Greenhouse water and fertilizer automatic drip irrigation system

Abstract

The invention discloses a greenhouse water and fertilizer automatic drip irrigation system, and relates to the technical field of irrigation devices, the greenhouse water and fertilizer automatic drip irrigation system comprises a water and fertilizer supply mechanism, the water and fertilizer supply mechanism comprises a water and fertilizer box assembly, a centralized laying pipeline and ports, the water and fertilizer box assembly is connected with one end of the centralized laying pipeline, and the ports are equidistantly formed in the side face of the centralized laying pipeline; the drip irrigation branch mechanism comprises a hose connecting assembly and a drip irrigation branch pipe, each port is connected with one end of the drip irrigation branch pipe through the hose connecting assembly, and drip irrigation pipe openings are formed in the bottom of each drip irrigation branch pipe at equal intervals; according to the greenhouse water and fertilizer automatic drip irrigation system, water and fertilizer can be conveyed to roots of crops in a drip irrigation mode, the water and fertilizer permeate downwards from the ground, it is ensured that the upper positions of the roots of the crops can absorb nutrients, and the water and fertilizer can be directly conveyed to the position below the ground to prevent volatilization of the water and fertilizer.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of irrigation devices, in particular to a greenhouse water and fertilizer automatic drip irrigation system. BACKGROUND

[0002] In the fine planting mode of the greenhouse, water and fertilizer drip irrigation is generally used for watering and fertilizer application. Specifically, water and fertilizer are mixed and dripped to the crop roots, and water saving is achieved through drip irrigation. The existing greenhouse drip irrigation device generally uses a continuous control pump body to supply water and fertilizer. Water and fertilizer are prone to crystallization and blockage in the drip irrigation hole with slow flow rate. During drip irrigation, water and fertilizer is first on the ground and then gradually penetrates into the ground. Under the high temperature in the greenhouse, some water and fertilizer is prone to volatilization during the waiting process on the ground, affecting its fertility. SUMMARY

[0003] The technical problem to be solved by the present application is to overcome the existing defects and provide a greenhouse water and fertilizer automatic drip irrigation system. Water and fertilizer can be delivered to the crop roots by drip irrigation. Water and fertilizer penetrates downward from the ground, ensuring that the upper part of the crop roots can also absorb nutrients, irrigation is sufficient, and the drip irrigation speed of water and fertilizer can be controlled by the degree of the clear blockage speed control cone extending into the drip irrigation water control ring. The clear blockage speed control cone can also be completely inserted into the drip irrigation water control ring to periodically clean the crystallization and other blockages on the inside of the drip irrigation water control ring. In addition to ground drip irrigation, water and fertilizer can also be delivered directly below the ground to prevent water and fertilizer from volatilizing, effectively solving the problems in the background art.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a greenhouse water and fertilizer automatic drip irrigation system, comprising a water and fertilizer supply mechanism, the water and fertilizer supply mechanism comprising a water and fertilizer tank assembly, a centralized laying pipeline and a port, the water and fertilizer tank assembly being connected to one end of the centralized laying pipeline, and the side surface of the centralized laying pipeline being provided with ports at equal distances, further comprising: a drip irrigation branch mechanism comprising a hose connection assembly, a drip irrigation branch pipe and a drip irrigation pipe port, each port being connected to one end of the drip irrigation branch pipe through the hose connection assembly, and the bottom of each drip irrigation branch pipe being provided with drip irrigation pipe ports at equal distances; a ground drip irrigation mechanism installed in the drip irrigation pipe port, and the ground drip irrigation mechanism being connected to the drip irrigation branch pipe through a drip irrigation switching control mechanism; a water and fertilizer underground irrigation control mechanism installed on the ground drip irrigation mechanism; a drip irrigation position control mechanism installed on the side surface of the ground drip irrigation mechanism.

[0005] The water and fertilizer tank assembly is used for containing and supplying water and fertilizer. The water and fertilizer in the water and fertilizer tank assembly enters the concentrated laying pipeline due to gravity. The concentrated laying pipeline is laid at the edge of the greenhouse. The water and fertilizer in the concentrated laying pipeline enters the drip irrigation branch pipe through the port and the hose connecting assembly, and then is discharged through the drip irrigation pipe port. The drip irrigation position control mechanism can adjust the position of drip irrigation according to the row spacing of plants, so that the water and fertilizer can be directly applied to the position close to the plant root. The drip irrigation switching control mechanism is used to drive the drip irrigation branch pipe and the drip irrigation pipe port to move up and down relative to the ground drip irrigation mechanism. Through the cooperation of the ground drip irrigation mechanism and the drip irrigation pipe port, the speed of discharging water and fertilizer from the drip irrigation pipe port can be controlled. The ground drip irrigation mechanism can also completely block the drip irrigation pipe port to stop drip irrigation. When the ground drip irrigation mechanism completely blocks the drip irrigation pipe port, the water and fertilizer underground irrigation control mechanism is opened to send the water and fertilizer to the soil below the ground, so that the water and fertilizer can be irrigated below the ground. The water and fertilizer directly enters the soil, reduces volatilization on the ground, and is suitable for the application of water and fertilizer prone to volatilization.

[0006] Further, the ground drip irrigation mechanism comprises an irrigation vertical pipe, a drip irrigation water outlet control ring, a clogging and speed control cone sleeve and a sharp head. The irrigation vertical pipe is arranged in the drip irrigation pipe port. The drip irrigation pipe port is fixedly connected with the drip irrigation water outlet control ring on the inner side. The inner diameter of the drip irrigation water outlet control ring is larger than the outer diameter of the irrigation vertical pipe. The top of the irrigation vertical pipe is fixedly connected with the clogging and speed control cone sleeve on the outer side. The bottom of the clogging and speed control cone sleeve has a smaller outer diameter than the top. The bottom end of the irrigation vertical pipe is provided with the sharp head. The sharp head is beneficial to the insertion of the irrigation vertical pipe into the soil. When the drip irrigation switching control mechanism drives the drip irrigation branch pipe and the drip irrigation pipe port to move upward relative to the irrigation vertical pipe, the bottom of the clogging and speed control cone sleeve gradually extends into the drip irrigation water outlet control ring. The annular gap between the clogging and speed control cone sleeve and the drip irrigation water outlet control ring gradually decreases. At this time, the drip irrigation speed of the water and fertilizer gradually slows down. If the drip irrigation switching control mechanism drives the drip irrigation branch pipe and the drip irrigation pipe port to continue to move upward relative to the irrigation vertical pipe, the drip irrigation water outlet control ring is driven to move upward until the clogging and speed control cone sleeve cannot continue to extend into the drip irrigation water outlet control ring. At this time, the clogging and speed control cone sleeve can clean the blockage such as crystals on the inner wall of the drip irrigation water outlet control ring to prevent the blockage from affecting drip irrigation after a long time of drip irrigation. If the drip irrigation switching control mechanism drives the drip irrigation branch pipe and the drip irrigation pipe port to move downward relative to the irrigation vertical pipe, the drip irrigation water outlet control ring is driven to move downward. The bottom of the clogging and speed control cone sleeve gradually moves away from the drip irrigation water outlet control ring. The annular gap between the clogging and speed control cone sleeve and the drip irrigation water outlet control ring gradually increases. The drip irrigation speed of the water and fertilizer gradually increases.

