An automatic irrigation device for seedling tray cultivation

Abstract

This invention belongs to the technical field of automatic irrigation equipment for seedling cultivation, specifically an automatic irrigation device for tray seedling cultivation. It includes a conveyor with a water tank fixedly installed at its bottom. The water tank is connected to a water pipe via a water pump. A crossbeam is fixedly installed on the conveyor, and seedling trays are mounted on the conveyor. A water spraying mechanism is installed at the bottom of the crossbeam to assist water flow into the seedling substrate. The water spraying mechanism includes an electric push rod fixedly installed at the bottom of the crossbeam. In this invention, the electric push rod moves a rectangular frame and a rectangular tube towards the seedling tray. The rectangular tube inserts into the substrate of the seedling tray, and a support block scrapes the seedling substrate within the tray, creating gaps. The gap between the two fixed blocks is also increased, allowing water to flow out through the gap between the two fixed blocks. This, combined with two sets of staggered fixed frames, better sprays water into the seedling substrate of the seedling tray.

Description

Technical Field

[0001] This invention belongs to the technical field of automatic irrigation equipment for seedling cultivation, specifically an automatic irrigation equipment for tray seedling cultivation. Background Technology

[0002] Plug seedling technology is a modern seedling cultivation technique that uses lightweight, soilless substrate materials such as peat moss and vermiculite as the seedling substrate, and employs mechanized precision sowing, planting one seed per hole for a single seedling. It is a plant propagation method that involves transplanting seedlings into specific plug trays and adding appropriate substrates (such as soil and seeds) to provide the plants with sufficient nutrition and protection, thereby accelerating their development.

[0003] The seedling trays are placed on the conveyor belt of the sowing production line, and the seedling substrate and seeds are sequentially placed into the seedling trays by subsequent sowing mechanisms, thus completing the tray loading process. Finally, the loaded seedling trays are watered to promote seedling growth.

[0004] Existing spraying systems typically atomize water and spray it onto the top of the seedling trays. This results in water remaining on the surface of the substrate, making it difficult for the water to penetrate into the interior. Consequently, the upper layer of the substrate is moist while the lower layer remains dry, leading to uneven moisture distribution and hindering normal root growth. In high-temperature or dry environments, the moisture on the substrate surface evaporates easily, resulting in significant water waste.

[0005] Therefore, the present invention provides an automatic irrigation device for seedling tray cultivation. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this invention to solve its technical problem is as follows: An automatic irrigation device for tray seedling cultivation according to this invention includes a conveyor, a water tank fixedly installed at the bottom of the conveyor, a water pipe connected to the inside of the water tank via a water pump, a crossbeam fixedly installed on the conveyor, and seedling trays provided on the conveyor; a spraying mechanism is provided at the bottom of the crossbeam to assist water flow into the seedling substrate, the spraying mechanism including an electric push rod fixedly installed at the bottom of the crossbeam, a hollow rectangular frame fixedly installed at the output end of the electric push rod, and the rectangular frame connected to the water tank via a water pipe. The rectangular frame has a rectangular tube fixedly installed at its bottom, which is connected to the interior. The interior of the rectangular tube has two symmetrically arranged sliding grooves. The sliding grooves are connected to sliders by a first spring. A rectangular block is slidably connected to one end of the two sliders that are close to each other. A triangular fixing block is fixedly installed at the other end of the rectangular block that is away from the slider. The bottom of the fixing block is provided with a support mechanism to support the fixing block. The rectangular tube is also provided with a guide mechanism to assist in the movement of the fixing block, as well as a spraying mechanism to spray water from the rectangular tube onto the surface of the seedling substrate.

[0008] Furthermore, the support mechanism includes two sets of fixed frames symmetrically arranged around a rectangular tube as the central axis. The fixed frames and fixed blocks are fixedly connected and are arc-shaped. An arc-shaped support block is slidably connected inside the fixed frame through an elastic element. A roller is rotatably connected to one side of the support block. The two sets of fixed frames are staggered.

[0009] Furthermore, the guiding mechanism includes a guide block fixedly installed inside a rectangular tube, arc-shaped guide plates fixedly installed on both sides of the guide block, and a rotating column rotatably connected to the side of the guide plate away from the guide block.

