Greenhouse intelligent water and fertilizer machine

Abstract

The application provides a greenhouse intelligent water and fertilizer machine, and relates to the technical field of water and fertilizer integrated irrigation, which comprises a control mechanism and an irrigation mechanism, the control mechanism comprises a pipeline support, a plurality of pairs of fertilizer input pipelines and water flow input pipelines are fixedly installed in the pipeline support, the fertilizer input pipelines and the water flow input pipelines are connected through a mixing valve, the mixing valve is a T-shaped connecting valve installed horizontally, a first valve core is horizontally and rotationally installed in a longitudinal pipeline of the mixing valve, and a second valve core is horizontally and rotationally installed in a horizontal pipeline of the mixing valve, the height of fertilizer and water flow irrigation and spraying can be adjusted at will through the irrigation support and the telescopic pipe, the crops can be flushed with water flow when watering, and the growth of the crops is not affected by the dust accumulated on the surface of the crops; the opening at the bottom of the rubber drip irrigation head is clamped by the short rod, so that the soil is prevented from being blocked, the overturning of the rubber drip irrigation head is limited by the atomizing nozzle, the discharge of the fertilizer is controlled, and the practicability of the equipment is improved.

Description

Technical Field

[0001] This invention relates to the field of integrated water and fertilizer irrigation technology, and in particular to an intelligent water and fertilizer machine for greenhouses. Background Technology

[0002] Greenhouses, as an important form of facility agriculture, play a key role in increasing crop yields, improving the quality of agricultural products, and enabling off-season planting.

[0003] The integrated water and fertilizer machine organically combines irrigation and fertilization. Utilizing a pressure system or taking advantage of natural terrain differences, it precisely formulates soluble solid or liquid fertilizers into a fertilizer solution based on soil nutrient content and the crop's nutrient requirements at different growth stages. This solution is then thoroughly mixed with irrigation water and delivered evenly, regularly, and quantitatively to the crop's root development area via a controllable pipeline system using precision irrigation methods such as drip irrigation or micro-sprinkler irrigation. This allows the crop to absorb the necessary nutrients while absorbing water, thus achieving efficient utilization of water and nutrients.

[0004] Existing fertigation machines have difficulty adjusting the irrigation height according to the needs of different crops. At the same time, the irrigation nozzle is too close to the ground and is easily blocked by soil, affecting irrigation efficiency. In addition, fertilizer residue in the pipes after irrigation can easily cause corrosion to the pipes and contaminate the fertilizer solution for the next irrigation.

[0005] Based on this, the present invention provides an intelligent water and fertilizer machine for greenhouses. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides an intelligent water and fertilizer machine for greenhouses, comprising a control mechanism and an irrigation mechanism. The control mechanism includes a pipe support, within which multiple pairs of fertilizer input pipes and water input pipes are fixedly installed. The fertilizer input pipes and water input pipes are connected via a mixing valve, which is a horizontally installed T-shaped connecting valve. A first valve core is horizontally rotatably installed within the longitudinal pipe of the mixing valve, and a second valve core is horizontally rotatably installed within the transverse pipe of the mixing valve. A fertilizer and water output pipe is fixedly connected to the bottom of the mixing valve.

[0007] Furthermore, a waste discharge pipe is fixedly installed at the bottom of the pipe support, and the bottoms of the multiple fertilizer and water output pipes are connected by a transverse pipe. The irrigation mechanism includes an input pipe and an output pipe. The input pipe is fixedly connected to the transverse pipe at the bottom of the fertilizer and water output pipe, and the output pipe is fixedly connected to the waste discharge pipe. Irrigation supports are fixedly installed on both the input pipe and the output pipe.

[0008] Furthermore, the first valve core is a U-shaped valve core, with the opening of the U-shape facing the transverse groove of the mixing valve, and the upper half of the longitudinal pipe of the mixing valve has a larger diameter than the lower half.