[0007] Further, the ground drip irrigation mechanism further comprises a bottom sealing disc, a water outlet hole, a guide pipe, a sealing ring groove, a water outlet blocking plug and a sealing water blocking ring. The bottom edge of the drip irrigation pipe opening is provided with a sealing ring groove. The outer side of the irrigation vertical pipe is fixedly sleeved with a bottom sealing disc below the drip irrigation pipe opening. The upper side of the bottom sealing disc is provided with a sealing water blocking ring corresponding to the sealing ring groove. Two water outlet holes are respectively arranged on the front and rear sides of the bottom sealing disc. The bottom of the two water outlet holes is respectively connected to the top of two guide pipes. The bottom of the drip irrigation pipe opening is respectively fixedly connected to two water outlet blocking plugs corresponding to the two water outlet holes. Water and fertilizer are discharged from the annular gap between the clear block control speed cone sleeve and the drip irrigation outlet control ring, fall on the area inside the sealing water blocking ring on the bottom sealing disc, and the sealing water blocking ring plays the role of "cofferdam" at this time. Water and fertilizer enter the guide pipe through the water outlet hole, then fall on the drip irrigation position control mechanism after being discharged through the bottom of the guide pipe, and are guided to the area near the plant root by the drip irrigation position control mechanism. Since each irrigation vertical pipe has two sets of water outlet holes and guide pipes in front and back, one drip irrigation branch pipe can be responsible for the drip irrigation work of two rows of plants. When the annular gap, water outlet hole and guide pipe are not needed for drip irrigation, the drip irrigation switching control mechanism drives the drip irrigation branch pipe and the drip irrigation pipe opening to continuously move downward relative to the irrigation vertical pipe until the top of the bottom sealing disc contacts the bottom of the drip irrigation pipe opening. At this time, the water outlet blocking plug blocks the corresponding water outlet hole, and the sealing water blocking ring is in the sealing ring groove. Water and fertilizer can no longer be discharged from the bottom of the drip irrigation pipe opening, so that the drip irrigation work at this place stops.

[0008] Further, the drip irrigation switching control mechanism comprises a mounting frame, an anchor hole, an electric telescopic rod and a vertical movement guiding assembly. The bottom of each drip irrigation branch pipe is respectively provided with a mounting frame. The front and rear sides of the mounting frame are respectively provided with anchor holes horizontally and equidistantly. The middle part of the mounting frame is fixedly connected to the corresponding irrigation vertical pipe, and the mounting frame is connected to the drip irrigation branch pipe through the vertical movement guiding assembly. A vertical electric telescopic rod is installed on the mounting frame, and the top end of the electric telescopic rod is fixedly connected to the bottom of the drip irrigation branch pipe. The anchor rod is inserted into the anchor hole. The mounting frame can be stably fixed to the ground by means of the anchor rod, so that the irrigation vertical pipe is stably fixed and installed vertically. The vertical movement guiding assembly enables the drip irrigation branch pipe to stably move up and down relative to the mounting frame and the irrigation vertical pipe. The electric telescopic rod can drive the drip irrigation branch pipe to move up and down relative to the irrigation vertical pipe by elongation and shortening.

[0009] Further, the water and fertilizer underground irrigation control mechanism comprises an inner sleeve, a control plug, a compression spring, a sliding ring, a control column, an assembly opening, a sealing cover and an open valve thimble, the top inner side of the irrigation vertical pipe is threadedly connected with the inner sleeve, the sliding ring is installed at a position below the center of the inner sleeve in the irrigation vertical pipe, the control column is slidingly connected in the sliding ring in the vertical direction, the bottom center of the control plug is fixedly connected with the top end of the control column, the compression spring is sleeved with the control column at a position above the sliding ring, the assembly opening is arranged at a position corresponding to the drip irrigation pipe opening at the top of the drip irrigation branch pipe, the sealing cover is threadedly connected with the assembly opening, and the top end of the open valve thimble is fixedly connected with the bottom of the sealing cover.

[0010] The elastic force of the compression spring pushes the control plug and the control column to move upwards along the sliding ring, the top of the control plug closes the conical opening at the bottom of the inner sleeve, and at this time, the water and fertilizer in the drip irrigation branch pipe cannot enter the irrigation vertical pipe; When the drip irrigation switching control mechanism drives the drip irrigation branch pipe and the drip irrigation pipe opening to continuously move downwards relative to the irrigation vertical pipe until the top of the bottom sealing disc contacts the bottom of the drip irrigation pipe opening, the water and fertilizer can no longer be discharged from the bottom of the drip irrigation pipe opening, the drip irrigation work stops at this position, at this time, the open valve thimble moves downwards until the bottom of the open valve thimble pushes the control plug downwards, at this time, the compression spring is compressed, the control plug and the control column slide downwards along the sliding ring, the top of the control plug is away from the conical opening at the bottom of the inner sleeve, the water and fertilizer in the drip irrigation branch pipe enters the irrigation vertical pipe, and the water and fertilizer in the irrigation vertical pipe directly seeps into the soil below the ground through the water and fertilizer underground irrigation mechanism, so that the water and fertilizer does not stay above the ground, the volatilization loss of the volatile water and fertilizer is reduced, and thus, the drip irrigation switching control mechanism cooperates with the water and fertilizer underground irrigation control mechanism to realize the function switching of the ground drip irrigation to the direct irrigation in the soil below the ground.

[0011] Further, the drip irrigation position control mechanism comprises a drip irrigation movable tank, guide rails, a drip irrigation extension tank, guide strips and fastening bolts, one end of the drip irrigation movable tank is movably connected to the position below the outer side of the irrigation vertical pipe, two guide rails are arranged on the two sides of the drip irrigation movable tank, the drip irrigation extension tank is arranged on the lower side of the drip irrigation movable tank, two guide strips are arranged on the two sides of the drip irrigation extension tank, the two guide strips are slidably connected to the two guide rails, and the end of each guide rail away from the irrigation vertical pipe is threadedly connected with a fastening bolt, and the fastening bolt abuts against the side surface of the corresponding guide strip. The water and fertilizer falling from the guide pipe falls on the drip irrigation movable tank, then falls into the drip irrigation extension tank, and finally reaches the ground near the plant roots. The fastening bolt is loosened, the drip irrigation movable tank can move relative to the irrigation vertical pipe, the angle between the drip irrigation movable tank and the ground is changed, the guide strips and the guide rails cooperate to realize the sliding of the drip irrigation extension tank relative to the drip irrigation movable tank, so that the length of the drip irrigation tank composed of the drip irrigation movable tank and the drip irrigation extension tank is changed, the fastening bolt is tightened after adjustment, the drip irrigation movable tank and the drip irrigation extension tank are locked, and thus the bottom end of the drip irrigation extension tank is just close to the plant roots, the drip irrigation distance can be adjusted, the drip irrigation position is more accurate, and the use of water and fertilizer is more sufficient.

