Efficient sprinkling irrigation water guide structure of tomato seedling growing multi-span greenhouse

Abstract

The invention relates to the technical field of sprinkling irrigation, in particular to an efficient sprinkling irrigation water guide structure of a tomato seedling growing multi-span greenhouse, which comprises a main pipeline and a branch pipeline, the branch pipeline is fixedly mounted on one side of the main pipeline, a feeding pipe is fixedly mounted above the main pipeline, a feeding hole is formed above the feeding pipe, and a discharging hole is formed below the feeding hole. A mixing device is arranged in the feeding pipe, connecting pipes are fixedly installed on the two sides of the branch pipeline, water spraying pipes are rotatably installed above the connecting pipes through elastic pieces, and swing mechanisms are arranged between the water spraying pipes and the connecting pipes. According to the efficient sprinkling irrigation water guide structure for the tomato seedling growing multi-span greenhouse, by arranging the rotating piece, under the cooperation of a first magnet, a second magnet and a limiting block, a water spraying pipe can rotate by 180 degrees at the roots of tomatoes when spraying water, water accumulation can be avoided, meanwhile, water can be prevented from being sprayed to the position above a branch water pipe, and the water spraying efficiency is improved. And full utilization of water resources is realized.

Description

Technical Field

[0001] The invention relates to the technical field of sprinkler irrigation, in particular to a high-efficiency sprinkler irrigation water guide structure for a tomato seedling multi-span greenhouse. Background Art

[0002] The tomato sprinkler water guide structure is the core component for achieving efficient irrigation in modern greenhouses. Its design and technical characteristics directly affect the growth efficiency of crops and resource utilization. Sprinkler irrigation in the greenhouse is to water the cultivated agricultural products. By planting crops that are not suitable for the current season or region in the greenhouse, it can provide a greenhouse growth period and increase yields. However, because the greenhouse is completely closed, the agricultural products grown in the greenhouse need to be irrigated.

[0003] Existing sprinkler water-guiding structures generally spray water directly onto the surface of cultivated crops through pipes. When spraying tomatoes, it is necessary to avoid the leaves of the tomatoes and spray the water onto the roots of the tomatoes to avoid the problem of water accumulation. Moreover, when fertilizing the tomatoes, it is necessary to mix the fertilizer and water together in advance before spraying, which affects the efficiency of tomato sprinkler irrigation. Summary of the Invention

[0004] The object of the present invention is to provide a high-efficiency sprinkler irrigation water guide structure for a multi-span greenhouse for raising tomato seedlings, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a high-efficiency sprinkler irrigation water guide structure for a multi-span greenhouse for raising tomato seedlings, comprising a main pipe and a branch pipe, wherein the branch pipe is fixedly installed on one side of the main pipe, a feeding pipe is fixedly installed above the main pipe, a feeding port is opened above the feeding pipe, a mixing device is provided inside the feeding pipe, connecting pipes are fixedly installed on both sides of the branch pipe, a water spray pipe is rotatably installed above the connecting pipe through an elastic member, and a swinging mechanism is provided between the water spray pipe and the connecting pipe.

[0006] Preferably, the mixing device includes a rotatable shaft, which is rotatably mounted inside the feeding tube. The shaft is horizontally arranged, and fan blades are fixedly mounted on the outer surface of the shaft, and a crushing mechanism is arranged above the fan blades.

[0007] Preferably, the rolling mechanism includes a filter screen, which is installed inside the feeding pipe through a sliding structure. A fixed block is fixedly installed below the filter screen, and the fixed block is in contact with the fan blades. Two groups of rolling parts are arranged above the filter screen, and the rolling parts are connected to the feeding pipe through a moving assembly. A protrusion is fixedly installed on the outer surface of the rolling parts.

[0008] Preferably, the sliding structure includes a slide groove, which is opened on the inner wall of the feeding pipe, and a slide rod is fixedly installed inside the slide groove. The sliding sleeve on the outer surface of the slide rod is provided with a slider, and the slider is fixedly connected to the filter screen. The movable sleeve on the outer surface of the slide rod is provided with a No. 1 spring, and the No. 1 spring is fixedly connected to the slider.

[0009] Preferably, the moving assembly includes support blocks, which are rotatably mounted on both sides of the rolling piece, an elastic structure is provided between two adjacent groups of support blocks, a plate is rotatably mounted above the support block, and the plate is rotatably connected to one end away from the support block and the center of the feeding pipe.

