieve filter for agricultural irrigation; Fig. Figure 3 shows a first schematic representation of a self-cleaning sieve filter for agricultural irrigation in Fig. 2; Fig. Figure 4 shows a second schematic representation of a self-cleaning sieve filter for agricultural irrigation in Fig. 2; Fig. Figure 5 shows a schematic structural representation of the guide groove in Fig. 2; Fig. Figure 6 shows a schematic structural representation of a rotating frame in Fig. 2; and Fig. Figure 7 shows an enlarged view of part A in Fig. 6. Reference symbol list: 1, Box; 11, First guide rail; 12, Telescopic rod; 13, Drive shaft; 14, Drive; 15, Water outlet pipe; 16, Water outlet pipe; 17, Drain pipe; 171, Valve; 2. Movable block; 22. Receiving groove; 223. Guide groove; 221. First arcuate groove; 222. Second arcuate groove; 223. Connecting groove; 24. Water inlet; 25. Drain outlet; 3. Rotating frame; 31. Sleeve; 32. Rotary groove; 321. Lifting guide rails; 322. Through groove; 33. Lifting frame; 331. Strainer; 332. Guide rod. DETAILED DESCRIPTION

[0017] It should be noted that the embodiments and features of the embodiments in the present application can be combined with one another. The present invention is described in detail below with reference to the accompanying drawings and exemplary embodiments.

[0018] It should be noted that, unless otherwise stated, all technical and scientific terms used in this application have the same meaning as generally understood by the person skilled in the art in the technical field to which this application belongs.

[0019] Unless otherwise specified, in the present invention, directions such as "top" and "bottom" normally refer to the direction shown in the drawings or to the vertical, perpendicular, or gravitational direction. For ease of understanding and description, directions such as "left" and "right" normally refer to the left and right sides shown in the drawings; "inside and outside" refer to the inside and outside relative to the contours of each component itself; however, the above directional terms are not used to limit the present invention.

[0020] As in the Fig.As shown in Figures 1-7, the present application provides a self-cleaning sieve filter for agricultural irrigation, comprising a box 1, wherein a movable block 2 is provided inside the box 1, wherein a circular receiving groove 21 is provided on one side of the movable block 2, wherein an annular rotating frame 3 is rotatably provided in the receiving groove 21.

[0021] Several first guide rails 11 are attached to the inner wall of the box 1, the longitudinal direction of the first guide rails 11 being parallel to the axis of rotation of the rotating frame 3, the movable block 2 being slidably connected to the first guide rails 11, and several telescopic rods 12 being attached to one side of the outer wall of the box 1, the extension rod of the telescopic rods 12 extending into the interior of the box 1 and then being attached to one side of the movable block 2.

[0022] A drive shaft 13 is rotatably connected between the two ends of the interior of the box 1, a sleeve 31 is fixed in the center of rotation of the rotating frame 3, and the sleeve 31 is slidably mounted on the drive shaft 13. A drive 14 is attached on one side outside the box 1. In this embodiment, the drive is a motor, with the output shaft of the drive 14 attached to the drive shaft 13.

[0023] The rotating frame 3 is distributed circumferentially with a number of rotary grooves 32, wherein the rotary grooves 32 are all provided inside with a lifting frame 33, wherein the sieve 331 is attached to a side of the lifting frame 33 facing away from the sleeve 31.

[0024] A lifting guide rail 321 is arranged on both sides of the rotary groove 32, wherein the lifting frame 33 is slidably connected to the lifting guide rails 321.

[0025] A guide groove 22 is provided on the bottom surface of the receiving groove 21, wherein the guide groove 22 comprises a first arc-shaped groove 221 and a second arc-shaped groove 222, wherein the radius of the first arc-shaped groove 221 is larger than the radius of the second arc-shaped groove 222, wherein the second arc-shaped groove 222 is located on the underside of the first arc-shaped groove 221, wherein the radius of the first arc-shaped groove 221 is larger than the radius of the second arc-shaped groove 222, and wherein the connecting groove 223 is connected between the two ends of the first arc-shaped groove 221 and the two ends of the second arc-shaped groove 222.