[0012] Further, the underground water and fertilizer irrigation mechanism comprises a side through groove, an underground irrigation cylinder, a water outlet through hole, a sealing rubber ring one, a sealing rubber ring two, an insertion cone sleeve, a soil invasion prevention blocking assembly and an underground irrigation depth control assembly, the bottom of the irrigation vertical pipe is slidably sleeved with the underground irrigation cylinder, the part of the irrigation vertical pipe in the underground irrigation cylinder is provided with the side through groove, the annular groove in the inner side of the top end of the underground irrigation cylinder is provided with the sealing rubber ring one, the annular groove in the inner side of the bottom end of the underground irrigation cylinder is provided with the sealing rubber ring two, the bottom end of the underground irrigation cylinder is provided with the insertion cone sleeve, the outer diameter of the bottom of the insertion cone sleeve is smaller than that of the top, a plurality of water outlet through holes are vertically and equidistantly arranged on the front and rear sides of the underground irrigation cylinder, the top of the underground irrigation cylinder is connected with the underground irrigation depth control assembly, and the underground irrigation cylinder is provided with the soil invasion prevention blocking assembly. The water in the irrigation vertical pipe enters the underground irrigation cylinder through the side through groove, the water and fertilizer in the underground irrigation cylinder enter the soil below the ground through the water outlet through hole, the direct supplement and application of the water and fertilizer in the soil are realized, the sealing rubber ring one and the sealing rubber ring two prevent the water and fertilizer from leaking at the connection between the underground irrigation cylinder and the irrigation vertical pipe, the soil invasion prevention blocking assembly can prevent the soil from entering the underground irrigation cylinder through the water outlet through hole and finally blocking the side through groove, and the underground irrigation depth control assembly is used for adjusting the height of the underground irrigation cylinder relative to the irrigation vertical pipe. After the height of the underground irrigation cylinder is changed, the height of the water outlet through hole is also changed, so that the height of the irrigation water and fertilizer in the soil is changed. When the underground irrigation depth control assembly adjusts the height of the underground irrigation cylinder relative to the irrigation vertical pipe, it is necessary to ensure that the side through groove is always in the underground irrigation cylinder, so that the height of the water and fertilizer discharged into the soil is adapted to the plant roots, and the setting of the insertion cone sleeve is beneficial to the insertion of the underground irrigation cylinder into the soil layer with the irrigation vertical pipe.

[0013] Furthermore, the soil intrusion prevention and blocking component includes a water outlet groove and a soil retaining plate. A water outlet groove is formed on the outer side of the underground irrigation cylinder corresponding to the water outlet hole, and a soil retaining plate is installed at the bottom of the water outlet groove. The water outlet groove is used to install the soil retaining plate to prevent soil from completely blocking the water outlet hole when the irrigation riser and underground irrigation cylinder are inserted into the soil layer. The water and fertilizer discharged from the water outlet hole will make the surrounding soil viscous and flowable; the soil retaining plate prevents the flowing viscous soil from entering the water outlet hole and the underground irrigation cylinder.

[0014] Furthermore, the underground irrigation depth control component includes a locking sleeve and a locking bolt. The top of the underground irrigation cylinder is fixedly connected to the bottom of the locking sleeve, and the locking bolt is threadedly connected to the side of the locking sleeve. The locking bolt abuts against the outside of the underground irrigation cylinder. Loosening the locking bolt allows the locking sleeve and the underground irrigation cylinder to move up and down along the irrigation riser. After the water outlet is at a suitable height, the locking bolt is retightened to relock the relative height of the underground irrigation cylinder and the irrigation riser.

[0015] Furthermore, it also includes a water pressure balancing mechanism, which includes a base, a balancing guide rod, a balancing guide ring, and a balancing spring. The bottom of the balancing guide rod is fixedly connected to the base, and the balancing guide ring is slidably connected to the middle of the balancing guide rod. The balancing guide ring is fixedly connected to the side of the water and fertilizer tank assembly, and the balancing spring is sleeved on the balancing guide rod below the balancing guide ring. The water pressure balancing mechanism supports the water and fertilizer tank assembly to a certain height, allowing the water and fertilizer to be used for drip irrigation or general irrigation under their own weight. The water and fertilizer tank assembly holds water and fertilizer. When there is a lot of water and fertilizer, the liquid level in the water and fertilizer tank assembly is high, and the water pressure in the downstream pipeline and interface is high when irrigating by natural gravity, which can easily speed up the drip irrigation. When the amount of water and fertilizer decreases, the liquid level of water and fertilizer decreases, and the water pressure in the downstream pipeline and interface decreases, which can easily slow down the drip irrigation. Therefore, a balancing guide rod and a balancing guide ring are set up to allow the water and fertilizer tank assembly to move up and down along the balancing guide rod. When there is a lot of water and fertilizer in the water and fertilizer tank assembly, the balancing spring is compressed, and the water and fertilizer tank assembly descends along the balancing guide rod, appropriately reducing the water pressure in the downstream pipeline and interface. When the amount of water and fertilizer in the water and fertilizer tank assembly decreases, the balancing spring rebounds, and the water and fertilizer tank assembly rises along the balancing guide rod, appropriately increasing the water pressure in the downstream pipeline and interface, which helps to maintain the subsequent drip irrigation speed.

[0016] Compared with existing technologies, the advantages of this automated drip irrigation system for greenhouse water and fertilizer are: 1. This greenhouse automated drip irrigation system uses a water and fertilizer tank assembly to hold and supply water and fertilizer. The water and fertilizer in the water and fertilizer tank assembly enter the centralized pipeline due to gravity. The centralized pipeline is laid along the edge of the greenhouse. The water and fertilizer in the centralized pipeline enter the drip irrigation branch pipe through the port and hose connection assembly, and then are discharged through the drip irrigation pipe outlet. The drip irrigation position control mechanism can adjust the drip irrigation position according to the row spacing of the plants, so that the water and fertilizer can be directly applied to the position close to the roots of the plants.

[0017] 2. This greenhouse automated drip irrigation system uses a drip switching control mechanism to move the drip irrigation branch pipes and drip irrigation inlets up and down relative to the ground drip irrigation mechanism. Through the cooperation between the ground drip irrigation mechanism and the drip irrigation inlets, the speed at which water and fertilizer are discharged from the drip irrigation inlets can be controlled. The ground drip irrigation mechanism can also completely seal the drip irrigation inlets to stop drip irrigation. When the ground drip irrigation mechanism completely seals the drip irrigation inlets, the underground water and fertilizer irrigation control mechanism will be opened, which can deliver water and fertilizer into the soil below the ground. This allows for irrigation of water and fertilizer underground, with water and fertilizer directly entering the soil, reducing volatilization on the ground surface. This is suitable for the application of easily volatile water and fertilizer.