[0010] Preferably, the elastic structure includes a rod and a No. 2 spring, the rod slides through two groups of support blocks, the rod is horizontally arranged, the No. 2 spring is movably sleeved on the outer surface of the rod, and the No. 2 spring is arranged between the two groups of support blocks.

[0011] Preferably, a blanking piece is provided above the rolling piece, and the blanking piece is connected to one group of support blocks via a rotating structure. A trough body is provided inside the blanking piece, and a counterweight plate is slidably installed inside the trough body.

[0012] Preferably, guide blocks are fixedly installed on both sides of the counterweight plate, a guide groove is opened inside the blanking piece, the guide groove is communicated with the groove body, and the guide groove and the guide block are slidably connected.

[0013] Preferably, the rotating structure includes a shaft, which is fixedly mounted on both ends of the unloading member, and the shaft is rotatably connected to the feeding tube. A gear is fixedly sleeved on the outer surface of the shaft, and a rack is slidably mounted inside the feeding tube. The rack and the gear are meshed, and a telescopic rod is fixedly mounted below the rack, and the end of the telescopic rod away from the rack is fixedly connected to one of the groups of support blocks.

[0014] Preferably, the swing mechanism includes a rotating part, which is rotatably installed inside the connecting pipe, and a blade and a No. 1 magnet are fixedly installed on the outer surface of the rotating part, and the No. 1 magnet is located above the blade. The No. 2 magnet is fixedly installed on the inner wall of the water spray pipe, and the No. 1 magnet and the No. 2 magnet attract each other. A limit block is fixedly installed on the inner wall of the connecting pipe, and the limit block is in contact with the No. 2 magnet.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. By setting a rotating part, with the cooperation of magnet No. 1, magnet No. 2 and limit block, the water spray pipe can rotate 180 degrees at the root of the tomato when spraying water, which can avoid water accumulation and prevent water from being sprayed above the branch pipe, thereby fully utilizing water resources.

[0017] 2. By setting up the main pipeline, with the cooperation of the feeding pipe, fertilizer can be added directly to the water. There is no need to dilute the fertilizer with water in advance, which is conducive to improving the efficiency of tomato sprinkler irrigation.

[0018] 3. By setting up a filter and cooperating with the rolling parts, the fertilizer can be rolled so that the fertilizer can fully contact with water, which is conducive to accelerating the fusion of fertilizer and water, ensuring the effect of tomato sprinkler irrigation, and further improving the efficiency of tomato sprinkler irrigation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a cross-sectional view of the structure of the present invention;

[0021] Figure 3 This is a cross-sectional view of the internal structure of the main pipeline of the present invention;

[0022] Figure 4 This is a cross-sectional view of the internal structure of the feeding tube of the present invention;

[0023] Figure 5 For the present invention Figure 4 A magnified view of point A;

[0024] Figure 6 It is a partial structural cross-sectional view of the present invention;

[0025] Figure 7 For the present invention Figure 6 Enlarged view of point B;

[0026] Figure 8 It is a partial structural cross-sectional view of the present invention.

[0027] In the accompanying drawings, the list of components represented by each number is as follows: 1. Main pipeline; 2. Feeding pipe; 3. Rotating shaft; 4. Fan blade; 5. Filter screen; 6. Fixed block; 7. Slide groove; 8. Slider; 9. Slide rod; 10. Spring No. 1; 11. Rolling part; 12. Bump; 13. Support block; 14. Rod; 15. Spring No. 2; 16. Plate; 17. Feed port; 18. Discharging part; 19. Trough body; 20. Counterweight plate; 21. Guide groove; 22. Guide block; 23. Shaft; 24. Gear; 25. Rack; 26. Telescopic rod; 27. Branch pipeline; 28. Water spray pipe; 29. Connecting pipe; 30. Rotating part; 31. Blade; 32. Magnet No. 1; 33. Magnet No. 2; 34. Limit block; 35. Elastic part. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figures 1-8 The figure shows an efficient sprinkler irrigation water guide structure for a multi-span greenhouse for raising tomato seedlings, comprising a main pipe 1 and a branch pipe 27. The branch pipe 27 is fixedly installed on one side of the main pipe 1. A feeding pipe 2 is fixedly installed above the main pipe 1. A feeding port 17 is provided above the feeding pipe 2. A mixing device is provided inside the feeding pipe 2. Connecting pipes 29 are fixedly installed on both sides of the branch pipe 27. A water spray pipe 28 is rotatably installed above the connecting pipe 29 through an elastic member 35. A swinging mechanism is provided between the water spray pipe 28 and the connecting pipe 29.

