Anti-blocking type rice planting water-saving irrigation device and method

Abstract

The invention discloses an anti-blocking water-saving irrigation device for rice planting. The device comprises an outer cylinder, a rubber sealing gasket, a fan-shaped plugging piece, a fixing column, an adapter pipe, an inner cylinder, an irrigation pipe, a first driving assembly and a second driving assembly; the upper end of the outer cylinder is connected with a flange plate, the multiple rubber sealing gaskets are arranged on the circumference and fixed to the lower end of the outer cylinder in a sealed mode, the multiple fan-shaped plugging pieces are arranged on the circumference and fixed to the lower ends of the multiple rubber sealing gaskets respectively, the lower ends of the multiple fan-shaped plugging pieces are attached to one another, the fixing column is fixed to the inner wall of the outer cylinder, and a through hole is formed in the center of the fixing column in the vertical direction; the inner cylinder is coaxially fixed to the lower end of the fixing column and communicated with the through hole, the upper end of the irrigation pipe is slidably arranged in the through hole, the lower end of the irrigation pipe slidably penetrates through the bottom of the inner cylinder, the first driving assembly is arranged in the inner cylinder, and the second driving assembly is arranged below the first driving assembly.

Description

Technical Field

[0001] The invention relates to the technical field of rice planting irrigation, and in particular to an anti-blocking type rice planting water-saving irrigation device and method. Background Art

[0002] The rice planting irrigation device uses a water pump to extract water from groundwater or ponds and transport it to the rice fields. Traditional irrigation devices are mostly composed of a water pump and several water pipes. The water pump is directly placed in the pond or groundwater to complete the water pumping process. However, the end of the irrigation pipe used for irrigation is external, and in order to increase the irrigation area, the irrigation end usually uses a porous nozzle, which causes the end of the irrigation pipe to be in the external environment for a long time. The dust in the air will gather and condense at the end, causing blockage. At the same time, the dust attached to the outer wall of the irrigation pipe will form muddy water when it meets water, flow to the end and condense into blocks, which will block the end of the irrigation pipe, resulting in poor water flow and affecting irrigation efficiency.

[0003] Therefore, it is necessary to invent an anti-blocking type rice planting water-saving irrigation device to solve the above problems. Summary of the invention

[0004] In view of the above problems, the present invention provides an anti-blocking type rice planting water-saving irrigation device, which solves the problem of end blockage caused by irrigation pipes being in the external environment for a long time.

[0005] The technical solution adopted by the present invention is: comprising.

[0006] A blocking-proof rice planting water-saving irrigation method is as follows: S1: Before irrigation, the outer cylinder is installed on the external connection valve through the flange. When the rice needs to be irrigated, the external connection valve is opened, and the servo motor is started at the same time. The external water flows into the through hole through the transfer tube, and the introduced water in the through hole is discharged through the irrigation pipe; S2: After the servo motor is started, the irrigation pipe is driven to move downward through the first driving assembly and penetrate the multiple fan-shaped blocking pieces, so that the multiple fan-shaped blocking pieces that are gathered together are opened. When the lower end of the irrigation pipe moves to a fixed position under the multiple fan-shaped blocking pieces, it stops moving and irrigation is carried out; S3: When the irrigation pipe is irrigating, the servo motor drives the cleaning brush through the second drive assembly to wipe the outer wall of the lower end of the irrigation pipe up and down; S4: After the irrigation is completed, the external connection valve is closed, and the servo motor is turned off at the same time. The irrigation pipe and the cleaning brush will move to the upper side of the multiple fan-shaped sealing pieces, so that the multiple fan-shaped sealing pieces will return to the state of being gathered together.

[0007] Advantages of the present invention: By using the first driving component and the second driving component, on the one hand, it can enable the irrigation pipe to extend from multiple sector-shaped sealing pieces only in the irrigation state and always be in a closed environment in the non-irrigation state, thus avoiding the long-term exposure of the irrigation end and preventing the sediment and dust in the air from blocking the end; on the other hand, during the irrigation process, the cleaning brush can wipe and clean the outer wall of the end of the irrigation pipe up and down to prevent the dust in the air from adhering to the outer wall of the irrigation pipe and forming sediment flowing towards the end of the irrigation pipe to cause a blocking phenomenon.