[0010] Furthermore, the spraying mechanism includes two circular tubes symmetrically arranged inside a rectangular tube. The circular tubes and the rectangular tube are slidably connected. A sleeve plate is fixedly fitted on the surface of the circular tube. A second spring is fixedly installed between the sleeve plate and the rectangular tube. Several spray holes are opened at the bottom of the circular tube. A filter screen is fixedly installed inside the spray holes. The end of the circular tube away from the rectangular tube is closed. A push plate is fixedly installed on one side of the fixing block.

[0011] Furthermore, a push plate that fits against the sleeve plate is fixedly installed on one side of the fixing block, and the top of the push plate is inclined.

[0012] Furthermore, the bottom of the electric push rod is provided with a cleaning mechanism for blowing air onto the bottom of the rectangular tube. The cleaning mechanism includes a rectangular plate fixedly sleeved on the surface of the electric push rod. A hollow elastic block covering the output end of the electric push rod is fixedly installed on the bottom of the rectangular plate. Several air outlet pipes communicating with the interior are fixedly installed on both sides of the elastic block. The end of the air outlet pipe away from the elastic block is close to the rectangular tube.

[0013] Furthermore, a trumpet-shaped guide tube is fixedly installed inside the air outlet pipe, and one end of the guide tube has a guide hole that penetrates itself.

[0014] Furthermore, a multi-stage telescopic tube is fixedly installed at the bottom of the electric push rod to cover the output end. The end of the multi-stage telescopic tube away from the electric push rod is fixedly connected to the rectangular frame. The multi-stage telescopic tube is composed of several hollow tubes that are slidably connected.

[0015] Furthermore, brush plates are fixedly installed on both sides of the rectangular frame, and one end of the circular tube is located in the middle of the brush plates.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. The automatic irrigation device for seedling trays described in this invention uses an electric push rod to move a rectangular frame and a rectangular tube towards the seedling tray. The rectangular tube is inserted into the substrate of the seedling tray. Support blocks scrape the substrate within the tray, creating gaps and increasing the gap between the two fixed blocks. This allows water to flow out through the gaps between the two fixed blocks, and, in conjunction with two sets of staggered fixed frames, better sprays water into the substrate of the seedling tray. This ensures that water spraying into the substrate is no longer simply surface spraying, but rather penetrates deep into the substrate, guaranteeing even water distribution within the substrate and effectively preventing surface spraying that leads to water evaporation, thus promoting better root growth.

[0018] 2. The automatic irrigation device for seedling trays described in this invention involves a fixed block that moves along with a push plate. The push plate, via a sleeve plate, moves a circular tube away from a rectangular tube, allowing the circular tube to extend beyond the rectangular tube. The circular tube is positioned at the top of the seedling substrate, and the water sprayed from the outlet holes irrigates the top of the substrate. A designed filter effectively disperses the water and reduces the risk of impurities entering the circular tube and causing blockages when not in use. This spraying mechanism simultaneously waters the top surface of the seedling substrate, resulting in more even water distribution and promoting better root growth in the seedling trays.

[0019] 3. The automatic irrigation device for tray seedling cultivation described in this invention utilizes the fact that the round tube contacts the brush inside the brush plate during resetting, allowing the brush to clean the surface of the round tube and reduce the amount of impurities carried by the round tube into the rectangular tube. As the rectangular frame and rectangular tube reset, the rectangular frame compresses the elastic block at the bottom of the rectangular plate, causing gas inside the elastic block to be ejected. The ejected gas is guided by the guide tube, thereby increasing the area covered and achieving a better cleaning effect. Simultaneously, the multi-stage telescopic tube, in conjunction with the telescopic movement of the rectangular frame, protects the output end of the electric push rod and effectively prevents the deformed elastic block from contacting and damaging the output end of the electric push rod. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a three-dimensional structural diagram of the conveyor in this invention;

[0022] Figure 2 This is a structural schematic diagram of the crossbeam in this invention;

[0023] Figure 3 This is a schematic diagram of the structure at the rectangular frame in this invention;

[0024] Figure 4 This is a cross-sectional view of the rectangular tube in this invention;

[0025] Figure 5 This is a schematic diagram of the structure of the guide block in this invention;

[0026] Figure 6 This is a schematic diagram of the structure at the fixing block in this invention;

[0027] Figure 7 This is a partial structural diagram of the fixed frame in this invention;

[0028] Figure 8 This is a schematic diagram of the structure of the circular tube in this invention;

[0029] Figure 9 This is a cross-sectional view of the air outlet pipe in this invention;

[0030] Figure 10 In this invention Figure 3 A schematic diagram of the structure at point A.