[0026] A through groove 322 is provided on one side of the pivot groove 32, wherein a guide rod 332 is attached to one side of the lifting frame 33 and one end of the guide rod 332 passes through the through groove 322 and then extends into the guide groove 22.

[0027] The two sides of the movable block 2 are each provided with a water inlet 23 and a water outlet 24. A drain outlet 25 is provided on the underside of the movable block 2, wherein the water inlet 23, the water outlet 24, and the drain outlet 25 are each aligned with a pivot groove 32, the water inlet 23 and the water outlet 24 both corresponding to the position of the first arcuate groove 221, and the drain outlet 25 corresponding to the position of the second arcuate groove 222. A water inlet pipe 15, a water outlet pipe 16, and a drain pipe 17 are attached to the outside of the box 1, the water inlet pipe 15, the water outlet pipe 16, and the drain pipe 17 corresponding to the positions of the water inlet 23, the water outlet 24, and the drain outlet 25, respectively.

[0028] The drain pipe 17 is equipped with a valve 171.

[0029] By telescoping the telescopic rod 12, it is possible to move the movable block 2 inside the box 1 so that the movable block 2 overlaps with the position of the water inlet pipe 15, the water outlet pipe 16 and the drain pipe 17, or that the movable block 2 leaves the position of the water inlet pipe 15, the water outlet pipe 16 and the drain pipe 17.

[0030] A method for the automatic control of a self-cleaning screen filter for agricultural irrigation, comprising a control system, wherein a flow sensor is provided in the water outlet 24, a water supply device is connected to the water inlet 23, and an irrigation device is connected to the water outlet 24, wherein the irrigation device, a water supply device, a flow sensor, an actuator 14, and a valve 171 are all connected to the control system, and wherein an irrigation system and a fertilizer application system are provided in the control system. When the irrigation system is in operation, the movable block 2 overlaps with the position of the water inlet pipe 15, the water outlet pipe 16, and the discharge pipe 17, thereby activating the water supply device and supplying the irrigation water to the irrigation device through the box 1, while the valve 171 is closed.wherein the flow sensor is used to detect the flow of irrigation water at the water outlet 24; wherein a flow threshold of the irrigation water at the water outlet 24 is set in the control system; and wherein, when the flow of irrigation water at the water outlet 24 is lower than the flow threshold, the actuator 14 starts and drives the rotary frame 3 to rotate, so that the water inlet 23, the water outlet 24 and the drain outlet 25 are switched to a different rotary groove 32 while the valve 171 is open; and wherein, after the water inlet 23, the water outlet 24 and the drain outlet 25 have all been switched to a different rotary groove 32, the valve 171 is closed.

[0031] When, in the procedure described above, the water supply unit transports irrigation water to the irrigation unit, the impurities in the irrigation water are filtered out by the sieve 331 at the water outlet 24, and if the flow rate of the irrigation water at the water outlet 24 is too low, this means that most of the filter holes of the sieve 331 at the water outlet 24 are blocked.

[0032] When the drive 14 is started, the screen 331 at the water inlet 23, at the water outlet 24 and at the drain outlet 25 can be replaced by rotating the rotating frame 3, so that the screen 331 at the water inlet 23 can be replaced by an unblocked screen 331, so that filtration can continue when the water supply to the irrigation device is resumed, thus avoiding the disassembly of the machine which is required in the prior art for cleaning the screens 331.

[0033] When the actuator 14 is activated, the clogged screen 331 at the water inlet 23 moves towards the drain outlet 25, so that the drain outlet 25 is replaced by a screen 331 clogged with impurities. When the valve 171 is opened, the irrigation water preferentially flows out of the drain outlet 25, as the height of the drain outlet 25 is lower than the height of the water outlet 24. At this point, the irrigation water backwashes the screen 331 at the drain outlet 25, flushing away the impurities on the screen 331 and allowing it to drain out of the drain outlet 17. This achieves a self-cleaning effect for the screen 331, enabling the screen 331 to be recycled.