[0008] In addition to the purposes, features and advantages described above, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0010] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a half-sectional view of the overall structure of the present invention; Figure 3 is a schematic diagram of the structure of the first driving component of the present invention; Figure 4 is a connection diagram of the first rotating rod, the second rotating rod and the third rotating rod of the present invention; Figure 5 is a side-sectional view of the cam of the present invention; Figure 6 is an enlarged view of part A of the present invention; Figure 7 is an enlarged view of part B of the present invention; Figure 8 is a sectional view of the sliding ring of the present invention.

[0011] Reference numerals: 1, outer cylinder; 2, rubber gasket; 3, sector plugging piece; 4, fixed column; 5, adapter pipe; 6, inner cylinder; 7, irrigation pipe; 8, first drive assembly; 9, second drive assembly; 11, flange; 41, through hole; 81, servo motor; 82, first rotating rod; 83, second rotating rod; 84, first bevel gear; 85, fixed rod; 86, collar; 87, rotating shaft; 88, second bevel gear; 89, cam; 801, moving disk; 802, fixed disk; 803, first spring; 821, first engaging groove; 822, first pawl; 831, first ratchet; 891, abrasive ring; 91, third rotating rod; 92, first spur gear; 93, sleeve; 94, second spur gear; 95, rotating block; 96, vertical pipe; 97, guide pipe; 98, slider; 99, sliding rod; 901, inclined rod; 902, sliding ring; 903, cleaning brush; 904, second spring; 832, second engaging groove; 833, second pawl; 911, second ratchet; 961, sliding groove; 962, communication hole; 10, hydraulic oil. Detailed implementation manners

[0012] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0013] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0014] Reference Figures 1 to 8, A water-saving irrigation device for anti-blocking rice planting, comprising an outer cylinder 1, a rubber gasket 2, a sector-shaped plugging piece 3, a fixing column 4, a rotary connecting pipe 5, an inner cylinder 6, an irrigation pipe 7, a first driving assembly 8 and a second driving assembly 9; A flange 11 is connected to the upper end of the outer cylinder 1 for sealing installation with an external connecting valve. The rubber gasket 2 is arc-shaped and a plurality of them are circumferentially arranged and fixedly sealed at the lower end of the outer cylinder 1. A plurality of sector-shaped plugging pieces 3 are circumferentially arranged and respectively fixed at the lower ends of the plurality of rubber gaskets 2. The lower ends of the plurality of sector-shaped plugging pieces 3 are mutually attached, and adjacent two sector-shaped plugging pieces 3 are mutually attached. The fixing column 4 is fixed on the inner wall of the outer cylinder 1, and a through hole 41 is axially opened in the center of the fixing column 4 along the vertical direction. The upper end of the rotary connecting pipe 5 is communicated with the flange 11, and the lower end extends into the through hole 41. The inner cylinder 6 is coaxially fixed at the lower end of the fixing column 4 and is communicated with the through hole 41. The upper end of the irrigation pipe 7 is slidably arranged in the through hole 41, and the lower end slidably penetrates through the bottom of the inner cylinder 6. The first driving assembly 8 is arranged in the inner cylinder 6, and the second driving assembly 9 is arranged below the first driving assembly 8.

[0015] Among them, please refer to Figure 1 and Figure 2 , The rubber gasket 2 has elastic recovery ability. That is to say, when an external force is applied to the sector-shaped plugging piece 3, the rubber gasket 2 connected to it will deform to adapt to the angular deflection of the sector-shaped plugging piece 3. At the same time, after the external force on the sector-shaped plugging piece 3 is removed, the rubber gasket 2 will drive this sector-shaped plugging piece 3 to return to the initial position, that is, the lower ends of the plurality of sector-shaped plugging pieces 3 gather and isolate the inside and outside of the outer cylinder 1.