[0018] 3. This automated drip irrigation system for greenhouses can deliver water and fertilizer directly to the roots of crops via drip irrigation. The water and fertilizer seep downwards from the ground, ensuring that even the upper parts of the crop roots can absorb nutrients, resulting in sufficient irrigation. During drip irrigation, the drip rate can be controlled by adjusting the depth of the clearing and speed control cone inserted into the drip irrigation outlet control ring. The clearing and speed control cone can also be fully inserted into the drip irrigation outlet control ring to periodically clean up crystals and other blockages inside the ring. In addition to surface drip irrigation, water and fertilizer can also be delivered directly below ground level to prevent evaporation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the automated drip irrigation system for greenhouse water and fertilizer of the present invention; Figure 2 This is a partial rear structure diagram of the automated drip irrigation system for greenhouses of the present invention; Figure 3 For the present invention Figure 2 A magnified view of the structure at point A in the middle; Figure 4 For the present invention Figure 2 A magnified schematic diagram of the structure at point B in the middle; Figure 5 For the present invention Figure 2 Longitudinal cross-sectional structural diagram; Figure 6 For the present invention Figure 5 A magnified schematic diagram of the structure at point C in the middle; Figure 7 This is a partial cross-sectional schematic diagram of the underground irrigation control mechanism for water and fertilizer in the automated drip irrigation system for greenhouses of the present invention. Figure 8 This is a cross-sectional schematic diagram of the underground irrigation mechanism for water and fertilizer in the automated drip irrigation system for greenhouses of the present invention. Figure 9 For the present invention Figure 8 A magnified schematic diagram of the structure at point D in the middle; Figure 10 This is a schematic diagram of the water and fertilizer supply mechanism and the water pressure balancing mechanism in the automated drip irrigation system for greenhouses of the present invention. In the diagram: 1. Water and fertilizer supply mechanism; 11. Water and fertilizer tank; 12. Tank cover; 13. Water inlet; 14. Water and fertilizer inlet; 15. Flow meter; 16. Agitator; 17. Discharge pipe; 18. Discharge hose; 19. Centralized laying pipeline; 110. Port; 2. Drip irrigation branch mechanism; 21. Solenoid valve; 22. Connector; 23. Branch hose; 24. Drip irrigation branch pipe; 25. Drip irrigation pipe inlet; 3. Surface drip irrigation mechanism; 31. Irrigation riser; 32. Drip irrigation outlet control ring; 33. Unblocking and speed control cone sleeve; 34. Sealing base plate; 35. Drain hole; 36. Guide pipe; 37. Sealing ring groove; 38. Drain seal plug; 39. Sealing water-blocking ring; 310. Pointed end; 4. Water and fertilizer underground irrigation control mechanism; 41. Inner sleeve; 42. Hexagonal control sleeve; 43. Control plug; 44. Rubber sleeve; 45. Tray; 46. Compression spring; 47. Slip ring; 48. Control column; 49. Ring frame. 410 Assembly port, 411 Sealing cap, 412 Valve opening pin, 5 Drip irrigation position control mechanism, 51 Movable seat, 52 Movable shaft, 53 Movable block, 54 Drip irrigation movable trough, 55 Guide rail, 56 Drip irrigation extension trough, 57 Guide strip, 58 Fastening bolt, 6 Water and fertilizer underground irrigation mechanism, 61 Side passage groove, 62 Underground irrigation cylinder, 63 Water outlet groove, 64 Water outlet through hole, 65 Retaining plate, 66 Secondary retaining sleeve, 67 Overflow passage groove, 68 Sealing ring one, 69 Sealing ring two, 610 Insertion cone sleeve, 611 Locking sleeve, 612 Locking bolt, 7 Drip irrigation switching control mechanism, 71 Mounting bracket, 72 Fixing sleeve, 73 Anchor hole, 74 Electric telescopic rod, 75 Column, 76 Column sleeve, 8 Water pressure balancing mechanism, 81 Base, 82 Balancing guide rod, 83 Balancing guide ring, 84 Balancing spring. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1, please refer to Figures 1 to 10This embodiment provides a technical solution: an automated drip irrigation system for greenhouse water and fertilizer, including a water and fertilizer supply mechanism 1. The water and fertilizer supply mechanism 1 includes a water and fertilizer tank assembly, a centralized laying pipe 19, and ports 110. The water and fertilizer tank assembly is connected to one end of the centralized laying pipe 19, and ports 110 are provided at equal intervals on the side of the centralized laying pipe 19.

[0022] The water and fertilizer tank assembly includes a water and fertilizer tank 11, a tank cover 12, a water inlet 13, a water and fertilizer inlet 14, a flow meter 15, a discharge pipe 17, and a discharge hose 18. The tank cover 12 is installed on the top of the water and fertilizer tank 11. The water inlet 13 and water and fertilizer inlet 14 are respectively installed on the tank cover 12. Water or fertilizer can be added to the water and fertilizer tank 11 through the water inlet 13 and water and fertilizer inlet 14. The addition of water or fertilizer generally requires an external liquid pump. The water inlet 13 and water and fertilizer inlet 14... Each tank is equipped with a flow meter 15, which can measure the amount of liquid added to the water and fertilizer tank 11. The bottom of the water and fertilizer tank 11 is provided with a discharge pipe 17, which is connected to the end of the centralized laying pipe 19 through a discharge hose 18. Since the discharge pipe 17 and the centralized laying pipe 19 are connected through the discharge hose 18, the position or height of the water and fertilizer tank 11 can be changed as needed. By raising the height of the water and fertilizer tank 11, the water and fertilizer can flow into the centralized laying pipe 19 for irrigation by their own weight.

[0023] The water and fertilizer supply mechanism 1 also includes a stirrer 16. The stirrer 16 is located in the middle of the tank cover 12. The stirring rod at the bottom of the stirrer 16 can stir the water and fertilizer in the water and fertilizer tank 11 to promote the uniform distribution of effective components in the water and fertilizer.

[0024] It is also equipped with a drip irrigation branch system 2, a surface drip irrigation system 3, a water and fertilizer underground irrigation control system 4, a drip irrigation position control system 5, and a drip irrigation switching control system 7.

[0025] The drip irrigation branch mechanism 2 includes a hose connection assembly, a drip irrigation branch pipe 24 and a drip irrigation port 25. Each port 110 is connected to one end of the drip irrigation branch pipe 24 through the hose connection assembly. Each drip irrigation branch pipe 24 has a drip irrigation port 25 at equal intervals at its bottom.

[0026] The hose connection assembly includes a solenoid valve 21, a connector 22, and a branch hose 23. The end of the port 110 is connected to one end of the connector 22 via the solenoid valve 21, and the other end of the connector 22 is connected to one end of the drip irrigation branch pipe 24 via the branch hose 23. The other end of the drip irrigation branch pipe 24 is closed. The solenoid valve 21 can control the port 110 to deliver water and fertilizer into the branch hose 23 and the drip irrigation branch pipe 24. The branch hose 23 allows the drip irrigation branch pipe 24 to move freely relative to the centrally laid pipeline 19.

[0027] The top of the ground drip irrigation mechanism 3 is installed inside the drip irrigation pipe inlet 25, and the ground drip irrigation mechanism 3 is connected to the drip irrigation branch pipe 24 through the drip irrigation switching control mechanism 7.

[0028] The ground drip irrigation mechanism 3 includes an irrigation riser 31, a drip irrigation water outlet control ring 32, a clearing and speed control cone sleeve 33, and a tip 310. The irrigation riser 31 is inserted into the drip irrigation pipe opening 25. The drip irrigation water outlet control ring 32 is fixedly connected to the inner side of the drip irrigation pipe opening 25. The inner diameter of the drip irrigation water outlet control ring 32 is larger than the outer diameter of the irrigation riser 31. The clearing and speed control cone sleeve 33 is fixedly sleeved on the outer side of the top of the irrigation riser 31. The bottom outer diameter of the clearing and speed control cone sleeve 33 is smaller than the top outer diameter. The bottom end of the irrigation riser 31 is provided with a tip 310. The pointed tip 310 facilitates the insertion of the irrigation riser 31 into the soil. When the drip irrigation switching control mechanism 7 moves the drip irrigation branch pipe 24 and the drip irrigation inlet 25 upward relative to the irrigation riser 31, the bottom of the clearing and speed-controlling cone sleeve 33 gradually extends into the drip irrigation outlet control ring 32, and the annular gap between the clearing and speed-controlling cone sleeve 33 and the drip irrigation outlet control ring 32 gradually decreases. At this time, the drip irrigation speed gradually slows down. If the drip irrigation switching control mechanism 7 continues to move the drip irrigation branch pipe 24 and the drip irrigation inlet 25 upward relative to the irrigation riser 31, it will move the drip irrigation outlet control ring 32 upward until the clearing and speed-controlling cone sleeve 33 can no longer extend into the drip irrigation... Inside the water outlet control ring 32, the clearing and speed control cone sleeve 33 can clean the crystals and other blockages on the inner wall of the drip irrigation water outlet control ring 32, preventing the accumulation of crystals and other blockages on the inner side of the drip irrigation water outlet control ring 32 after a long period of drip irrigation, which would affect drip irrigation. If the drip irrigation switching control mechanism 7 drives the drip irrigation branch pipe 24 and the drip irrigation pipe outlet 25 to move downward relative to the irrigation riser pipe 31, and drives the drip irrigation water outlet control ring 32 to move downward, the bottom of the clearing and speed control cone sleeve 33 will gradually move away from the drip irrigation water outlet control ring 32, and the annular gap between the clearing and speed control cone sleeve 33 and the drip irrigation water outlet control ring 32 will gradually increase, and the drip irrigation speed of water and fertilizer will gradually increase.