[0034] By guiding the guide rod 332 through the guide groove 22, the lifting frame 33 drives the sieve 331 to move in the rotary groove 32 as the rotating frame 3 rotates. The first arc-shaped groove 221 causes the sieve 331 to be located near the sleeve 31 at the end of the rotary groove 32, creating a gap between the sieve 331 and the inner wall of the receiving groove 21. This gap allows the sieve 331 to remove any impurities inside the device as it moves from the water inlet 23 to the drain outlet 25, thus preventing the inner wall of the water inlet 23 from scraping the impurities off the sieve 331 and ensuring that the impurities are cleaned.The second arc-shaped groove 222 allows the screen 331 to be positioned at the end of the rotary groove 32 furthest from the sleeve 31, so that the screen 331 fits against the inner wall of the receiving groove 21. Therefore, when the screen 331 exits the drain outlet 25, the inner wall of the drain outlet 25 scrapes the screen 331, thereby scraping away the impurities on the screen 331 that were not backflushed, thus improving the cleaning effect.

[0035] When the fertilizer application system is in operation, the telescopic rod 12 drives the movable block 2 so that it is aligned with the positions of the water inlet pipe 15, the water outlet pipe 16, and the drain pipe 17. The valve 171 is closed, and the water supply unit is activated to supply the fertilizer water to the irrigation system through the box 1. At this point, the fertilizer water flows directly through the box 1 to the irrigation system. The elimination of the sieve 331 prevents the fertilizer particles in the fertilizer water from clogging and reducing the effectiveness of the fertilizer irrigation. After the fertilizer water has been irrigated, the water supply unit begins supplying clean water. Simultaneously, the valve 171 opens to drain the remaining fertilizer water from the box 1, and the remaining fertilizer particles are flushed away with the clean water.Finally, the valve 171 and the water supply device are closed, and the telescopic rod 12 drives the movable block 2 back.

[0036] Obviously, the embodiments described above are only some of the embodiments of the present invention and not all embodiments. All other embodiments that can be achieved by a person skilled in the art without inventive effort based on the embodiments in the present invention fall within the scope of protection of the present invention.

[0037] It should be noted that the terms used here serve only to describe certain embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used here, singular forms are intended to include plural forms unless the context clearly indicates otherwise. Furthermore, it should be noted that the terms "comprise" and / or "include" in this description indicate the presence of a feature, step, work, device, component, and / or a combination thereof.

[0038] It should be noted that the terms "first", "second", etc., in the description and claims of this application and the drawings mentioned above are used to distinguish similar objects and are not necessarily used to describe a particular sequence or order. It is understood that the data used in this way may be interchangeable, so that the embodiments of the present application described herein may be implemented in a different order than that shown or described here.

[0039] The foregoing descriptions represent only a preferred embodiment of the present invention and are not intended to limit the invention, which is subject to various modifications and variations for those skilled in the art. All modifications, equivalent substitutions, improvements, etc., made within the scope of the spirit and principles of the present invention fall within the scope of protection of the present invention.

[0040] These are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the embodiments mentioned above. All technical solutions that fall within the scope of the invention are covered by the present invention. It should be noted that, for the person skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and that these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