[0016] In addition, the outer cylinder 1 is fixed and communicated with the external connecting valve through the flange 11. That is to say, the outer cylinder 1 is in the external environment for a long time.

[0017] In the present invention, the first driving assembly 8 includes a servo motor 81, a rotating rod 82, a rotating rod 83, a bevel gear 84, a fixed rod 85, a collar 86, a rotating shaft 87, a bevel gear 88, a cam 89, a movable plate 801, a fixed plate 802 and a spring 803; the servo motor 81 is fixed to the lower end of the fixed column 4, the rotating rod 82 is fixed to the output end of the servo motor 81, a meshing groove 821 is provided at the lower end of the rotating rod 82, and a ratchet 822 is connected to the lower end of the rotating rod 82 by a torsion spring, the upper end of the rotating rod 83 is rotatably arranged in the meshing groove 821, and a ratchet 831 is fixed in the rotating rod 83, and the ratchet 822 is meshed with the ratchet 831, the Bevel gear one 84 is fixed on rotating rod two 83, the fixed rod 85 is fixed on the inner wall of the inner cylinder 6, the collar 86 is fixed on the end of the fixed rod 85 away from the inner cylinder 6, the rotating shaft 87 is rotatably arranged in the collar 86, the bevel gear two 88 is fixed on one end of the rotating shaft 87, and the bevel gear one 84 is meshed with the bevel gear two 88, the cam 89 is rotatably arranged on the end of the rotating shaft 87 away from the bevel gear two 88, the movable plate 801 is fixed on the irrigation pipe 7, and the movable plate 801 is movably connected with the cam 89, the fixed plate 802 is fixed on the inner wall of the inner cylinder 6, and the fixed plate 802 is located below the movable plate 801, and the spring one 803 is connected between the movable plate 801 and the fixed plate 802.

[0018] It should be explained that the servo motor 81 is controlled synchronously with the external connection valve, that is, when the connection valve is opened, the servo motor 81 is started, and when the connection valve is closed, the servo motor 81 is turned off.

[0019] The collar 86 and the fixing rod 85 are used to support the rotating shaft 87; In addition, the transfer tube 5 can introduce external water into the through hole 41 , and the irrigation tube 7 can drain the introduced water in the through hole 41 .

[0020] For details, please refer to Figure Figures 2 to 4 The servo motor 81 drives the rotating rod 1 82 to rotate, and through the engagement of the pawl 1 822 with the ratchet 1 831, the rotating rod 1 82 can drive the rotating rod 2 83 to rotate, thereby driving the bevel gear 1 84 to rotate. Since the bevel gear 1 84 is engaged with the bevel gear 2 88, the rotating shaft 87 will rotate synchronously with the bevel gear 2 88.

[0021] As a preferred embodiment, a frosted ring 891 is fixed inside the cam 89 , and the frosted ring 891 is in rotational contact with the rotating shaft 87 .

[0022] It should be noted that the friction force between the frosted ring 891 and the rotating shaft 87 is greater than the sum of the elastic forces of the spring 1 803 and the multiple rubber sealing pads 2.

[0023] For details, please refer toFigure 2 , Figure 3 and Figure 5 , in the first driving assembly 8, when the cam 89 pushes the moving disk 801 and the irrigation pipe 7 downward, the frictional force between the grinding ring 891 and the rotating shaft 87 will make the cam 89 and the rotating shaft 87 relatively fixed. Therefore, the cam 89 can rotate synchronously with the rotating shaft 87, so that the irrigation pipe 7 can pass through the lower sides of multiple sector-shaped blocking pieces 3 for water injection irrigation; When the moving disk 801 contacts the fixed disk 802, since the fixed disk 802 completely limits the moving disk 801, the cam 89 cannot continue to rotate. At this time, the rotating shaft 87 will rotate relative to the grinding ring 891. That is to say, when the moving disk 801 contacts the fixed disk 802, the rotating shaft 87 slips within the grinding ring 891. Since there is a continuous frictional force between the rotating shaft 84 and the grinding ring 891 during this process, the cam 89 will always maintain the state of pressing the moving disk 801. Therefore, the irrigation pipe 7 has been irrigating at a fixed position below multiple sector-shaped blocking pieces 3.