[0030] Specifically, fertilizer is added to the inside of the feeding pipe 2 through the feeding port 17, and water flows inside the main pipe 1. When the water flows through the feeding pipe 2, the water and the fertilizer inside the feeding pipe 2 are mixed, and the mixed water flows from the main pipe 1 to the inside of the branch pipe 27, and enters the inside of the water spray pipe 28 through the connecting pipe 29, so that the swing mechanism drives the water spray pipe 28 to swing, so that the mixed water can be sprayed on the ground at the roots of the tomatoes, which is beneficial to improving the efficiency of sprinkler irrigation and can avoid the problem of water accumulation.

[0031] The mixing device includes a rotatable shaft 3, which is rotatably mounted inside the feeding pipe 2. The shaft 3 is horizontally arranged, and a fan blade 4 is fixedly mounted on the outer surface of the shaft 3. A rolling mechanism is arranged above the fan blade 4.

[0032] The rolling mechanism includes a filter screen 5, which is installed inside the feeding pipe 2 through a sliding structure. A fixed block 6 is fixedly installed below the filter screen 5, and the fixed block 6 is in contact with the fan blade 4. Two groups of rolling parts 11 are arranged above the filter screen 5. The rolling parts 11 are connected to the feeding pipe 2 through a moving assembly, and a protrusion 12 is fixedly installed on the outer surface of the rolling parts 11.

[0033] The sliding structure includes a slide groove 7, which is opened on the inner wall of the feeding pipe 2. A slide rod 9 is fixedly installed inside the slide groove 7. The outer surface sliding sleeve of the slide rod 9 is provided with a slider 8, and the slider 8 is fixedly connected to the filter screen 5. The outer surface movable sleeve of the slide rod 9 is provided with a No. 1 spring 10, and the No. 1 spring 10 is fixedly connected to the slider 8.

[0034] Specifically, when the water flows through the bottom of the feeding pipe 2, under the action of the rotating shaft 3, the water flow drives the fan blades 4 to rotate around the rotating shaft 3. When rotating, the fan blades 4 contact the fixed block 6 and push the fixed block 6 to move upward. At this time, the fixed block 6 drives the filter screen 5 to move synchronously. Under the action of the slide groove 7, the filter screen 5 drives the slider 8 to move upward on the outer surface of the slide rod 9. At this time, the force of the No. 1 spring 10 changes, and the filter screen 5 can filter the fertilizer, so that the fine fertilizer can directly pass through the filter screen 5 and mix and move with the water flow. Under the action of the rolling piece 11 and the protrusion 12, the rolling piece 11 and the protrusion 12 can roll the fertilizer above the filter screen 5, which is convenient for mixing larger fertilizer particles with water, which is beneficial to improving the efficiency of mixing fertilizer and water, and can avoid spraying larger fertilizers directly onto the roots of tomatoes, which is beneficial to ensuring the effect of the fertilizer and improving the efficiency of tomato sprinkler irrigation.

[0035] The moving assembly includes support blocks 13, which are rotatably mounted on both sides of the rolling piece 11. An elastic structure is provided between two adjacent groups of support blocks 13. A plate 16 is rotatably mounted above the support blocks 13. The end of the plate 16 away from the support block 13 is rotatably connected to the center of the feeding pipe 2.

[0036] The elastic structure includes a rod 14 and a No. 2 spring 15. The rod 14 slides through the two groups of support blocks 13. The rod 14 is arranged horizontally. The No. 2 spring 15 is movably sleeved on the outer surface of the rod 14. The No. 2 spring 15 is arranged between the two groups of support blocks 13.

[0037] Specifically, the filter 5 can drive the rolling parts 11 to move synchronously when it is lifted or lowered. Under the action of the support block 13, the rolling parts 11 drive the support block 13 to move synchronously, and the support block 13 drives the plate 16 to rotate. When the rolling parts 11 move downward, the two groups of rolling parts 11 approach each other, and the angle between the two groups of plates 16 decreases. At this time, under the action of the rod 14, the No. 2 spring 15 is deformed by the force. When the rolling parts 11 move upward, the two groups of rolling parts 11 move away from each other, and the angle between the two groups of plates 16 increases, so that when the rolling parts 11 are lifted or lowered, the two groups of rolling parts 11 can move horizontally above the filter 5 to crush the larger fertilizer above the filter 5.

