Water delivery device for irrigation

Abstract

The application relates to the technical field of irrigation devices, in particular to a water conveying device for farmland water conservancy irrigation. In view of the problem that the existing device leaves a hole after being retracted underground, and the soil around the hole falls into the hole and affects the normal work of the existing device, the water conveying device comprises a protection shell, a fixed pipe arranged in the protection shell, a sliding pipe slidingly connected with the fixed pipe, a first spring arranged between the sliding pipe and the fixed pipe, an adjusting shell communicated with the upper side of the sliding pipe, the adjusting shell being rotationally connected with the sliding pipe, a nozzle communicated with the upper side of the adjusting shell, and a protection cover rotationally connected with the upper side of the protection shell. The protection cover is opened during irrigation, the sliding pipe is extended out of the fixed pipe, the sliding pipe is retracted into the fixed pipe when irrigation is stopped, and the protection cover is closed, so that the nozzle is protected, the sliding pipe can be extended out during next irrigation, and the normal use of the device is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of irrigation devices, in particular to a water conveying device for farmland water conservancy irrigation. BACKGROUND

[0002] The water conveying device for farmland water conservancy irrigation is a key equipment to ensure the effective delivery of water resources to farmland, and plays an important role in improving agricultural productivity and saving water. According to different irrigation systems and technical requirements, these water conveying devices can be divided into various types, each of which has its specific application scenario and advantage. The water conveying mode includes channel water conveying, pipeline water conveying, drip irrigation system, sprinkler irrigation system, micro-sprinkler irrigation system and underground irrigation. The sprinkler irrigation system is suitable for large-scale farmland irrigation by installing spray heads at fixed positions and automatically spraying according to the preset mode.

[0003] However, the existing sprinkler irrigation system has the water pipe and the spray head protruding out of the ground during irrigation, and the water pipe and the spray head retracting underground after irrigation. After the water pipe and the spray head retract, holes are left on the ground, and the soil around the holes enters the holes due to biological activities and plowing, etc. At this time, the water pipe and the spray head will be blocked when they protrude out of the ground again, and the resistance will be too large to cause the water pipe and the spray head to be unable to protrude out, affecting the normal irrigation of the sprinkler irrigation system. SUMMARY

[0004] In order to overcome the shortcomings mentioned in the background art, the present application provides a water conveying device for farmland water conservancy irrigation.

[0005] The technical scheme is: a water conveying device for farmland water conservancy irrigation, comprising:

[0006] a protective shell;

[0007] a fixed pipe arranged in the protective shell, a sliding pipe slidingly connected to the fixed pipe, and a first spring arranged between the sliding pipe and the fixed pipe;

[0008] an adjusting shell connected to the upper side of the sliding pipe, the adjusting shell being rotatably connected to the sliding pipe, and the upper side of the adjusting shell being connected to a spray head;

[0009] a protective cover rotatably connected to the upper side of the protective shell.

[0010] Further, it further comprises:

[0011] a first shell hinged in the protective shell, the first shell being connected to the fixed pipe;

[0012] a first sliding rod hinged to the lower side of the protective cover, the first sliding rod being slidingly connected to the first shell and having a first tension spring arranged therebetween.

[0013] Further, it further comprises:

[0014] A first limiting post is slidably connected to the sliding pipe, a second spring is arranged between the first limiting post and the sliding pipe, the fixed pipe is provided with a first limiting slot, and the first limiting post is used for limiting the sliding pipe;

[0015] A baffle is fixedly connected in the fixed pipe, and the baffle is used for plugging the sliding pipe.

[0016] Further, further comprising:

[0017] A plurality of rotating plates are hingedly connected to the protective cover;

[0018] A plurality of second housings are hingedly connected to the protective cover, and the plurality of second housings are in communication with the fixed pipe;

[0019] A plurality of second sliding rods are respectively hingedly connected to adjacent rotating plates, and the second sliding rods are slidably connected to adjacent second housings and are provided with second tension springs therebetween.

[0020] Further, further comprising:

[0021] A plurality of soil retaining members are arranged between adjacent rotating plates, and the soil retaining members are made of flexible materials.

[0022] Further, further comprising:

[0023] A second limiting post is slidably connected to the first sliding rod, a third spring is arranged between the second limiting post and the first sliding rod, the first housing is provided with a second limiting slot, and the second limiting post is used for limiting the first sliding rod.