[0024] In addition, when the irrigation work is completed, after the servo motor 81 is turned off and the first rotating rod 82 stops rotating under the action of inertia, at this time, the first spring 803 will push the moving disk 801 upward to the initial position, so that the irrigation pipe 7 will move upward synchronously with the moving disk 801 and enter above multiple sector-shaped blocking pieces 3. At this time, multiple sector-shaped blocking pieces 3 will isolate the inside and outside of the outer cylinder 1 again through the elastic reset action of the corresponding rubber gaskets 2, so that the irrigation pipe 7 after irrigation is always in a closed space, thus avoiding the long-term exposure of the end of the irrigation pipe 7 outside, and preventing the end of the irrigation pipe 7 from being blocked by sediment and dust in the air.

[0025] During the above process, when the moving disk 801 drives the cam 89 to reverse, the cam 89 will drive the rotating shaft 87 to reverse synchronously through the frictional force between the grinding ring 891 and the rotating shaft 87, and drive the second rotating rod 83 to reverse through the meshing of the bevel gear set. At this time, the first ratchet wheel 831 will idle relative to the first pawl 822, so that the first rotating rod 82 will not reverse with the second rotating rod 83, and thus will not damage the servo motor 81.

[0026] In the present invention, the second driving assembly 9 includes a third rotating rod 91, a first spur gear 92, a sleeve 93, a second spur gear 94, a rotating block 95, a vertical pipe 96, a guiding pipe 97, a sliding block 98, a sliding rod 99, an inclined rod 901, a sliding ring 902, a cleaning brush 903 and a second spring 904; a second engaging groove 832 is formed at the lower end of the second rotating rod 83, the upper end of the third rotating rod 91 is sleeved and rotatably arranged in the second engaging groove 832, a second pawl 833 is connected to the lower end of the second rotating rod 83 by a second torsion spring, a second ratchet wheel 911 is fixed in the third rotating rod 91, the second pawl 833 meshes with the second ratchet wheel 911, the first spur gear 92 is fixed on the third rotating rod 91, the sleeve 93 is rotatably arranged on the irrigation pipe 7, the second spur gear 94 is fixed on the sleeve 93, and the second spur gear 94 meshes with the first spur gear 92, the rotating block 95 is fixed on the outer wall of the lower end of the sleeve 93, the vertical pipe 96 is fixedly penetrated through the bottom of the inner cylinder 6, and a chute 961 is formed inwardly at the lower end of the vertical pipe 96, a communication hole 962 is formed in the vertical pipe 96 located inside the inner cylinder 6 and on the side close to the sleeve 93, the guiding pipe 97 is fixed on one side of the upper end of the vertical pipe 96, and the guiding pipe 97 communicates with the communication hole 962, the sliding block 98 is hermetically slidably arranged in the guiding pipe 97, the sliding rod 99 is hermetically slidably arranged in the chute 961, the inclined rod 901 is fixed at the lower end of the sliding rod 99, the sliding ring 902 is fixed at the lower end of the inclined rod 901, and the sliding ring 902 is sleeved and slidably arranged on the irrigation pipe 7, the cleaning brush 903 is adhered to the inner wall of the sliding ring 902, and the second spring 904 is connected between the sliding rod 99 and the inner wall of the upper end of the chute 961.

[0027] As a preferred embodiment, the horizontal cross-sections of the rotating block 95 and the sliding block 98 are both triangular.

[0028] As a preferred embodiment, both the upper and lower ends of the sliding ring 902 are configured as frustum-shaped.

[0029] As a preferred embodiment, hydraulic oil 10 is provided in the enclosed space formed between the sliding rod 99 and the sliding block 98.