[0038] A blanking piece 18 is provided above the rolling piece 11 , and the blanking piece 18 is connected to one set of support blocks 13 via a rotating structure. A trough 19 is provided inside the blanking piece 18 , and a counterweight plate 20 is slidably installed inside the trough 19 .

[0039] Guide blocks 22 are fixedly mounted on both sides of the counterweight plate 20 . A guide groove 21 is provided inside the blanking piece 18 . The guide groove 21 is communicated with the groove body 19 , and the guide groove 21 and the guide blocks 22 are slidably connected.

[0040] The feeding member 18 can be rotated by the rotating structure. When the trough body 19 opens upward, the counterweight plate 20 moves to the bottom of the trough body 19 under the action of gravity. At this time, the counterweight plate 20 drives the guide block 22 to slide inside the guide groove 21, and the fertilizer enters the interior of the trough body 19 through the feed port 17. The rotating structure drives the feeding member 18 to rotate one hundred and eighty degrees. At this time, the trough body 19 opens downward. Under the action of the counterweight plate 20, the counterweight plate 20 pushes the fertilizer inside the trough body 19 into the interior of the feeding pipe 2. At the same time, the fertilizer can be added to the interior of the trough body 19 again, which is convenient for quantitative addition of fertilizer and can improve the efficiency of feeding. In actual operation, it is only necessary to place the bucket filled with fertilizer above the feeding pipe 2, and the feeding port opened on the fertilizer bucket is connected to the feeding port 17 to realize automatic feeding. When fertilizer is not needed, the feeding port 17 can be blocked.

[0041] The rotating structure includes a shaft 23, which is fixedly mounted at both ends of the blanking member 18. The shaft 23 is rotatably connected to the feeding tube 2. A gear 24 is fixedly sleeved on the outer surface of the shaft 23. A rack 25 is slidably mounted inside the feeding tube 2. The rack 25 is meshed with the gear 24. A telescopic rod 26 is fixedly mounted below the rack 25. The end of the telescopic rod 26 away from the rack 25 is fixedly connected to one of the groups of support blocks 13.

[0042] Specifically, when the rolling piece 11 drives the support block 13 to move, the support block 13 can drive the rack 25 to move horizontally through the telescopic rod 26. The rack 25 and the gear 24 are engaged, so the rack 25 can drive the shaft 23 to rotate through the gear 24, thereby providing power for the rotation of the blanking piece 18.

[0043] The swinging mechanism includes a rotating part 30, which is rotatably installed inside the connecting pipe 29. A blade 31 and a No. 1 magnet 32 are fixedly installed on the outer surface of the rotating part 30. The No. 1 magnet 32 is located above the blade 31. A No. 2 magnet 33 is fixedly installed on the inner wall of the water spray pipe 28. The No. 1 magnet 32 and the No. 2 magnet 33 attract each other. A limit block 34 is fixedly installed on the inner wall of the connecting pipe 29. The limit block 34 is in contact with the No. 2 magnet 33.

[0044] Specifically, the mixed water flows from the main pipe 1 to the inside of the branch pipe 27, and enters the inside of the water spray pipe 28 with the cooperation of the connecting pipe 29. At this time, the water flow contacts the blades 31 and drives the rotating part 30 to rotate through the blades 31. The blades 31 can further mix the fertilizer and water. At the same time, the rotating part 30 can drive the No. 1 magnet 32 to rotate. The No. 1 magnet 32 can contact the No. 2 magnet 33 when rotating. The No. 1 magnet 32 and the No. 2 magnet 33 are attracted. The No. 1 magnet 32 can drive the water spray pipe 28 to rotate through the No. 2 magnet 33. At this time, the elastic part 35 is deformed by the force. When the No. 2 magnet 33 contacts the limit block 34, the No. 2 magnet 33 stops moving. Under the action of the elastic part 35, the water spray pipe 28 can be reset, so that the water spray pipe 28 can spray water 180 degrees, avoiding water accumulation while preventing water from being sprayed above the branch pipe 27, thereby fully utilizing water resources.