[0024] Further, further comprising:

[0025] An adjusting plate is slidably connected to the adjusting housing, and a third tension spring is arranged between the adjusting plate and the adjusting housing;

[0026] An adjusting rod is slidably connected to the adjusting housing, and the adjusting rod is fixedly connected to the adjusting plate.

[0027] Further, further comprising:

[0028] An installation rod is fixedly connected to the sliding pipe;

[0029] An adjusting ring is slidably connected to the installation rod, and the adjusting ring is used for extruding the adjusting rod.

[0030] Further, further comprising:

[0031] The rotating piece is fixedly connected with the mounting piece of the sliding pipe, the rotating piece is spline-connected with the sliding rod, the fourth spring is arranged between the sliding rod and the rotating piece, and the sliding rod is fixedly connected with the adjusting ring;

[0032] The centrifugal column is slidably connected to the rotating piece, and the thin rope is arranged between the centrifugal column and the sliding rod.

[0033] The blade is fixedly connected to the rotating piece.

[0034] Further, the application further comprises:

[0035] The wind direction plate is fixedly connected to the sliding pipe, and the wind direction plate and the rotating piece are located on two sides of the sliding pipe, respectively.

[0036] Beneficial effects: the protective cover is opened during irrigation, the sliding pipe is extended out of the fixed pipe, the protective cover is closed when irrigation is stopped, the sprinkler is protected, the sliding pipe cannot be extended out during next irrigation, and normal use of the device is ensured.

[0037] The soil on the upper side of the rotating plate is turned to the upper side of the protective cover by rotating the rotating plate before the protective cover is opened, so that the soil on the edge is prevented from sliding into the protective shell when the protective cover is opened.

[0038] The rotating piece is rotated by the wind flow driving the blade, the position of the adjusting ring is adjusted, the position of the adjusting plate is adjusted according to the wind speed of the direction when the sprinkler faces different directions, and the influence of the wind flow on irrigation of the device is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 It is a schematic view of the three-dimensional structure of the application;

[0040] Figure 2 It is a sectional view of the three-dimensional structure of the protective shell and the protective cover of the application;

[0041] Figure 3 It is a schematic view of the three-dimensional structure of the adjusting shell and the sprinkler of the application;

[0042] Figure 4 It is a sectional view of the three-dimensional structure of the fixed pipe and the sliding pipe of the application;

[0043] Figure 5 It is a sectional view of the three-dimensional structure of the rotating plate and the second shell of the application;

[0044] Figure 6 It is a sectional view of the three-dimensional structure of the first shell and the first sliding rod of the application;

[0045] Figure 7 The schematic diagram of the three-dimensional structure of the sliding rod and the centrifugal column of the present application.

[0046] The figure number: 1-protective shell, 2-fixed tube, 3-sliding tube, 4-adjusting shell, 5-sprinkler, 6-protective cover, 7-first shell, 8-first sliding rod, 9-first limiting column, 91-baffle, 10-rotating plate, 11-second shell, 12-second sliding rod, 13-earth retaining piece, 14-second limiting column, 15-adjusting plate, 16-adjusting rod, 17-mounting rod, 18-adjusting ring, 19-rotating piece, 20-sliding rod, 21-centrifugal column, 22-vane, 23-wind direction plate. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0048] A water delivery device for farmland water conservancy irrigation, as shown in Figures 1-4 , comprises: a protective shell 1; a fixed tube 2 arranged in the protective shell 1, the fixed tube 2 being slidingly connected with a sliding tube 3, and a first spring being arranged between the sliding tube 3 and the fixed tube 2; an adjusting shell 4 being communicated with the upper side of the sliding tube 3, the adjusting shell 4 being rotatably connected with the sliding tube 3, and the upper side of the adjusting shell 4 being communicated with a sprinkler 5; and a protective cover 6 being rotatably connected with the upper side of the protective shell 1.

[0049] Further, as shown in Figure 2 and Figure 3 , the device further comprises: a first shell 7 being hinged in the protective shell 1 and communicated with the fixed tube 2; and a first sliding rod 8 being hinged at the lower side of the protective cover 6, the first sliding rod 8 being slidingly connected with the first shell 7 and having a first tension spring arranged therebetween.