[0009] Furthermore, the irrigation supports installed on the input and output pipes are opposite each other. A telescopic tube is fixedly installed at the bottom of the irrigation support, and the telescopic tube is connected to the input and output pipes through a pipe. A drip interface is fixedly installed at the top of the telescopic tube, and an irrigation drip is fixedly installed on the drip interface. The irrigation drip is fixedly installed between the drip interfaces on the two corresponding irrigation supports. Multiple drip inlets are fixedly installed at the bottom of the irrigation drip, and rubber drip heads are fixedly installed at the bottom of the drip inlets. Short rods are horizontally hinged on both sides of the bottom of the drip inlets. A torsion spring is fixedly installed between the short rods and the drip inlets. The short rods contact and cooperate with the rubber drip heads to clamp them. Multiple atomizing nozzles are fixedly installed on the irrigation drip via elastic bands. The atomizing nozzles contact and cooperate with the drip inlets, and the inner wall of the atomizing nozzles contacts and cooperates with the short rods.

[0010] Furthermore, a fixed cylinder is fixedly installed inside the fertilizer and water output pipe. Positioning screws are longitudinally rotatably installed at both ends of the fixed cylinder. A stirring blade is fixedly installed at the top of the positioning screw. A sliding sleeve is longitudinally rotatably installed on the positioning screw. The sliding sleeve cooperates with the lead screw of the positioning screw. A stirring fan blade is fixedly installed on the sliding sleeve. A magnet is fixedly installed on the inner wall of the sliding sleeve. Adjusting screws are longitudinally rotatably installed at both ends of the fixed cylinder. Sliding brackets are fixedly installed at both ends of the fixed cylinder. Adjusting magnets are longitudinally slidably installed on the sliding brackets. The adjusting magnets cooperate with the lead screw of the adjusting screw. The adjusting magnets attract each other with the magnets on the inner ring of the sliding sleeve.

[0011] Furthermore, a bevel gear is fixedly installed at one end of the adjusting screw, and a mixing motor is fixedly installed on the fertilizer output pipe. A bevel gear is fixedly installed on the mixing motor, and the bevel gear on the mixing motor meshes with the bevel gear on the adjusting screw.

[0012] Furthermore, the irrigation support is provided with a positioning groove, and a pair of adjustment keys are slidably installed laterally at the front end of the drip interface. A compression spring is fixedly installed between the adjustment keys and the drip interface, and positioning teeth are fixedly installed on the adjustment keys. The positioning teeth on the adjustment keys contact and cooperate with the positioning groove on the irrigation support.

[0013] Furthermore, gears are fixedly installed at the front ends of both the first and second valve cores, and an adjustment plate is horizontally rotatably installed on the pipe support. A first motor and a second motor are fixedly installed on the adjustment plate, and gears are fixedly installed on both the first and second motors. The gear on the first motor meshes with the gear at the front end of the second valve core, and the second motor meshes with the gear at the front end of the first valve core.

[0014] Furthermore, a fertilizer pump is fixedly installed on the top of the pipe support, the number of which corresponds to the fertilizer input pipe. The fertilizer input pipe is connected to an external liquid fertilizer storage tank to control the pumping of liquid in the fertilizer input pipe. A water injection pipe is fixedly installed at the bottom of the pipe support, connected to an external water tank and fixedly connected to a water input pipe. A water flow pump is fixedly installed at the bottom of the pipe support, connected to the water injection pipe to control the pumping of water in the water injection pipe. A discharge motor is fixedly installed at the bottom of the pipe support, connected to a waste discharge pipe to control the discharge of waste liquid.