[0030] Specifically, please refer to Figure 2 、 Figure 4 、 Figures 6 to 8, after the servo motor 81 starts, the pawl two 833 at the lower end of the second rotating rod 83 meshes with the second ratchet wheel 911 in the third rotating rod 91, so that the third rotating rod 91 will rotate synchronously with the second rotating rod 83. The first spur gear 92 on the third rotating rod 91 meshes with the second spur gear 94 on the sleeve 93, so that the third rotating rod 91 will drive the sleeve 93 to rotate, and then drive the rotating block 95 to rotate. During the rotation of the rotating block 95, its inclined surface will squeeze the inclined surface of the slider 98. The horizontal component force of the rotating block 95 on the slider 98 will push the slider 98 to move into the guide pipe 97, so that the hydraulic oil 10 will push the sliding rod 99 downward, and at the same time, the second spring 904 will elongate, and then drive the sliding ring 902 to move downward through the inclined rod 901 and pass through a plurality of sector-shaped sealing sheets 3 to clean the outer wall of the irrigation pipe 7 below the plurality of sector-shaped sealing sheets 3 once. When the rotating block 95 and the slider 98 complete one extrusion, the second spring 904 will shorten, so as to pull the inclined rod 901 and the sliding ring 902 upward to the upper side of the sector-shaped sealing sheet 3. Therefore, when the rotating block 95 and the slider 98 act periodically, the sliding ring 902 can move up and down on the outer wall of the end of the irrigation pipe 7, so that the cleaning brush 903 can wipe and clean the outer wall of the irrigation pipe 7 in the external environment, preventing dust in the air from adhering to the outer wall of the irrigation pipe 7 and forming sediment flowing to the end of the irrigation pipe 7 to cause a blocking phenomenon.

[0031] In addition, when the irrigation work is completed, the servo motor 81 is turned off, and the rotating block 95 will stop rotating. At this time, no matter where the sliding ring 902 and the cleaning brush 903 are located, the second spring 904 will pull the sliding rod 99 to move to the initial position, so as to drive the sliding ring 902 and the cleaning brush 903 to move to the upper side of the plurality of sector-shaped sealing sheets 3 through the inclined rod 901. That is to say, after the pipe wall servo motor 81, the irrigation pipe 7 and the sliding ring 902 will both move up to the upper side of the plurality of sector-shaped sealing sheets 3, so that the plurality of sector-shaped sealing sheets 3 can isolate the inside and outside of the outer cylinder 1.

[0032] During the above process, when the servo motor 81 stops and the first rotating rod 82 stops rotating under the action of inertia, if when the rotating block 95 just pushes the slider 98 to move into the guide pipe 97, at this time, the extrusion force of the rotating block 95 on the slider 98 is less than the elastic force of the second spring 904, the slider 98 will move out of the guide pipe 97, so as to push the rotating block 95 to reverse, drive the sleeve 93 to reverse, and drive the third rotating rod 91 to reverse through the meshing of the spur gear set. At this time, the second ratchet wheel 911 will idle relative to the pawl two 833, so that the third rotating rod 91 will not drive the second rotating rod 83 to reverse. Therefore, when the third rotating rod 91 reverses, it will not interfere with the second rotating rod 83.

[0033] In addition, when the sliding ring 902 moves up and down, the truncated cone shapes at its upper and lower ends can avoid obstruction to the sliding ring 902 by the lower ends of the multiple fan-shaped blocking pieces 3, so that the sliding ring 902 can slide freely through the multiple fan-shaped blocking pieces 3.