[0050] In the above scheme, the sprinkler 5 is protected, and the protective cover 6 is automatically opened when the sprinkler 5 protrudes out of the ground. The protective shell 1 is buried in the soil, and the protective cover 6 is flush with the ground when the protective cover 6 is closed. The fixed tube 2 is communicated with a water supply device, which is an existing device and will not be described in detail here. The first spring between the sliding tube 3 and the fixed tube 2 is used to reset the sliding tube 3. During irrigation, the sliding tube 3 moves upward under the action of water pressure and compresses the first spring between the sliding tube 3 and the fixed tube 2. The sprinkler 5 is an existing device, which slowly rotates while spraying water. The first tension spring between the first sliding rod 8 and the first shell 7 is used to drive the protective cover 6 to reset at the end of irrigation.

[0051] Further, as shown in Figure 4 , further comprising: a first limiting column 9, slidingly connected to the sliding pipe 3, a second spring being arranged between the first limiting column 9 and the sliding pipe 3, the fixed pipe 2 being provided with a first limiting groove, the first limiting column 9 being used for limiting the sliding pipe 3; a baffle 91, fixedly connected to the fixed pipe 2, the baffle 91 being used for plugging the sliding pipe 3.

[0052] In the above scheme, the protective cover 6 is opened first, and then the sliding pipe 3 is extended. The second spring between the first limiting column 9 and the sliding pipe 3 is initially in a compressed state, so that the sliding pipe 3 can overcome the resistance of the first limiting column 9 and move after being subjected to a certain pushing force. The baffle 91 is used to make the water in the fixed pipe 2 enter the first shell 7 first and then enter the sliding pipe 3.

[0053] Further, as shown in Figure 2 , Figure 3 and Figure 5 , further comprising: a rotating plate 10, having a plurality of rotating plates 10, each being hingedly connected to the protective cover 6; a second shell 11, having a plurality of second shells 11, each being hingedly connected to the protective cover 6, and each of the plurality of second shells 11 being in communication with the fixed pipe 2; a second sliding rod 12, having a plurality of second sliding rods 12, each being hingedly connected to an adjacent rotating plate 10, and the second sliding rod 12 being slidingly connected to an adjacent second shell 11 and having a second tension spring arranged therebetween.

[0054] Further, as shown in Figure 1 , further comprising: an earth retaining member 13, having a plurality of earth retaining members 13, the earth retaining member 13 being arranged between two adjacent rotating plates 10, and the earth retaining member 13 being made of a flexible material.

[0055] In the above scheme, the protective cover 6 is opened first, and then the sliding pipe 3 is extended. The second spring between the first limiting column 9 and the sliding pipe 3 is initially in a compressed state, so that the sliding pipe 3 can overcome the resistance of the first limiting column 9 and move after being subjected to a certain pushing force. The baffle 91 is used to make the water in the fixed pipe 2 enter the first shell 7 first and then enter the sliding pipe 3.

[0056] Further, as shown in Figure 6Further, the second limiting column 14 is slidingly connected to the first sliding rod 8, and a third spring is arranged between the second limiting column 14 and the first sliding rod 8, and the first shell 7 is provided with a second limiting slot, and the second limiting column 14 is used for limiting the first sliding rod 8.

[0057] In the above scheme, the rotating plate 10 is flipped and then the protective cover 6 is opened. The third spring between the second limiting column 14 and the first sliding rod 8 is initially in a compressed state, but the resistance of the second limiting column 14 to the first sliding rod 8 is smaller than the resistance of the first limiting column 9 to the sliding pipe 3, so that the rotating plate 10, the protective cover 6 and the sliding pipe 3 move in sequence.