[0031] In the diagram: 1. Conveyor; 2. Water tank; 3. Water pipe; 4. Crossbeam; 5. Seedling tray;

[0032] 10. Water spray mechanism; 11. Electric push rod; 12. Rectangular frame; 13. Rectangular tube; 14. Slide groove; 15. Slider; 16. Rectangular block; 17. Fixed block; 18. First spring;

[0033] 20. Support mechanism; 21. Fixed frame; 22. Support block; 23. Roller;

[0034] 30. Guiding mechanism; 31. Guide block; 32. Guide plate; 33. Rotating column;

[0035] 40. Spraying mechanism; 41. Circular tube; 42. Sleeve plate; 43. Second spring; 44. Push plate; 45. Spray hole; 46. Filter screen;

[0036] 50. Cleaning mechanism; 51. Rectangular plate; 52. Elastic block; 53. Air outlet pipe; 54. Guide pipe; 55. Guide hole; 56. Multi-stage telescopic pipe; 57. Brush plate. Detailed Implementation

[0037] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0038] like Figures 1 to 10 As shown in the figure, an automatic irrigation device for seedling trays according to an embodiment of the present invention includes a conveyor 1, a water tank 2 fixedly installed at the bottom of the conveyor 1, a water pipe 3 connected to the inside of the water tank 2 via a water pump, a crossbeam 4 fixedly installed on the conveyor 1, and seedling trays 5 provided on the conveyor 1; a water spraying mechanism 10 for assisting water flow into the seedling substrate is provided at the bottom of the crossbeam 4, the water spraying mechanism 10 includes an electric push rod 11 fixedly installed at the bottom of the crossbeam 4, a hollow rectangular frame 12 fixedly installed at the output end of the electric push rod 11, the rectangular frame 12 being connected to the water tank 2 via the water pipe 3, a rectangular tube 13 connected to the bottom of the rectangular frame 12 being fixedly installed, two symmetrically arranged sliding grooves 14 being opened inside the rectangular tube 13, sliders 15 being slidably connected inside the sliding grooves 14 via a first spring 18, a rectangular block 16 being slidably connected at the end of the two sliders 15 that are close to each other, and a triangular fixing block 17 being fixedly installed at the end of the rectangular block 16 that is away from the sliders 15.

[0039] Specifically, a support mechanism 20 is provided at the bottom of the fixed block 17 to support the fixed block 17. The support mechanism 20 includes two sets of fixed frames 21 symmetrically arranged around the rectangular tube 13 as the central axis. The fixed frames 21 and the fixed block 17 are fixedly connected and are arc-shaped. An arc-shaped support block 22 is slidably connected inside the fixed frame 21 through an elastic element. A roller 23 is rotatably connected to one side of the support block 22. The two sets of fixed frames 21 are staggered.

[0040] Specifically, a guide mechanism 30 is also provided inside the rectangular tube 13 to assist in the movement of the fixed block 17. The guide mechanism 30 includes a guide block 31 fixedly installed inside the rectangular tube 13. Arc-shaped guide plates 32 are fixedly installed on both sides of the guide block 31. A rotating column 33 is rotatably connected to the side of the guide plate 32 away from the guide block 31.

[0041] During operation, when the conveyor 1 moves the seedling tray 5 containing seedling substrate and seeds towards the crossbeam 4, the water pump in the water tank 2 is activated to deliver water through the water pipe 3 to the rectangular frame 12. When the seedling tray 5 reaches directly below the rectangular tube 13, the position sensor detects this and sends a signal to the electric push rod 11. The electric push rod 11 then moves the rectangular frame 12 and the rectangular tube 13 towards the seedling tray 5. At this time, the rectangular tube 13 inserts into the substrate of the seedling tray 5, causing the bottom support block 22 to contact the bottom of the seedling tray 5. As the rectangular tube 13 continues to move downward, the support block 22 slides and retracts into the fixed frame 21, causing the fixed frame 21, along with the fixed block 17, rectangular block 16, slider 15, and first spring 18, to slide upward within the slide groove 14. At this time, the elastic element inside the fixed frame 21 causes the support block 22 to return to its original position, ensuring that the bottom of the support block 22 remains in contact with the bottom of the seedling tray 5. At this point, the inclined surface of the fixed block 17 contacts the arc-shaped guide plate 32 and rotating column 33 on the side of the guide block 31. The arc-shaped guide plate 32 and rotating column 33 press the fixed block 17 towards the slide groove 14. The fixed block 17 slides and contracts towards the slider 15 via the rectangular block 16. The fixed block 17 moves along with the support block 22 via the fixed frame 21, scraping the seedling substrate in the seedling tray 5 to create gaps. The gap between the two fixed blocks 17 is also increased, allowing water to flow out through the gap. Combined with the two sets of staggered fixed frames 21, this better sprays water into the seedling substrate of the seedling tray 5. This makes spraying water into the seedling substrate no longer a simple surface spray, but rather a deep spray into the substrate, ensuring even water distribution and preventing surface evaporation, thus promoting better root growth.