[0045] Working principle: Fertilizer is added to the inside of the feeding pipe 2 through the feeding port 17, and water flows inside the main pipe 1. When the water flows through the feeding pipe 2, under the action of the rotating shaft 3, the water flow drives the fan blades 4 to rotate around the rotating shaft 3. When the fan blades 4 rotate, they contact the fixed block 6 and push the fixed block 6 to move upward. At this time, the fixed block 6 drives the filter 5 to move synchronously. Under the action of the chute 7, the filter 5 drives the slider 8 to move upward on the outer surface of the slide rod 9. At this time, the force of the No. 1 spring 10 changes, and the filter 5 can filter the fertilizer, so that the fine fertilizer can directly pass through the filter 5 and mix and move with the water flow. Under the action of the rolling piece 11 and the protrusion 12, the rolling piece 11 and the protrusion 12 can roll the fertilizer above the filter 5.

[0046] When the filter 5 is lifted or lowered, it can drive the rolling parts 11 to move synchronously. Under the action of the support block 13, the rolling parts 11 drive the support block 13 to move synchronously, and the support block 13 drives the plate 16 to rotate. When the rolling parts 11 move downward, the two groups of rolling parts 11 approach each other, and the angle between the two groups of plates 16 decreases. At this time, under the action of the rod 14, the No. 2 spring 15 is deformed by the force. When the rolling parts 11 move upward, the two groups of rolling parts 11 move away from each other, and the angle between the two groups of plates 16 increases, so that when the rolling parts 11 are lifted or lowered, the two groups of rolling parts 11 can move horizontally above the filter 5 to crush the larger fertilizer above the filter 5.

[0047] When the rolling part 11 drives the support block 13 to move, the support block 13 can drive the rack 25 to move horizontally through the telescopic rod 26. The rack 25 and the gear 24 are engaged, so the rack 25 can drive the shaft 23 to rotate through the gear 24, thereby providing power for the rotation of the blanking part 18. When the trough body 19 opens upward, the counterweight plate 20 moves to the bottom of the trough body 19 under the action of gravity. At this time, the counterweight plate 20 drives the guide block 22 to slide inside the guide groove 21, and the fertilizer enters the interior of the trough body 19 through the feed port 17. The rotating structure drives the blanking part 18 to rotate one hundred and eighty degrees. At this time, the trough body 19 opens downward. Under the action of the counterweight plate 20, the counterweight plate 20 pushes the fertilizer inside the trough body 19 to the inside of the feeding pipe 2. At the same time, the fertilizer can be added to the interior of the trough body 19 again.

[0048] The mixed water flows from the main pipe 1 to the inside of the branch pipe 27, and enters the inside of the water spray pipe 28 with the cooperation of the connecting pipe 29. At this time, the water flow contacts the blades 31 and drives the rotating part 30 to rotate through the blades 31. The blades 31 can further mix the fertilizer and water. At the same time, the rotating part 30 can drive the No. 1 magnet 32 to rotate. When rotating, the No. 1 magnet 32 can contact the No. 2 magnet 33. The No. 1 magnet 32 and the No. 2 magnet 33 are attracted to each other. The No. 1 magnet 32 can drive the water spray pipe 28 to rotate through the No. 2 magnet 33. At this time, the elastic part 35 is deformed by the force. When the No. 2 magnet 33 contacts the limit block 34, the No. 2 magnet 33 stops moving. Under the action of the elastic part 35, the water spray pipe 28 can be reset, so that the water spray pipe 28 can spray water 180 degrees.

[0049] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0050] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency sprinkler irrigation water guide structure for a multi-span greenhouse for raising tomato seedlings, comprising a main pipe (1) and a branch pipe (27), characterized in that: The branch pipe (27) is fixedly installed on one side of the main pipe (1), a feeding pipe (2) is fixedly installed above the main pipe (1), a feeding port (17) is opened above the feeding pipe (2), a mixing device is provided inside the feeding pipe (2), connecting pipes (29) are fixedly installed on both sides of the branch pipe (27), a water spray pipe (28) is rotatably installed above the connecting pipe (29) through an elastic member (35), and a swing mechanism is provided between the water spray pipe (28) and the connecting pipe (29).

2. The high-efficiency sprinkler irrigation water guide structure for a multi-span greenhouse for raising tomato seedlings according to claim 1 is characterized by: The mixing device comprises a rotatable shaft (3), the shaft (3) being rotatably mounted inside the feeding pipe (2), the shaft (3) being arranged horizontally, a fan blade (4) being fixedly mounted on the outer surface of the shaft (3), and a rolling mechanism being arranged above the fan blade (4).