[0015] The beneficial effects of this invention compared with the prior art are: (1) This invention can adjust the ratio of fertilizer and water arbitrarily by the cooperation of the first valve core and the second valve core, thereby improving the practicality of the equipment; (2) This invention can fully mix fertilizer and water during the transportation of water and fertilizer by positioning screw and stirring fan blade, and can adjust the mixing uniformity at any time as needed, so that fertilizer and water can be fully mixed, reducing fertilizer waste and improving fertilizer utilization rate; (3) This invention can adjust the height of fertilizer and water spraying by irrigation bracket and telescopic pipe, and can wash crops with water flow during irrigation, avoiding the accumulation of dust on the surface of crops and affecting growth; (4) This invention can avoid soil blockage by clamping the opening at the bottom of the rubber drip irrigation head by short rod, and can control the discharge of fertilizer by limiting the rotation of the rubber drip irrigation head by atomizing nozzle, thereby improving the practicality of the equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the front structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the top structure of the present invention.

[0018] Figure 3 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 4 This is a schematic diagram of the left side of the control mechanism of the present invention.

[0020] Figure 5 This is a schematic diagram of the rear structure of the control mechanism of the present invention.

[0021] Figure 6 This is a schematic diagram of the right side of the control mechanism of the present invention.

[0022] Figure 7 This is a schematic diagram of the assembly structure of the irrigation support of the present invention.

[0023] Figure 8 This is a schematic diagram of the assembly structure of the drip irrigation pipe of the present invention.

[0024] Figure 9 This is a schematic diagram of the half-section structure of the mixing valve of the present invention.

[0025] Figure 10 This is a schematic diagram of a half-section of the fertilizer and water output pipeline of the present invention.

[0026] Figure 11 for Figure 8 Enlarged structural diagram at point A1.

[0027] Figure 12 for Figure 10 Enlarged structural diagram at point B1.

[0028] Reference numerals: 1-Control mechanism; 2-Irrigation mechanism; 101-Pipe support; 102-Fertilizer input pipe; 103-Mixing valve; 104-Water input pipe; 105-Fertilizer and water output pipe; 106-Water injection pipe; 107-Fertilizer pump; 108-Waste discharge pipe; 109-Water pump; 110-Mixing motor; 111-Regulating plate; 112-Discharge motor; 113-First valve core; 114-Second valve core; 115-First motor; 116-Second... Two motors; 117-positioning screw; 118-stirring blade; 119-sliding sleeve; 120-fixed cylinder; 121-adjusting screw; 122-adjusting magnet; 123-sliding bracket; 201-pouring bracket; 202-input pipe; 203-output pipe; 204-drip interface; 205-adjusting key; 206-telescopic pipe; 207-pouring drip; 208-atomizing nozzle; 209-drip inlet; 210-short rod; 211-rubber drip head. Detailed Implementation