[0029] The ground drip irrigation mechanism 3 also includes a bottom sealing plate 34, a drain hole 35, a conduit 36, a sealing ring groove 37, a drain seal plug 38, and a sealing water-blocking ring 39. A sealing ring groove 37 is provided on the bottom edge of the drip irrigation pipe opening 25. The bottom sealing plate 34 is fixedly sleeved on the outside of the irrigation riser 31 below the drip irrigation pipe opening 25. A sealing water-blocking ring 39 corresponding to the sealing ring groove 37 is provided on the upper edge of the bottom sealing plate 34. Two drain holes 35 are respectively provided on the front and rear sides of the irrigation riser 31. The bottom of the two drain holes 35 are respectively connected to the top of the two conduits 36. Two drain seal plugs 38 are fixedly connected to the bottom of the drip irrigation pipe opening 25 corresponding to the positions of the two drain holes 35. Water and fertilizer are discharged from the annular gap between the clearing and speed-controlling cone sleeve 33 and the drip irrigation outlet control ring 32, falling onto the area inside the sealing water-blocking ring 39 on the bottom plate 34. The sealing water-blocking ring 39 then acts as a "dam." Water and fertilizer enter the guide pipe 36 through the drain hole 35, then exit through the bottom of the guide pipe 36 and fall onto the drip irrigation position control mechanism 5. The drip irrigation position control mechanism 5 guides the water and fertilizer to the area near the plant roots. Because each irrigation riser 31 has two sets of drain holes 35 and guide pipes 36, one... The drip irrigation branch pipe 24 can be responsible for the drip irrigation of two rows of plants. When drip irrigation is not required by the annular gap, drain hole 35 and conduit 36, the drip irrigation switching control mechanism 7 drives the drip irrigation branch pipe 24 and the drip irrigation pipe opening 25 to move continuously downward relative to the irrigation riser pipe 31 until the top of the sealing plate 34 contacts the bottom of the drip irrigation pipe opening 25. At this time, the drain seal plug 38 blocks the corresponding drain hole 35, and the sealing water-blocking ring 39 is in the sealing ring groove 37. Water and fertilizer can no longer be discharged from the bottom of the drip irrigation pipe opening 25, so that the drip irrigation work at this point stops.

[0030] The drip irrigation switching control mechanism 7 includes a mounting frame 71, anchor holes 73, an electric telescopic rod 74, and a vertical movement guide assembly. Each drip irrigation branch pipe 24 is provided with a mounting frame 71 below it. Anchor holes 73 are opened at equal intervals on the front and rear sides of the mounting frame 71. The middle part of the mounting frame 71 is fixedly connected to the corresponding irrigation riser pipe 31. The mounting frame 71 is connected to the drip irrigation branch pipe 24 through the vertical movement guide assembly. A vertical electric telescopic rod 74 is installed on the mounting frame 71. The top end of the electric telescopic rod 74 is fixedly connected to the bottom of the drip irrigation branch pipe 24.

[0031] The drip irrigation switching control mechanism 7 also includes a fixing sleeve 72. The fixing sleeve 72 is fixedly connected to the irrigation riser pipe 31. The fixing sleeve 72 is fixedly connected to the mounting frame 71. The irrigation riser pipe 31 is fixedly installed on the mounting frame 71 by means of the fixing sleeve 72.

[0032] The vertical guide assembly includes columns 75 and column sleeves 76. The bottom ends of four columns 75 are fixedly connected to the mounting frame 71. Each column 75 is slidably connected to a column sleeve 76. The column sleeve 76 is fixedly connected to the side of the drip irrigation branch pipe 24. The column 75 and column sleeve 76 slide together, allowing the drip irrigation branch pipe 24 to move up and down only relative to the mounting frame 71 and the irrigation riser pipe 31.

[0033] Anchor rods are inserted into the anchor holes 73. With the help of the anchor rods, the mounting frame 71 can be stably fixed to the ground, thereby vertically and stably fixing the irrigation riser pipe 31. The vertical movement guide component allows the drip irrigation branch pipe 24 to move stably up and down only relative to the mounting frame 71 and the irrigation riser pipe 31. The extension and retraction of the electric telescopic rod 74 can drive the drip irrigation branch pipe 24 to move up and down relative to the irrigation riser pipe 31.

[0034] The underground irrigation control mechanism 4 is installed on the ground drip irrigation mechanism 3.

[0035] The underground irrigation control mechanism 4 includes an inner sleeve 41, a control plug 43, a compression spring 46, a slip ring 47, a control column 48, a ring frame 49, an assembly port 410, a sealing cap 411, and a valve opening pin 412. The inner sleeve 41 is threadedly connected to the top inner side of the irrigation riser 31. A slip ring 47 is installed inside the irrigation riser 31 at a position below the center of the inner sleeve 41, and the slip ring 47 is fixed to the center position inside the irrigation riser 31 by the ring frame 49. A vertical control column 48 is slidably connected inside the slip ring 47. The top of the control column 48 is fixedly connected to the bottom center of the control plug 43. A compression spring 46 is sleeved on the control column 48 at a position above the slip ring 47. An assembly port 410 is provided at the top of the drip irrigation branch pipe 24 corresponding to the position of the drip irrigation pipe opening 25. A sealing cap 411 is threadedly connected to the assembly port 410. The bottom of the sealing cap 411 is fixedly connected to the top of the valve opening pin 412 at a position corresponding to the center of the inner sleeve 41. The assembly port 410 facilitates the smooth installation of the irrigation riser 31 into the inside of the drip irrigation pipe inlet 25. The sealing cap 411 is used to seal the assembly port 410 and also facilitates the installation of the valve opening pin 412.

[0036] The underground irrigation control mechanism 4 also includes a hexagonal control sleeve 42, a rubber sleeve 44, and a tray 45. The hexagonal control sleeve 42 is fixedly sleeved on the outer periphery of the top of the inner sleeve 41. The hexagonal control sleeve 42 facilitates the rotation of the inner sleeve 41, thereby facilitating the threaded installation of the inner sleeve 41 on the inner top of the irrigation riser pipe 31. In order to seal the conical opening at the bottom of the inner sleeve 41 tightly with the control plug 43, a rubber sleeve 44 is sleeved on the outside of the control plug 43. The elasticity of the rubber sleeve 44 achieves the sealing of the gap. The control column 48 is fixedly sleeved on the lower side of the rubber sleeve 44 with the tray 45. The tray 45 supports the lower side of the rubber sleeve 44 and at the same time, the tray 45 is used to abut the top of the compression spring 46.