3. The high-efficiency sprinkler irrigation water guide structure for a multi-span greenhouse for raising tomato seedlings according to claim 2 is characterized by: The rolling mechanism includes a filter (5), which is installed inside the feeding pipe (2) through a sliding structure. A fixed block (6) is fixedly installed below the filter (5), and the fixed block (6) is in contact with the fan blade (4). Two groups of rolling parts (11) are provided above the filter (5), and the rolling parts (11) are connected to the feeding pipe (2) through a moving component. A protrusion (12) is fixedly installed on the outer surface of the rolling part (11).

4. The high-efficiency sprinkler irrigation water guide structure for a multi-span greenhouse for raising tomato seedlings according to claim 3 is characterized by: The sliding structure includes a slide groove (7), the slide groove (7) is opened on the inner wall of the feeding pipe (2), a slide rod (9) is fixedly installed inside the slide groove (7), the outer surface sliding sleeve of the slide rod (9) is provided with a slider (8), the slider (8) and the filter screen (5) are fixedly connected, and the outer surface movable sleeve of the slide rod (9) is provided with a No. 1 spring (10), and the No. 1 spring (10) and the slider (8) are fixedly connected.

5. The high-efficiency sprinkler irrigation water guide structure for a multi-span greenhouse for raising tomato seedlings according to claim 3 is characterized by: The moving assembly includes support blocks (13), which are rotatably mounted on both sides of the rolling member (11). An elastic structure is provided between two adjacent groups of support blocks (13). A plate (16) is rotatably mounted above the support blocks (13). The end of the plate (16) away from the support blocks (13) is rotatably connected to the center of the feeding pipe (2).

6. The high-efficiency sprinkler irrigation water guide structure for a multi-span greenhouse for raising tomato seedlings according to claim 5, characterized in that: The elastic structure comprises a rod (14) and a No. 2 spring (15), wherein the rod (14) slides through the two groups of support blocks (13), the rod (14) is arranged horizontally, the No. 2 spring (15) is movably sleeved on the outer surface of the rod (14), and the No. 2 spring (15) is arranged between the two groups of support blocks (13).

7. The high-efficiency sprinkler irrigation water guide structure for a multi-span greenhouse for raising tomato seedlings according to claim 5, characterized in that: A blanking piece (18) is provided above the rolling piece (11), and the blanking piece (18) is connected to one of the support blocks (13) via a rotating structure. A trough (19) is provided inside the blanking piece (18), and a counterweight plate (20) is slidably installed inside the trough (19).

8. The high-efficiency sprinkler irrigation water guide structure for a multi-span greenhouse for raising tomato seedlings according to claim 7, characterized in that: Guide blocks (22) are fixedly mounted on both sides of the counterweight plate (20), a guide groove (21) is provided inside the blanking piece (18), the guide groove (21) is communicated with the groove body (19), and the guide groove (21) and the guide block (22) are slidably connected.

9. The high-efficiency sprinkler irrigation water guide structure for a multi-span greenhouse for raising tomato seedlings according to claim 7, characterized in that: The rotating structure includes a shaft (23), the shaft (23) is fixedly mounted on both ends of the blanking member (18), the shaft (23) and the feeding tube (2) are rotatably connected, the outer surface of the shaft (23) is fixedly sleeved with a gear (24), the interior of the feeding tube (2) is slidably mounted with a rack (25), the rack (25) and the gear (24) are meshed, a telescopic rod (26) is fixedly mounted below the rack (25), and one end of the telescopic rod (26) away from the rack (25) is fixedly connected to one of the support blocks (13).

10. The high-efficiency sprinkler irrigation water guide structure for a multi-span greenhouse for raising tomato seedlings according to claim 1, characterized in that: The swing mechanism includes a rotating member (30), the rotating member (30) is rotatably mounted inside the connecting pipe (29), a blade (31) and a first magnet (32) are fixedly mounted on the outer surface of the rotating member (30), the first magnet (32) is located above the blade (31), a second magnet (33) is fixedly mounted on the inner wall of the water spray pipe (28), the first magnet (32) and the second magnet (33) attract each other, and a limit block (34) is fixedly mounted on the inner wall of the connecting pipe (29), the limit block (34) and the second magnet (33) are in contact and fit.

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