[0034] The specific irrigation methods are as follows: S1: Before irrigation, the outer cylinder 1 is installed on the external connection valve through the flange 11. When the rice needs to be irrigated, the external connection valve is opened, and the servo motor 81 is started at the same time, and the external water flows into the through hole 41 through the transfer tube 5, and the introduced water in the through hole 41 is discharged through the irrigation pipe 7; S2: After the servo motor 81 is started, the irrigation pipe 7 is driven by the first driving assembly 8 to move downward and penetrate the multiple sector-shaped blocking pieces 3, so that the multiple sector-shaped blocking pieces 3 that are gathered together are opened. When the lower end of the irrigation pipe 7 moves to a fixed position on the lower side of the multiple sector-shaped blocking pieces 3, it stops moving and irrigation is carried out; S3: When the irrigation pipe 7 is irrigating, the servo motor 81 drives the cleaning brush 903 through the second driving assembly 9 to wipe and clean the outer wall of the lower end of the irrigation pipe 7; S4: After the irrigation is completed, the external connection valve is closed, and the servo motor 81 is turned off at the same time. The irrigation pipe 7 and the cleaning brush 903 will move to the upper side of the multiple fan-shaped blocking pieces 3, so that the multiple fan-shaped blocking pieces 3 return to the state of being gathered together.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A blocking-proof rice planting water-saving irrigation device, characterized in that: The invention comprises an outer cylinder (1), a rubber sealing gasket (2), a fan-shaped plugging piece (3), a fixing column (4), a transfer tube (5), an inner cylinder (6), an irrigation pipe (7), a first drive assembly (8) and a second drive assembly (9); the upper end of the outer cylinder (1) is connected with a flange (11) for sealing and mounting with an external connection valve; the rubber sealing gasket (2) is arc-shaped, a plurality of which are arranged on the circumference and are sealed and fixed on the lower end of the outer cylinder (1); a plurality of fan-shaped plugging pieces (3) are arranged on the circumference and are respectively fixed on the lower ends of a plurality of the rubber sealing gaskets (2); the lower ends of the plurality of fan-shaped plugging pieces (3) are in contact with each other, and two adjacent fan-shaped plugging pieces are arranged on the circumference. (3) are fitted with each other, the fixing column (4) is fixed on the inner wall of the outer cylinder (1), and a through hole (41) is opened in the center of the fixing column (4) in the vertical direction, the upper end of the transfer tube (5) is connected to the flange (11), and the lower end extends into the through hole (41), the inner cylinder (6) is coaxially fixed to the lower end of the fixing column (4), and the inner cylinder (6) is connected to the through hole (41), the upper end of the irrigation pipe (7) is slidably arranged in the through hole (41), and the lower end slides through the bottom of the inner cylinder (6), the first drive assembly (8) is arranged in the inner cylinder (6), and the second drive assembly (9) is arranged below the first drive assembly (8).

2. The anti-blocking type rice planting water-saving irrigation device according to claim 1, characterized in that: The first driving assembly (8) comprises a servo motor (81), a rotating rod (82), a rotating rod (83), a bevel gear (84), a fixed rod (85), a collar (86), a rotating shaft (87), a bevel gear (88), a cam (89), a movable plate (801), a fixed plate (802) and a spring (803); the servo motor (81) is fixed to the lower end of the fixed column (4); the rotating rod (82) is fixed to the output end of the servo motor (81); a meshing groove (821) is provided at the lower end of the rotating rod (82); a ratchet (822) is connected to the lower end of the rotating rod (82) by a torsion spring; the upper end of the rotating rod (83) is rotatably arranged in the meshing groove (821); a ratchet (831) is fixed in the rotating rod (83); the ratchet (822) meshes with the ratchet (831); the bevel gear Wheel 1 (84) is fixed on rotating rod 2 (83), the fixed rod (85) is fixed on the inner wall of the inner cylinder (6), the collar (86) is fixed on the end of the fixed rod (85) away from the inner cylinder (6), the rotating shaft (87) is rotatably arranged in the collar (86), the bevel gear 2 (88) is fixed on one end of the rotating shaft (87), and the bevel gear 1 (84) is meshed with the bevel gear 2 (88), the cam (89) is rotatably arranged on the end of the rotating shaft (87) away from the bevel gear 2 (88), the movable plate (801) is fixed on the irrigation pipe (7), and the movable plate (801) is movably connected to the cam (89), the fixed plate (802) is fixed on the inner wall of the inner cylinder (6), and the fixed plate (802) is located below the movable plate (801), and the spring 1 (803) is connected between the movable plate (801) and the fixed plate (802).

3. The anti-blocking type rice planting water-saving irrigation device according to claim 2, characterized in that: A frosted ring (891) is fixed inside the cam (89), and the frosted ring (891) is in rotational contact with the rotating shaft (87).