[0058] Work flow: When using the device, a plurality of devices are buried in farmland as needed, and then the fixed pipe 2 is connected with the water supply device. When irrigation is needed, the water supply device is supplied with water, the water flows into the fixed pipe 2, and then into the first shell 7 and the second shell 11. At this time, the sliding pipe 3 and the first shell 7 are limited and temporarily do not move. The water flows into the second shell 11 and pushes the second sliding rod 12 to move and stretch the second tension spring adjacent to it. The second sliding rod 12 moves and pushes the rotating plate 10 to rotate, so that the second sliding rod 12 rotates, and the soil on the rotating plate 10 and the soil retaining member 13 slides to the upper side of the protective cover 6, thereby preventing the soil at the edge of the protective cover 6 from falling into the protective shell 1 when the protective cover 6 is opened. When the second sliding rod 12 moves to the maximum distance, the liquid pressure in the first shell 7 rises, pushing the first sliding rod 8 to move against the resistance of the second limiting column 14 and stretching the first tension spring adjacent to it. The first sliding rod 8 pushes the second limiting column 14 to move and compress the third spring adjacent to it. The first sliding rod 8 pushes the protective cover 6 to open and then stops moving. The water pressure in the fixed pipe 2 continues to rise and pushes the sliding pipe 3 to move. The sliding pipe 3 moves upward and separates from the baffle 91, so that the fixed pipe 2 is connected with the sliding pipe 3. The sliding pipe 3 compresses the first spring adjacent to it when moving, and drives the first limiting column 9 to move. The first limiting column 9 is extruded by the fixed pipe 2 to move and compress the second spring adjacent to it. After the fixed pipe 2 is connected with the sliding pipe 3, the water flows into the sliding pipe 3 and is sprayed from the nozzle 5 through the adjusting shell 4. At this time, although water has flowed out from the nozzle 5, the fixed pipe 2 still has high water pressure (just like a tap water system). At this time, the water pressure in the fixed pipe 2 continues to push the sliding pipe 3 to move, so that the sliding pipe 3 is completely stretched out. Then the farmland can be irrigated. When irrigation is finished, the water supply device is closed. The sliding pipe 3 is first reset under the action of the first spring adjacent to it, then the first sliding rod 8 drives the protective cover 6 to reset under the action of the first tension spring adjacent to it, and finally the second sliding rod 12 drives the rotating plate 10 to reset under the action of the second tension spring adjacent to it.

[0059] Further, as shown in FIG. 6, the first limiting column 9 is provided with a first limiting slot 10, and the second limiting column 14 is provided with a second limiting slot 15. Figure 4As shown, further comprising: an adjusting plate 15, slidingly connected to the adjusting shell 4, a third tension spring being arranged between the adjusting plate 15 and the adjusting shell 4; an adjusting rod 16, slidingly connected to the adjusting shell 4, the adjusting rod 16 being fixedly connected to the adjusting plate 15.

[0060] In the above scheme, the water spraying force of the nozzle 5 is adjusted. The third tension spring between the adjusting plate 15 and the adjusting shell 4 is in tension state, so that the adjusting rod 16 and the adjusting ring 18 are kept in close contact.

[0061] Further, as shown in Figure 3 and Figure 4 Further comprising: a mounting rod 17, fixedly connected to the sliding pipe 3; an adjusting ring 18, slidingly connected to the mounting rod 17, the adjusting ring 18 being used to press the adjusting rod 16.

[0062] In the above scheme, the position of the adjusting plate 15 is adjusted. The adjusting plate 15 initially blocks half of the flow area of the adjusting shell 4, at this time, it is the normal water spraying state of the device in the absence of wind, the adjusting rod 16 can be provided with a roller, so as to reduce the resistance when the adjusting rod 16 and the adjusting ring 18 slide relative to each other.

[0063] Further, as shown in Figure 3 , Figure 4 and Figure 7 Further comprising: a rotating member 19, the sliding pipe 3 is fixedly connected with a mounting member, the rotating member 19 is rotatably connected to the mounting member of the sliding pipe 3, the rotating member 19 is spline-connected with a sliding rod 20, a fourth spring is arranged between the sliding rod 20 and the rotating member 19, the sliding rod 20 is fixedly connected to the adjusting ring 18; a plurality of centrifugal columns 21, each slidingly connected to the rotating member 19, a string is arranged between each of the plurality of centrifugal columns 21 and the sliding rod 20, the string passes through the rotating member 19; a plurality of blades 22, each fixedly connected to the rotating member 19.

[0064] In the above scheme, the position of the adjusting ring 18 is adjusted according to the wind speed. The rotating member 19 is composed of a large-diameter circular shell and a plurality of small-diameter circular shells, the plurality of small-diameter circular shells are uniformly distributed in the circumferential direction, when the rotating member 19 rotates, the centrifugal columns 21 are thrown out by centrifugal force, and the sliding rod 20 is pulled to move through the string adjacent to the centrifugal column 21, so as to change the position of the adjusting ring 18.