[0037] The elastic force of the compression spring 46 pushes the control plug 43 and control column 48 to move upward along the slip ring 47. The top of the control plug 43 closes the conical opening at the bottom of the inner sleeve 41. At this time, the water and fertilizer in the drip irrigation branch pipe 24 cannot enter the irrigation riser pipe 31. When the drip irrigation switching control mechanism 7 drives the drip irrigation branch pipe 24 and the drip irrigation inlet 25 to move downward relative to the irrigation riser pipe 31 until the top of the sealing plate 34 contacts the bottom of the drip irrigation inlet 25, water and fertilizer can no longer be discharged from the bottom of the drip irrigation inlet 25, and the drip irrigation work stops. At this time, the valve opening pin 412 moves down until the bottom of the valve opening pin 412 pushes the control plug 43 downward. At this time, the compression spring 46 is compressed, and the control plug 43 and the control column 48 slide downward along the slip ring 47. The top of the control plug 43 leaves the conical opening at the bottom of the inner sleeve 41, and the water and fertilizer in the drip irrigation branch pipe 24 enter the irrigation riser pipe 31. The water and fertilizer in the irrigation riser pipe 31 directly seep into the soil below the ground through the water and fertilizer underground irrigation mechanism 6, so that the water and fertilizer do not stay above the ground and reduce the loss of volatile water and fertilizer through volatilization. Thus, the drip irrigation switching control mechanism 7, together with the water and fertilizer underground irrigation control mechanism 4, realizes the function of switching from surface drip irrigation to direct irrigation into the soil below the ground.

[0038] The drip irrigation position control mechanism 5 is installed on the side of the ground drip irrigation mechanism 3.

[0039] The drip irrigation position control mechanism 5 includes a drip irrigation movable trough 54, guide rails 55, a drip irrigation extension trough 56, guide bars 57, and fastening bolts 58. One end of the drip irrigation movable trough 54 is movably connected to the outside of the irrigation riser 31, located below the guide pipe 36. Two guide rails 55 are respectively provided on both sides of the drip irrigation movable trough 54. The drip irrigation extension trough 56 is located below the drip irrigation movable trough 54. Two guide bars 57 are respectively provided on both sides of the drip irrigation extension trough 56. The two guide bars 57 are slidably connected to the two guide rails 55. A fastening bolt 58 is threadedly connected to the side of each guide rail 55 away from the irrigation riser 31. The fastening bolt 58 abuts against the side of the corresponding guide bar 57.

[0040] Specifically, the drip irrigation position control mechanism 5 also includes a movable seat 51, a movable shaft 52, and a movable block 53. The movable seat 51 is fixedly connected to the outside of the irrigation riser 31 at a position below the guide tube 36. The movable seat 51 is movably connected to the movable block 53 through the movable shaft 52. The movable block 53 is fixedly connected to the end of the drip irrigation movable trough 54. The movable seat 51, the movable shaft 52, and the movable block 53 are used to realize the movable connection between the irrigation riser 31 and the drip irrigation movable trough 54.

[0041] Water and fertilizer dripping from the conduit 36 ​​falls onto the drip irrigation movable trough 54, then into the drip irrigation extension trough 56, and finally reaches the ground near the plant roots. Loosening the fastening bolt 58 allows the drip irrigation movable trough 54 to move relative to the irrigation riser 31, changing the angle between the drip irrigation movable trough 54 and the ground. The guide bar 57 and guide rail 55 work together to allow the drip irrigation extension trough 56 to slide relative to the drip irrigation movable trough 54, thereby changing the length of the drip irrigation trough composed of the drip irrigation movable trough 54 and the drip irrigation extension trough 56. After adjustment, tightening the fastening bolt 58 locks the drip irrigation movable trough 54 and the drip irrigation extension trough 56 in place. This ensures that the bottom of the drip irrigation extension trough 56 is just close to the plant roots, allowing the dripping distance to be adjusted, the dripping position to be more accurate, and the utilization of water and fertilizer to be more efficient.

[0042] In use, the water and fertilizer tank assembly is used to hold and supply water and fertilizer. The water and fertilizer in the water and fertilizer tank assembly enter the centralized laying pipe 19 due to gravity. The centralized laying pipe 19 is laid along the edge of the greenhouse. The water and fertilizer in the centralized laying pipe 19 enter the drip irrigation branch pipe 24 through port 110 and the hose connection assembly, and then exit through the drip irrigation nozzle 25. The drip irrigation position control mechanism 5 can adjust the drip irrigation position according to the row spacing of the plants, facilitating direct application of water and fertilizer to the area close to the plant roots. The drip irrigation switching control mechanism 7 is used to drive the drip irrigation branch pipe 24 and the drip irrigation nozzle 25. 5. The ground drip irrigation mechanism 3 moves up and down relative to the ground drip irrigation mechanism 3. The speed at which water and fertilizer are discharged from the drip irrigation pipe 25 can be controlled by the cooperation between the ground drip irrigation mechanism 3 and the drip irrigation pipe 25. The ground drip irrigation mechanism 3 can also completely close the drip irrigation pipe 25 to stop drip irrigation. When the ground drip irrigation mechanism 3 completely closes the drip irrigation pipe 25, the underground water and fertilizer irrigation control mechanism 4 will be opened, which can deliver water and fertilizer to the soil below the ground. This realizes irrigation of water and fertilizer below the ground, and the water and fertilizer directly enter the soil, reducing volatilization on the ground. This is suitable for the application of easily volatilized water and fertilizer.

[0043] Example 2, please refer to Figures 1 to 10 This embodiment provides a technical solution: an automated drip irrigation system for greenhouse water and fertilizer. This embodiment is structurally similar to Embodiment 1, with the difference being: It also includes a water and fertilizer underground irrigation mechanism 6, which includes a side passage 61, an underground irrigation cylinder 62, a water outlet 64, a first sealing ring 68, a second sealing ring 69, an insertion cone sleeve 610, a soil intrusion prevention and blocking component, and an underground irrigation depth control component. The bottom of the irrigation riser 31 is slidably sleeved with the underground irrigation cylinder 62. The portion of the irrigation riser 31 located inside the underground irrigation cylinder 62 has a side passage 61. A first sealing ring 68 is installed in the annular groove on the inner side of the top of the underground irrigation cylinder 62. A sealing ring 69 is provided in the annular groove on the inner side of the bottom end. An insertion cone sleeve 610 is provided at the bottom end of the underground irrigation cylinder 62. The outer diameter of the bottom of the insertion cone sleeve 610 is smaller than the outer diameter of the top. Multiple water outlet holes 64 are vertically and equally spaced on the middle of the front and rear sides of the underground irrigation cylinder 62. Specifically, three water outlet holes 64 are generally vertically and equally spaced on each side of the underground irrigation cylinder 62. An underground irrigation depth control component is connected to the top of the underground irrigation cylinder 62. An anti-soil intrusion and blockage component is installed on the underground irrigation cylinder 62. Water from the irrigation riser 31 enters the underground irrigation cylinder 62 through the side channel 61. The water and fertilizer in the underground irrigation cylinder 62 enter the soil below ground level through the water outlet 64, achieving direct replenishment of water and fertilizer in the soil. Sealing ring 1 68 and sealing ring 2 69 prevent water and fertilizer leakage at the connection between the underground irrigation cylinder 62 and the irrigation riser 31. The soil intrusion and blockage prevention component prevents soil from entering the underground irrigation cylinder 62 through the water outlet 64 and eventually blocking the side channel 61. The underground irrigation depth control component is used to adjust the height of the underground irrigation cylinder 62 relative to the irrigation riser 31. Changing the height of the underground irrigation cylinder 62 will also change the height of the water outlet 64, thereby changing the height of water and fertilizer in the soil. When adjusting the height of the underground irrigation cylinder 62 relative to the irrigation riser 31, the underground irrigation depth control component needs to ensure that the side channel 61 is always located inside the underground irrigation cylinder 62, so that the height of water and fertilizer discharged into the soil is adapted to the plant roots. The setting of the insertion cone sleeve 610 facilitates the insertion of the underground irrigation cylinder 62 into the soil layer along with the irrigation riser 31.