4. The anti-blocking type rice planting water-saving irrigation device according to claim 2, characterized in that: The second driving assembly (9) comprises a rotating rod three (91), a spur gear one (92), a sleeve (93), a spur gear two (94), a rotating block (95), a vertical tube (96), a guide tube (97), a sliding block (98), a sliding rod (99), an inclined rod (901), a sliding ring (902), a cleaning brush (903) and a spring two (904); the lower end of the rotating rod two (83) is provided with a meshing groove two (832), and the upper end of the rotating rod three (91) is rotatably arranged in the meshing groove two (832), the lower end of the second rotating rod (83) is connected to the second ratchet (833) by a torsion spring (8), the second ratchet (911) is fixed in the third rotating rod (91), the second ratchet (833) is meshed with the second ratchet (911), the first spur gear (92) is fixed on the third rotating rod (91), the sleeve (93) is rotatably arranged on the irrigation pipe (7), the second spur gear (94) is fixed on the sleeve (93), and the second spur gear (94) is meshed with the first spur gear (92), The rotating block (95) is fixed on the outer wall of the lower end of the sleeve (93); the vertical tube (96) is fixedly passed through the bottom of the inner tube (6); a slide groove (961) is provided inwardly at the lower end of the vertical tube (96); a connecting hole (962) is provided on the vertical tube (96) located in the inner tube (6) and close to the sleeve (93); the guide tube (97) is fixed on one side of the upper end of the vertical tube (96); the guide tube (97) is connected to the connecting hole (962); and the slider (98) is sealingly slidably arranged on the vertical tube (96). In the guide tube (97), the sliding rod (99) is sealingly slidably arranged in the slide groove (961), the inclined rod (901) is fixed to the lower end of the sliding rod (99), the sliding ring (902) is fixed to the lower end of the inclined rod (901), and the sliding ring (902) is slidably arranged on the irrigation pipe (7), the cleaning brush (903) is bonded to the inner wall of the sliding ring (902), and the second spring (904) is connected between the sliding rod (99) and the inner wall of the upper end of the slide groove (961).

5. The anti-blocking type rice planting water-saving irrigation device according to claim 4, characterized in that: The horizontal cross-sections of the rotating block (95) and the sliding block (98) are both arranged in a triangular shape.

6. The anti-blocking type rice planting water-saving irrigation device according to claim 4, characterized in that: The upper and lower ends of the sliding ring (902) are configured in a truncated cone shape.

7. The anti-blocking type rice planting water-saving irrigation device according to claim 4, characterized in that: Hydraulic oil (10) is provided in the closed space formed between the sliding rod (99) and the sliding block (98).

8. A blocking-proof rice planting water-saving irrigation method is as follows: S1: Before irrigation, the outer cylinder (1) is mounted on the external connection valve via the flange (11). When the rice needs to be irrigated, the external connection valve is opened and the servo motor (81) is started. External water flows into the through hole (41) via the transfer tube (5), and the introduced water in the through hole (41) is discharged via the irrigation pipe (7); S2: After the servo motor (81) is started, the irrigation pipe (7) is driven to move downward through the first drive assembly (8) and penetrate the plurality of fan-shaped blocking pieces (3), so that the plurality of fan-shaped blocking pieces (3) that are gathered together are opened, and when the lower end of the irrigation pipe (7) moves to a fixed position below the plurality of fan-shaped blocking pieces (3), the irrigation pipe (7) stops moving and irrigation is carried out; S3: When the irrigation pipe (7) is irrigating, the servo motor (81) drives the cleaning brush (903) via the second drive assembly (9) to wipe the outer wall of the lower end of the irrigation pipe (7) up and down to clean it; S4: After the irrigation is completed, the external connection valve is closed and the servo motor (81) is turned off. The irrigation pipe (7) and the cleaning brush (903) are moved to the upper side of the plurality of fan-shaped blocking pieces (3), so that the plurality of fan-shaped blocking pieces (3) are restored to a mutually gathered state.

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