[0065] Further, as shown in Figure 3 Further comprising: a wind direction plate 23, fixedly connected to the sliding pipe 3, the wind direction plate 23 and the rotating member 19 are located on two sides of the sliding pipe 3 respectively.

[0066] In the above scheme, the rotating member 19 is directed to the wind flow direction. In order to Figure 3For example, when there is wind blowing from front to back, the wind direction plate 23 receives a greater wind thrust than the mounting member on the sliding tube 3, the adjusting ring 18, the rotating member 19 and the sliding rod 20, so that the wind direction plate 23 can drive the sliding tube 3 to rotate when the wind flows.

[0067] Workflow: when irrigating, the spray head 5 drives the adjusting shell 4 to rotate, the adjusting shell 4 drives the adjusting rod 16 to rotate, when there is wind, the wind flow drives the blade 22 to rotate, the blade 22 drives the rotating member 19 to rotate, when the rotating member 19 rotates, the centrifugal column 21 is thrown out by centrifugal force, and moves the sliding rod 20 through the thin rope adjacent to it, the sliding rod 20 drives the adjusting ring 18 to move, so that the adjusting shell 4 is gradually opened, and the spray head 5 is gradually opened, so that the water flow from the spray head 5 is gradually increased. Figure 4 For example, the adjusting ring 18 moves to the right, at this time the adjusting plate 15 drives the adjusting rod 16 to move to the right under the action of the third tension spring adjacent to it, so that the opening area of the adjusting shell 4 is larger, so as to enhance the power of the water flow from the spray head 5 (just like in the tap system, the water flow is strong when the tap is opened, and the water flow is weak when the tap is opened), so as to overcome the resistance of the wind flow, during the process of the adjusting shell 4 driving the adjusting rod 16 to rotate 180°, the area of the adjusting plate 15 shielding the adjusting shell 4 gradually increases, so that the power of the water flow from the spray head 5 gradually decreases from the maximum, and after the adjusting rod 16 rotates 180°, the power of the water flow is reduced to the minimum, at this time the water flow can move a farther distance under the push of the wind flow, so as to reduce the influence of the wind flow on the irrigation position of the device when irrigating the farmland.

[0068] It should be noted that each embodiment in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same and similar parts of each embodiment can be referred to each other.