[0044] The soil intrusion prevention and blocking component includes a water outlet groove 63, a soil retaining plate 65, a secondary soil retaining sleeve 66, and an overflow channel 67. The water outlet groove 63 is provided on the outer side of the underground irrigation cylinder 62 at the position corresponding to the water outlet hole 64. The soil retaining plate 65 is provided at the bottom of the water outlet groove 63. The secondary soil retaining sleeve 66 is provided inside the underground irrigation cylinder 62. The upper and lower ends of the secondary soil retaining sleeve 66 are respectively connected to the upper and lower ends of the underground irrigation cylinder 62. A soil retaining annular cavity is formed between the secondary soil retaining sleeve 66 and the underground irrigation cylinder 62. Two overflow channels 67 are provided on the top two sides of the secondary soil retaining sleeve 66. The water outlet groove 63 is used to install the soil retaining plate 65 to prevent the soil from completely blocking the water outlet hole 64 when the irrigation riser pipe 31 and the underground irrigation cylinder 62 are inserted into the soil layer. The water and fertilizer discharged from the water outlet hole 64 will make the surrounding soil sticky and flowable. The soil retaining plate 65 prevents the flowing sticky soil from entering the water outlet hole 64 and the underground irrigation cylinder 62. Even if soil enters the underground irrigation cylinder 62 through the water outlet hole 64, it will first fall into the bottom between the secondary soil retaining sleeve 66 and the underground irrigation cylinder 62, which is not easy to block the overflow channel 67, and even less likely to block the side channel 61, which is conducive to the long-term effective maintenance of the underground irrigation function.

[0045] The underground irrigation depth control assembly includes a locking sleeve 611 and a locking bolt 612. The top of the underground irrigation cylinder 62 is fixedly connected to the bottom of the locking sleeve 611, and the locking bolt 612 is threadedly connected to the side of the locking sleeve 611. The locking bolt 612 abuts against the outside of the underground irrigation cylinder 62. Loosening the locking bolt 612 allows the locking sleeve 611 and the underground irrigation cylinder 62 to move up and down along the irrigation riser 31. After the water outlet 64 is at a suitable height, the locking bolt 612 is retightened to relock the relative height of the underground irrigation cylinder 62 and the irrigation riser 31.

[0046] Example 3, please refer to Figures 1 to 10 This embodiment provides a technical solution: an automated drip irrigation system for greenhouse water and fertilizer. This embodiment is structurally similar to Embodiment 2, with the difference being: It also includes a water pressure balancing mechanism 8, which includes a base 81, a balancing guide rod 82, a balancing guide ring 83, and a balancing spring 84. The bottom of the balancing guide rod 82 is fixedly connected to the base 81, and the balancing guide ring 83 is slidably connected to the middle of the balancing guide rod 82. The balancing guide ring 83 is fixedly connected to the side of the water and fertilizer tank assembly, and the balancing spring 84 is sleeved on the balancing guide rod 82 below the balancing guide ring 83.

[0047] Specifically, the water and fertilizer tank 11 in the water and fertilizer tank assembly has four equalizing guide rings 83 fixedly connected to its four corners, and each equalizing guide ring 83 has an equalizing guide rod 82 vertically slidably connected inside it. The bottoms of the four equalizing guide rods 82 are fixedly connected to the four corners of the base 81.

[0048] The water pressure balancing mechanism 8 supports the water and fertilizer tank assembly to a certain height, allowing the water and fertilizer to be used for drip irrigation or general irrigation under their own weight. The water and fertilizer tank assembly is used to hold water and fertilizer. When there is a lot of water and fertilizer, the liquid level in the water and fertilizer tank assembly is high. When irrigating by natural gravity, the water pressure in the downstream pipeline and interface is relatively high, which can easily speed up the drip irrigation. When the amount of water and fertilizer decreases, the liquid level of water and fertilizer decreases, and the water pressure in the downstream pipeline and interface decreases. At this time, the drip irrigation speed is likely to decrease. Therefore, a balancing guide rod 82 and a balancing guide ring 83 are set to allow the water and fertilizer tank assembly to move up and down along the balancing guide rod 82. When there is a lot of water and fertilizer in the water and fertilizer tank assembly, the balancing spring 84 is compressed, and the water and fertilizer tank assembly descends along the balancing guide rod 82, appropriately reducing the water pressure in the downstream pipeline and interface. When the amount of water and fertilizer in the water and fertilizer tank assembly decreases, the balancing spring 84 rebounds, and the water and fertilizer tank assembly rises along the balancing guide rod 82, appropriately increasing the water pressure in the downstream pipeline and interface, which helps to maintain the subsequent drip irrigation speed.

[0049] It is worth noting that in order to achieve the automation of drip irrigation, an additional PLC controller is required. The solenoid valve 21, electric telescopic rod 74, and agitator 16 are all controlled by the PLC controller. The control method adopts existing technology. The PLC controller periodically controls the solenoid valve 21 to open, and water and fertilizer are discharged through the annular gap between the clearing speed control cone sleeve 33 and the drip irrigation water outlet control ring 32. Drip irrigation can be carried out on the ground to the roots of plants. In order to prevent the volatilization of effective components in water and fertilizer, when irrigation is needed below ground, the PLC controller controls the electric telescopic rod 74 in the drip irrigation switching control mechanism 7 to shorten. The top of the sealing plate 34 contacts the bottom of the drip irrigation pipe opening 25, and water and fertilizer can no longer be discharged from the bottom of the drip irrigation pipe opening 25. At this point, the drip irrigation work stops, and the water and fertilizer in the drip irrigation branch pipe 24 enters the irrigation riser pipe 31. The water and fertilizer in the irrigation riser pipe 31 directly seeps into the soil below ground through the water and fertilizer underground irrigation mechanism 6.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automated drip irrigation system for greenhouses, comprising a water and fertilizer supply mechanism (1), the water and fertilizer supply mechanism (1) including a water and fertilizer tank assembly, a centralized laying pipe (19), and ports (110), wherein the water and fertilizer tank assembly is connected to one end of the centralized laying pipe (19), and ports (110) are provided at equal intervals on the side of the centralized laying pipe (19), characterized in that, Also includes: The drip irrigation branch mechanism (2) includes a hose connection assembly, a drip irrigation branch pipe (24) and a drip irrigation port (25). Each port (110) is connected to one end of the drip irrigation branch pipe (24) through the hose connection assembly. Each drip irrigation branch pipe (24) has a drip irrigation port (25) at equal intervals at its bottom. The ground drip irrigation mechanism (3) is installed at the top inside the drip irrigation pipe opening (25), and the ground drip irrigation mechanism (3) is connected to the drip irrigation branch pipe (24) through the drip irrigation switching control mechanism (7). The underground irrigation control mechanism (4) is installed on the ground drip irrigation mechanism (3); The drip irrigation position control mechanism (5) is installed on the side of the ground drip irrigation mechanism (3).