[0042] A spraying mechanism 40 is provided inside the rectangular tube 13 to spray water onto the surface of the seedling substrate. The spraying mechanism 40 includes two circular tubes 41 symmetrically arranged inside the rectangular tube 13. The circular tubes 41 and the rectangular tube 13 are slidably connected. A sleeve plate 42 is fixedly fitted on the surface of the circular tube 41. A second spring 43 is fixedly installed between the sleeve plate 42 and the rectangular tube 13. Several spray holes 45 are opened at the bottom of the circular tube 41. A filter screen 46 is fixedly installed inside the spray holes 45. The end of the circular tube 41 away from the rectangular tube 13 is closed. A push plate 44 is fixedly installed on one side of the fixing block 17. The push plate 44 is attached to the sleeve plate 42 and the top of the push plate 44 is inclined.

[0043] During operation, when the fixed block 17 moves, it moves the push plate 44 along with it. The push plate 44, through the sleeve plate 42, moves the circular tube 41 away from the rectangular tube 13, allowing the circular tube 41 to extend out of the rectangular tube 13. The circular tube 41 is designed with one end closed so that when water flows past the push plate 44, it is pushed into the circular tube 41 by the tilted push plate. Due to the water flow rate, it continuously flows into the circular tube 41, and the closed end prevents water from spraying out directly, allowing water to fill the entire circular tube 41 before being sprayed out through the spray hole 45 at the bottom and the filter screen 46. It is important to note that at this time, the circular tube 41 is at the top of the seedling substrate, and the water sprayed from the outlet hole is watering the top of the seedling substrate. The designed filter screen 46 effectively disperses the water and reduces the possibility of impurities entering the circular tube 41 and causing blockage when not in use.

[0044] By designing the spraying mechanism 40 as described above, water can be sprayed onto the top surface of the seedling substrate at the same time as the inside of the substrate, making the water sprayed more even and allowing the plant roots in the seedling tray 5 to grow better.

[0045] After the rectangular tube 13 is pulled out of the seedling substrate, the first spring 18 causes the slider 15 to reset. At this time, the rectangular block 16 inside the slider 15, under the action of the elastic element, causes the fixing block 17 to reset, thereby closing the bottom port of the rectangular tube 13. When the fixing block 17 resets, it also resets the push plate 44. The reset of the push plate 44 causes the sleeve plate 42 to no longer be compressed. Then, under the action of the second spring 43, the sleeve plate 42 and the round tube 41 reset, thus facilitating the next use.

[0046] The bottom of the electric push rod 11 is provided with a cleaning mechanism 50 for blowing air onto the bottom of the rectangular tube 13. The cleaning mechanism 50 includes a rectangular plate 51 fixedly sleeved on the surface of the electric push rod 11. A hollow elastic block 52 covering the output end of the electric push rod 11 is fixedly installed at the bottom of the rectangular plate 51. Several air outlet pipes 53 connected to the inside are fixedly installed on both sides of the elastic block 52. The end of the air outlet pipe 53 away from the elastic block 52 is close to the rectangular tube 13. A trumpet-shaped guide pipe 54 is fixedly installed inside the air outlet pipe 53. One end of the guide pipe 54 has a guide hole 55 that passes through it.

[0047] Specifically, a multi-stage telescopic tube 56 covering the output end is fixedly installed at the bottom of the electric push rod 11. The end of the multi-stage telescopic tube 56 away from the electric push rod 11 is fixedly connected to the rectangular frame 12. The multi-stage telescopic tube 56 is composed of several hollow tubes that are slidably connected. Brush plates 57 are fixedly installed on both sides of the rectangular frame 12, and one end of the round tube 41 is located in the middle of the brush plate 57.