[1] Self-cleaning sieve filter for agricultural irrigation, characterized bythat it comprises a box (1) wherein a movable block (2) is provided inside the box (1), wherein a circular receiving groove (21) is provided on one side of the movable block (2), wherein an annular rotating frame (3) is rotatably provided in the receiving groove (21), wherein the rotating frame (3) is distributed circumferentially with a number of rotary grooves (32), wherein a sieve (331) is arranged inside the rotary groove (32), wherein the movable block (2) is provided with a water inlet (23), a water outlet (24) and a drain outlet (25), wherein the water inlet (23), the water outlet (24) and the drain outlet (25) are each aligned with a rotary groove (32), wherein a water inlet pipe (15), a water outlet pipe (16) and a drain pipe (17) are attached to the outside of the box (1), wherein the water inlet pipe (15), the water outlet pipe (16) and the drain pipe (17)) of the position of the water inlet (23),of the water outlet (24) and the drain outlet (25), wherein the drain pipe (17) is equipped with a valve (171), and the water outlet pipe (16) is located higher than the drain pipe (17). [2] Self-cleaning sieve filter for agricultural irrigation according to claim 1, characterized by , that several first guide rails (11) are attached to the inner wall of the box (1), wherein the longitudinal direction of the first guide rails (11) is parallel to the axis of rotation of the rotating frame (3), wherein the movable block (2) is slidably connected to the first guide rails (11), wherein several telescopic rods (12) are attached to one side of the outer wall of the box (1), wherein the exit rod of the telescopic rods (12) extends into the interior of the box (1) and is then attached to one side of the movable block (2). [3] Self-cleaning sieve filter for agricultural irrigation according to claim 1, characterized by, that a drive shaft (13) is rotatably connected between the two ends of the interior of the box (1), a sleeve (31) is fixed in the center of rotation of the rotating frame (3), the sleeve (31) is slidably placed on the drive shaft (13), a drive (14) is attached on one side outside the box (1) and the output shaft of the drive (14) is attached to the drive shaft (13). [4] Self-cleaning sieve filter for agricultural irrigation according to claim 1, characterized by , that the rotating frame (3) is distributed circumferentially with a number of rotary grooves (32), and wherein the rotary grooves (32) are all provided internally with a lifting frame (33), wherein the sieve (331) is attached to a side of the lifting frame (33) facing away from the sleeve (31), wherein a lifting guide rail (321) is arranged on both sides of the rotary groove (32), and wherein the lifting frame (33) is slidably connected to the lifting guide rails (321). [5] Self-cleaning sieve filter for agricultural irrigation according to claim 1, characterized by , that a guide groove (22) is provided on the bottom surface of the receiving groove (21), a through groove (322) is provided on one side of the pivot groove (32), a guide rod (332) is attached to one side of the lifting frame (33) and one end of the guide rod (332) passes through the through groove (322) and then extends into the guide groove (22). [6] Self-cleaning sieve filter for agricultural irrigation according to claim 1, characterized by, that the guide groove (22) comprises a first arc-shaped groove (221) and a second arc-shaped groove (222), wherein the radius of the first arc-shaped groove (221) is larger than the radius of the second arc-shaped groove (222), wherein the connecting groove (223) is connected between the two ends of the first arc-shaped groove (221) and the two ends of the second arc-shaped groove (222), wherein the water inlet (23) and the water outlet (24) both correspond to the position of the first arc-shaped groove (221), and wherein the drain outlet (25) corresponds to the position of the second arc-shaped groove (222). [7] Method for automatically controlling a self-cleaning sieve filter for agricultural irrigation, comprising a self-cleaning sieve filter for agricultural irrigation according to any one of claims 1 to 6, characterized by, that it comprises a control system, wherein a flow sensor is provided in the water outlet (24), a water supply device is connected to the water inlet (23) and an irrigation device is connected to the water outlet (24), wherein the irrigation device, a water supply device, a flow sensor, an actuator (14) and a valve (171) are all connected to the control system, and wherein an irrigation system and a fertilizer application system are provided in the control system. [8] Method for automatically controlling a self-cleaning sieve filter for agricultural irrigation according to claim 7, characterized by, that when the irrigation system is in operation, the movable block (2) overlaps with the position of the water inlet pipe (15), the water outlet pipe (16) and the drain pipe (17), the water supply device is activated, and the irrigation water is supplied to the irrigation device through the box (1) while the valve (171) is closed, and the flow sensor is used to detect the flow of irrigation water at the water outlet (24); wherein a flow threshold value of the irrigation water at the water outlet (24) is set in the control system; and wherein, when the flow rate of the irrigation water at the water outlet (24) is lower than the flow rate threshold, the drive (14) starts and drives the rotary frame (3) to rotate, so that the water inlet (23), the water outlet (24) and the drain outlet (25) are switched to a different rotary groove (32) while the valve (171) is open;and wherein, after the water inlet (23), the water outlet (24) and the drain outlet (25) have all been switched to a different rotary groove (32), the valve (171) is closed. [9] Method for automatically controlling a self-cleaning sieve filter for agricultural irrigation according to claim 7, characterized by , that when the fertilizer application system is in operation, the telescopic rod (12) drives the movable block (2) so that it is offset with the position of the water inlet pipe (15), the water outlet pipe (16) and the drain pipe (17), the valve (171) is closed, the water supply device is activated to supply the fertilizer water to the irrigation device through the box (1), with the fertilizer water passing directly through the box (1) to the irrigation system at that time.

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