2. The automated drip irrigation system for greenhouse water and fertilizer as described in claim 1, characterized in that: The ground drip irrigation mechanism (3) includes an irrigation riser (31), and the irrigation riser (31) is inserted into the drip irrigation pipe opening (25). A drip irrigation water outlet control ring (32) is fixedly connected to the inner side of the drip irrigation pipe opening (25). The inner diameter of the drip irrigation water outlet control ring (32) is larger than the outer diameter of the irrigation riser (31). A blockage control cone sleeve (33) is fixedly sleeved on the outer side of the top of the irrigation riser (31). The bottom outer diameter of the blockage control cone sleeve (33) is smaller than the top outer diameter. A pointed tip (310) is provided at the bottom end of the irrigation riser (31).

3. The automated drip irrigation system for greenhouse water and fertilizer as described in claim 2, characterized in that: The ground drip irrigation mechanism (3) also includes a bottom sealing plate (34), a drain hole (35), a guide pipe (36), a sealing ring groove (37), a drain seal plug (38), and a sealing water-blocking ring (39). The bottom edge of the drip irrigation pipe opening (25) is provided with a sealing ring groove (37). The bottom sealing plate (34) is fixedly sleeved on the outside of the irrigation riser (31) below the drip irrigation pipe opening (25). The upper edge of the bottom sealing plate (34) is provided with a sealing water-blocking ring (39) that corresponds to and cooperates with the sealing ring groove (37). The bottom sealing plate (34) is provided with two drain holes (35) at the front and rear sides of the irrigation riser (31). The bottom of the two drain holes (35) is connected to the top of the two guide pipes (36) respectively. The bottom of the drip irrigation pipe opening (25) is fixedly connected with two drain seal plugs (38) at the positions corresponding to the two drain holes (35).

4. The automated drip irrigation system for greenhouse water and fertilizer as described in claim 2, characterized in that: The drip irrigation switching control mechanism (7) includes a mounting frame (71), anchor holes (73), an electric telescopic rod (74), and a vertical movement guide assembly. Each drip irrigation branch pipe (24) is provided with a mounting frame (71) below it. Anchor holes (73) are opened at equal intervals on the front and rear sides of the mounting frame (71). The middle part of the mounting frame (71) is fixedly connected to the corresponding irrigation riser pipe (31). The mounting frame (71) is connected to the drip irrigation branch pipe (24) through the vertical movement guide assembly. A vertical electric telescopic rod (74) is installed on the mounting frame (71). The top of the electric telescopic rod (74) is fixedly connected to the bottom of the drip irrigation branch pipe (24).

5. The automated drip irrigation system for greenhouse water and fertilizer as described in claim 2, characterized in that: The underground irrigation control mechanism (4) includes an inner sleeve (41), a control plug (43), a compression spring (46), a slip ring (47), a control column (48), an assembly port (410), a sealing cap (411), and a valve opening pin (412). The inner sleeve (41) is threadedly connected to the inner side of the top of the irrigation riser (31). A slip ring (47) is installed inside the irrigation riser (31) at a position below the center of the inner sleeve (41). A vertical control column is slidably connected inside the slip ring (47). (48) The top of the control column (48) is fixedly connected to the bottom center of the control plug (43). The control column (48) is fitted with a compression spring (46) on the upper side of the slip ring (47). The top of the drip irrigation branch pipe (24) is provided with an assembly port (410) corresponding to the position of the drip irrigation pipe opening (25). A sealing cap (411) is threaded on the assembly port (410). The bottom of the sealing cap (411) is fixedly connected to the top of the valve opening pin (412) corresponding to the position of the center of the inner sleeve (41).

6. The automated drip irrigation system for greenhouse water and fertilizer according to claim 3, characterized in that: The drip irrigation position control mechanism (5) includes a drip irrigation movable trough (54), a guide rail (55), a drip irrigation extension trough (56), a guide bar (57), and a fastening bolt (58). The drip irrigation movable trough (54) is movably connected to one end of the drip irrigation movable trough (54) at a position below the guide pipe (36) on the outside of the irrigation riser (31). Two guide rails (55) are respectively provided on both sides of the drip irrigation movable trough (54). The drip irrigation extension trough (56) is located on the lower side of the drip irrigation movable trough (54). Two guide bars (57) are respectively provided on both sides of the drip irrigation extension trough (56). The two guide bars (57) are slidably connected to the two guide rails (55). A fastening bolt (58) is threadedly connected to the side of the end of each guide rail (55) away from the irrigation riser (31). The fastening bolt (58) abuts against the side of the corresponding guide bar (57).

7. The automated drip irrigation system for greenhouse water and fertilizer as described in claim 2, characterized in that: It also includes a water and fertilizer underground irrigation mechanism (6), which includes an underground irrigation cylinder (62). The bottom of the irrigation riser (31) is slidably fitted with the underground irrigation cylinder (62). The part of the irrigation riser (31) located inside the underground irrigation cylinder (62) has a side passage groove (61). A sealing ring one (68) is provided in the annular groove on the inner side of the top of the underground irrigation cylinder (62). A sealing ring two (69) is provided in the annular groove on the inner side of the bottom of the underground irrigation cylinder (62). An insertion cone sleeve (610) is provided at the bottom of the underground irrigation cylinder (62). Multiple water outlet holes (64) are vertically and equally spaced in the middle of the front and rear sides of the underground irrigation cylinder (62). An underground irrigation depth control component is connected to the top of the underground irrigation cylinder (62). An anti-soil intrusion and blockage component is installed on the underground irrigation cylinder (62).

8. The automated drip irrigation system for greenhouse water and fertilizer according to claim 7, characterized in that: The soil intrusion prevention and blocking component includes a water outlet groove (63) and a soil retaining plate (65). The water outlet groove (63) is provided on the outside of the underground irrigation cylinder (62) at the position corresponding to the water outlet hole (64), and a soil retaining plate (65) is provided at the bottom of the water outlet groove (63).

9. The automated drip irrigation system for greenhouse water and fertilizer as described in claim 7, characterized in that: The underground irrigation depth control assembly includes a locking sleeve (611) and a locking bolt (612). The top of the underground irrigation cylinder (62) is fixedly connected to the bottom of the locking sleeve (611), and the side of the locking sleeve (611) is threadedly connected to the locking bolt (612). The locking bolt (612) abuts against the outside of the underground irrigation cylinder (62).

10. The automated drip irrigation system for greenhouse water and fertilizer according to claim 1, characterized in that: It also includes a water pressure balancing mechanism (8), which includes a base (81) and a balancing spring (84). The bottom of the balancing guide rod (82) is fixedly connected to the base (81). A balancing guide ring (83) is slidably connected to the middle of the balancing guide rod (82). The balancing guide ring (83) is fixedly connected to the side of the water and fertilizer tank assembly. The balancing guide rod (82) is fitted with a balancing spring (84) at the position below the balancing guide ring (83).

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