[0048] During operation, the round tube 41 contacts the brush inside the brush plate 57 when it resets, using the brush inside the brush plate 57 to clean the surface of the round tube 41, thereby reducing the amount of impurities carried by the round tube 41 into the rectangular tube 13. As the rectangular frame 12 resets with the rectangular tube 13, the rectangular frame 12 squeezes the elastic block 52 at the bottom of the rectangular plate 51, causing the gas inside the elastic block 52 to be sprayed towards the bottom of the rectangular tube 13 through the air outlet pipe 53. When the gas is sprayed out through the air outlet pipe 53, some of the gas is guided to the surrounding area by the trumpet-shaped guide pipe 54, while the other part of the gas is sprayed out through the guide hole 55, thereby increasing the area covered and achieving a better cleaning effect.

[0049] When the electric actuator 11 moves, it moves along with the multi-stage telescopic tube 56. The multi-stage telescopic tube 56, in conjunction with the telescopic movement of the rectangular frame 12, protects the output end of the electric actuator 11. At the same time, when the elastic block 52 is compressed, the multi-stage telescopic tube 56 can effectively prevent the deformed elastic block 52 from contacting the output end of the electric actuator 11, thus preventing damage to the output end of the electric actuator 11.

[0050] Working principle: When the conveyor 1 moves the seedling tray 5 containing seedling substrate and seeds towards the crossbeam 4, the water pump in the water tank 2 is activated to deliver water through the water pipe 3 to the rectangular frame 12. When the seedling tray 5 reaches directly below the rectangular tube 13, the position sensor detects this and sends a signal to the electric push rod 11. The electric push rod 11 moves the rectangular frame 12 and the rectangular tube 13 towards the seedling tray 5. At this time, the rectangular tube 13 inserts into the substrate of the seedling tray 5, and the bottom support block 22 contacts the bottom of the seedling tray 5. As the rectangular tube 13 continues to move downward, the support block 22 slides and retracts into the fixed frame 21, which in turn allows the fixed frame 21, along with the fixed block 17, rectangular block 16, slider 15, and first spring 18, to slide upward in the groove 14. At this time, the elastic element in the fixed frame 21 moves the support block 22 downward to reset, so that the bottom of the support block 22 is always in contact with the bottom of the seedling tray 5. At this time, the inclined surface of the fixed block 17 contacts the arc-shaped guide plate 32 and the rotating column 33 on the side of the guide block 31. The arc-shaped guide plate 32 and the rotating column 33 press the fixed block 17 towards the slide groove 14. The fixed block 17 slides and retracts towards the slider 15 through the rectangular block 16. At this time, the fixed block 17 moves together with the support block 22 through the fixed frame 21. The support block 22 scrapes the seedling substrate in the seedling tray 5, thereby creating gaps. When the fixed block 17 moves, it will move together with the push plate 44. The push plate 44 moves the round tube 41 away from the rectangular tube 13 through the sleeve plate 42, thereby allowing the round tube 41 to extend out of the rectangular tube 13. The round tube 41 is designed to be closed at one end so that when the water flows through the push plate 44, it will be pushed into the round tube 41 by the inclined push plate 44, and then sprayed out through the spray hole 45 and the filter screen 46 at the bottom.

[0051] When the rectangular tube 13 is pulled out of the seedling substrate, the first spring 18 causes the slider 15 to reset. At this time, the rectangular block 16 inside the slider 15, under the action of the elastic element, causes the fixing block 17 to reset, thereby closing the bottom port of the rectangular tube 13. When the fixing block 17 resets, it also resets the push plate 44. The reset of the push plate 44 causes the sleeve plate 42 to no longer be compressed, and then the sleeve plate 42 and the round tube 41 reset under the action of the second spring 43.

[0052] When the round tube 41 is reset, it will come into contact with the brush inside the brush plate 57, and the brush inside the brush plate 57 will clean the surface of the round tube 41. As the rectangular frame 12 resets with the rectangular tube 13, the rectangular frame 12 will squeeze the elastic block 52 at the bottom of the rectangular plate 51, so that the gas inside the elastic block 52 will be sprayed through the vent pipe 53 to the bottom of the rectangular tube 13, and the gas will then be sprayed out through the vent pipe 53 and the guide pipe 54.

[0053] When the electric push rod 11 moves, it will move along with the multi-stage telescopic tube 56. The multi-stage telescopic tube 56, in conjunction with the telescopic movement of the rectangular frame 12, can effectively prevent the deformed elastic block 52 from contacting the output end of the electric push rod 11, thus protecting the output end of the electric push rod 11.