Claims

1. A water conveying device for farmland irrigation, characterized in that, The utility model relates to a kind of protective shell, including: Protective shell (1); Fixed pipe (2) is arranged in the protective shell (1), the fixed pipe (2) is slidably connected with sliding pipe (3), and first spring is arranged between the sliding pipe (3) and the fixed pipe (2); Adjusting shell (4) is communicated with the upper side of the sliding pipe (3), the adjusting shell (4) is rotatably connected with the sliding pipe (3), and the upper side of the adjusting shell (4) is communicated with spray head (5); Protective cover (6) is rotatably connected with the upper side of the protective shell (1); Further including: First shell (7) is hinged in the protective shell (1), and the first shell (7) is communicated with the fixed pipe (2); First sliding rod (8) is hinged in the lower side of the protective cover (6), and the first sliding rod (8) is slidably connected with the first shell (7) and is provided with first tension spring between the first sliding rod (8) and the first shell (7); Further including: First limiting column (9) is slidably connected with the sliding pipe (3), and second spring is arranged between the first limiting column (9) and the sliding pipe (3), the fixed pipe (2) is provided with first limiting slot, and the first limiting column (9) is used for limiting the sliding pipe (3); Baffle (91) is fixedly connected in the fixed pipe (2), and the baffle (91) is used for blocking the sliding pipe (3); Further including: Rotating plate (10) has several, and is hinged in the protective cover (6); Second shell (11) has several, and is hinged in the protective cover (6), and several second shell (11) are communicated with the fixed pipe (2); Second sliding rod (12) has several, and is hinged in adjacent rotating plate (10) respectively, and the second sliding rod (12) is slidably connected with adjacent second shell (11) and is provided with second tension spring between the second sliding rod (12) and the second shell (11); Further including: Soil retaining member (13) has several, and the soil retaining member (13) is arranged between adjacent rotating plate (10), and the soil retaining member (13) is flexible material; Further including: Second limiting column (14) is slidably connected with the first sliding rod (8), and third spring is arranged between the second limiting column (14) and the first sliding rod (8), the first shell (7) is provided with second limiting slot, and the second limiting column (14) is used for limiting the first sliding rod (8); A plurality of the device is buried in the farmland as needed, and then the fixed pipe (2) is communicated with the water supply device. When irrigation is needed, the water supply device is supplied with water, the water flows into the fixed pipe (2), and then into the first shell (7) and the second shell (11). At this time, the sliding pipe (3) and the first shell (7) are both limited, so they are temporarily not moved. The water flows into the second shell (11) and pushes the second slide rod (12) to move and stretch the second tension spring adjacent to it. The second slide rod (12) moves and pushes the rotating plate (10) to rotate, so that the second slide rod (12) rotates, thereby making the rotating plate (10) and the soil on the soil retaining member (13) slide to the upper side of the protective cover (6), thereby preventing the soil on the edge from falling into the protective shell (1) when the protective cover (6) is opened. When the second slide rod (12) moves to the maximum distance, the liquid pressure in the first shell (7) rises, pushing the first slide rod (8) to move and stretch the first tension spring adjacent to it against the resistance of the second limiting column (14). The first slide rod (8) extrudes the second limiting column (14), causing the second limiting column (14) to move and compress the third spring adjacent to it. The first slide rod (8) pushes the protective cover (6) to open and then stops moving. The water pressure in the fixed pipe (2) continues to rise and pushes the sliding pipe (3) to move. The sliding pipe (3) moves upward and separates from the baffle (91), allowing the fixed pipe (2) to communicate with the sliding pipe (3). The sliding pipe (3) compresses the first spring adjacent to it when it moves, and the first limiting column (9) moves. The first limiting column (9) is extruded by the fixed pipe (2) to move and compress the second spring adjacent to it. After the fixed pipe (2) and the sliding pipe (3) are connected, the water flows into the sliding pipe (3) and is sprayed from the nozzle (5) through the adjusting shell (4). At this time, although water has flowed out from the nozzle (5), the water pressure in the fixed pipe (2) continues to push the sliding pipe (3) to move, allowing the sliding pipe (3) to fully extend. After that, the farmland can be irrigated. When irrigation is complete, the water supply device is turned off. The sliding pipe (3) is reset first under the action of the first spring adjacent to it, then the first slide rod (8) resets the protective cover (6) under the action of the first tension spring adjacent to it, and finally the second slide rod (12) resets the rotating plate (10) under the action of the second tension spring adjacent to it.

2. The water delivery device for irrigation of farmlands according to claim 1, characterized in that, Also includes: An adjusting plate (15) is slidably connected to the adjusting shell (4). A third tension spring is provided between the adjusting plate (15) and the adjusting shell (4). An adjusting rod (16) is slidably connected to the adjusting shell (4), and the adjusting rod (16) is fixedly connected to the adjusting plate (15).

3. The water delivery device for irrigation of farmlands according to claim 2, wherein Also includes: A mounting rod (17) is fixedly connected to the sliding pipe (3). An adjusting ring (18) is slidably connected to the mounting rod (17), and the adjusting ring (18) is used to extrude the adjusting rod (16).

4. The water delivery device for irrigation according to claim 3, wherein Also includes: Rotary piece (19), the sliding pipe (3) is fixed with the mounting piece, the rotary piece (19) is rotatably connected to the mounting piece of the sliding pipe (3), the rotary piece (19) is spline connected with the sliding rod (20), the fourth spring is arranged between the sliding rod (20) and the rotary piece (19), the sliding rod (20) is fixed with the adjusting ring (18); Centrifugal column (21) has several, all slidingly connected to the rotary piece (19), several the centrifugal column (21) with the sliding rod (20) between all are provided with the thin rope, thin rope passes through the rotary piece (19); Blade (22) has several, all fixed to the rotary piece (19).

5. The water delivery device for agricultural irrigation according to claim 4, wherein Also includes: Wind direction board (23) is fixed to the sliding pipe (3), the wind direction board (23) and the rotary piece (19) are located on both sides of the sliding pipe (3) respectively.

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