[0054] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0055] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0056] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic irrigation device for seedling trays, comprising a conveyor (1), a water tank (2) fixedly installed at the bottom of the conveyor (1), a water pipe (3) connected to the inside of the water tank (2) by a water pump, a crossbeam (4) fixedly installed on the conveyor (1), and seedling trays (5) provided on the conveyor (1). Its features are: The bottom of the crossbeam (4) is provided with a water spraying mechanism (10) to assist water flow into the seedling substrate. The water spraying mechanism (10) includes an electric push rod (11) fixedly installed at the bottom of the crossbeam (4). A hollow rectangular frame (12) is fixedly installed at the output end of the electric push rod (11). The rectangular frame (12) is connected to the water tank (2) through a water pipe (3). A rectangular tube (13) connected to the inside is fixedly installed at the bottom of the rectangular frame (12). Two symmetrically arranged sliding grooves (14) are opened inside the rectangular tube (13). A slider (15) is slidably connected inside the sliding groove (14) through a first spring (18). A rectangular block (16) is slidably connected at one end of the two sliders (15) that are close to each other. A triangular fixing block (17) is fixedly installed at the end of the rectangular block (16) that is away from the slider (15). The bottom of the fixed block (17) is provided with a support mechanism (20) for supporting the fixed block (17), and the rectangular tube (13) is also provided with a guide mechanism (30) for assisting the movement of the fixed block (17), and a spraying mechanism (40) for spraying water from the rectangular tube (13) onto the surface of the seedling substrate; The support mechanism (20) includes two sets of fixed frames (21) symmetrically arranged around a rectangular tube (13) as the central axis. The fixed frames (21) and fixed blocks (17) are fixedly connected and are arc-shaped. An arc-shaped support block (22) is slidably connected inside the fixed frame (21) through an elastic element. A roller (23) is rotatably connected to one side of the support block (22). The two sets of fixed frames (21) are staggered. The guiding mechanism (30) includes a guide block (31) fixedly installed inside a rectangular tube (13), and arc-shaped guide plates (32) fixedly installed on both sides of the guide block (31). A rotating column (33) is rotatably connected to the side of the guide plate (32) away from the guide block (31).

2. The automatic irrigation device for tray seedling cultivation according to claim 1, characterized in that: The spraying mechanism (40) includes two circular tubes (41) symmetrically arranged inside a rectangular tube (13). The circular tubes (41) and the rectangular tube (13) are slidably connected. A sleeve plate (42) is fixedly fitted on the surface of the circular tube (41). A second spring (43) is fixedly installed between the sleeve plate (42) and the rectangular tube (13). Several spray holes (45) are opened at the bottom of the circular tube (41). A filter screen (46) is fixedly installed inside the spray holes (45). The end of the circular tube (41) away from the rectangular tube (13) is closed. A push plate (44) is fixedly installed on one side of the fixing block (17).

3. The automatic irrigation device for tray seedling cultivation according to claim 2, characterized in that: A push plate (44) that fits against the sleeve plate (42) is fixedly installed on one side of the fixing block (17), and the top of the push plate (44) is inclined.

4. The automatic irrigation device for tray seedling raising according to claim 1, characterized in that: The bottom of the electric push rod (11) is provided with a cleaning mechanism (50) for blowing air onto the bottom of the rectangular tube (13). The cleaning mechanism (50) includes a rectangular plate (51) fixedly sleeved on the surface of the electric push rod (11). A hollow elastic block (52) covering the output end of the electric push rod (11) is fixedly installed at the bottom of the rectangular plate (51). Several air outlet pipes (53) communicating with the interior are fixedly installed on both sides of the elastic block (52). The end of the air outlet pipe (53) away from the elastic block (52) is close to the rectangular tube (13).

5. An automatic irrigation device for tray seedling cultivation according to claim 4, characterized in that: The air outlet pipe (53) has a flared guide pipe (54) fixedly installed inside, and one end of the guide pipe (54) has a guide hole (55) that passes through it.

6. The automatic irrigation device for tray seedling raising according to claim 3, characterized in that: The bottom of the electric push rod (11) is fixedly installed with a multi-stage telescopic tube (56) that covers the output end. The end of the multi-stage telescopic tube (56) away from the electric push rod (11) is fixedly connected to the rectangular frame (12). The multi-stage telescopic tube (56) is composed of several hollow tubes that are slidably connected.

7. An automatic irrigation device for tray seedling cultivation according to claim 2, characterized in that: Brush plates (57) are fixedly installed on both sides of the rectangular frame (12), and one end of the round tube (41) is located in the middle of the brush plate (57).

Images