[0029] The technical solution provided by the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] like Figures 1-12As shown, a smart water and fertilizer machine for greenhouses includes a control mechanism 1 and an irrigation mechanism 2. The control mechanism 1 includes a pipe support 101, within which multiple pairs of fertilizer input pipes 102 and water input pipes 104 are fixedly installed. A fertilizer pump 107 is fixedly installed on the top of the pipe support 101, the number of which corresponds to the number of fertilizer input pipes 102. The fertilizer input pipes 102 are connected to an external liquid fertilizer storage tank, controlling the pumping of the fertilizer input pipes 102. A water injection pipe 106 is fixedly installed at the bottom of the pipe support 101, connected to an external water tank and fixedly connected to the water input pipes 104. A water pump 109 is fixedly installed at the bottom of the pipe support 101, and the water pump 109 is connected to the water injection pipes 104. 6. The pumping of water through the control water injection pipe 106 is connected to the fertilizer input pipe 102 and the water input pipe 104 via a mixing valve 103. The mixing valve 103 is a horizontally installed T-shaped connecting valve. The upper half of the longitudinal pipe of the mixing valve 103 has a larger diameter than the lower half. The fertilizer input pipe 102 is fixedly connected to the longitudinal pipe at the top of the mixing valve 103. The water input pipe 104 is connected to the transverse pipe of the mixing valve 103. A first valve core 113 is horizontally rotatably installed inside the longitudinal pipe of the mixing valve 103. A fertilizer and water output pipe 105 is fixedly connected to the bottom of the mixing valve 103. The first valve core 113 is a U-shaped valve core, with the opening of the U facing the transverse groove of the mixing valve 103 to facilitate the flow of water into the transverse pipe of the mixing valve 103. The mixing valve 103 has a first valve core 113 that contacts and engages with the narrower longitudinal pipe of the upper part of the mixing valve 103. This valve core controls the flow rate of fertilizer solution from the fertilizer input pipe 102 into the fertilizer output pipe 105. A second valve core 114 is laterally rotatably mounted within the transverse pipe of the mixing valve 103. This second valve core controls the flow rate of water from the water input pipe 104 into the fertilizer output pipe 105, facilitating control of the fertilizer-to-water ratio. Gears are fixedly mounted at the front ends of both the first and second valve cores 113 and 114. An adjusting plate 111 is laterally rotatably mounted on the pipe support 101. A first motor 115 and a second motor 116 are fixedly mounted on the adjusting plate 111. Gears are fixedly mounted on both the first and second motors 115 and 116. The gear on motor 115 meshes with the gear at the front end of the second valve core 114, and the second motor 116 meshes with the gear at the front end of the first valve core 113. By starting the first motor 115 and the second motor 116, the first valve core 113 and the second valve core 114 are driven to rotate laterally within the mixing valve 103. The flow rate of fertilizer solution and water can be adjusted as needed, and the concentration ratio of water and fertilizer can be quickly adjusted. At the same time, any pipe can be opened or closed as needed for separate watering or separate fertilization. If the first motor 115 or the second motor 116 fails to operate, the adjusting plate 111 can be moved to de-meet with the first valve core 113 and the second valve core 114. The first valve core 113 and the second valve core 114 can be manually adjusted to improve the fault tolerance of the equipment.

[0031] like Figures 1-12 As shown, a fertilizer and water output pipe 105 is fixedly installed at the bottom of the pipe support 101. Multiple fertilizer and water output pipes 105 are connected at their bottoms via transverse pipes. A waste discharge pipe 108 is fixedly installed at the bottom of the pipe support 101. A discharge motor 112 is also fixedly installed at the bottom of the pipe support 101, connected to the waste discharge pipe 108 to control waste liquid discharge. The irrigation mechanism 2 includes an input pipe 202 and an output pipe 203. The input pipe 202 is fixedly connected to the transverse pipe at the bottom of the fertilizer and water output pipe 105, and the output pipe 203 is fixedly connected to the waste discharge pipe 108. Both the input pipe 202 and the output pipe 203 are fixedly equipped with... The irrigation supports 201 are installed on the inlet pipe 202 and the outlet pipe 203, with each support facing the other at both ends of each row of crops. A telescopic pipe 206 is fixedly installed at the bottom of each irrigation support 201, connecting the inlet pipe 202 and the outlet pipe 203. A drip inlet 204 is fixedly installed at the top of the telescopic pipe 206, and an irrigation drip 207 is fixedly installed on the drip inlet 204. The irrigation drip 207 is fixedly installed between the drip inlets 204 on the two corresponding irrigation supports 201. Multiple drip nozzles 209 are fixedly installed at the bottom of the irrigation nozzles 207. A rubber drip head 211 is fixedly installed. Short rods 210 are horizontally hinged to both sides of the bottom of the drip outlet 209. A torsion spring is fixedly installed between the short rods 210 and the drip outlet 209. The short rods 210 contact and engage with the rubber drip head 211 to clamp it, so that the rubber drip head 211 is kept closed by the compression of the short rods 210 when not in use. This prevents soil from adhering to the inner wall of the rubber drip head 211 and causing blockage when the irrigation drip tube 207 is at a lower position. During fertilization, the pressure of the fertilizer water pushes the short rods 210 open and opens the drip outlet at the bottom of the rubber drip head 211 for fertilization. An elastic band is fixedly installed on the irrigation drip tube 207. Multiple atomizing nozzles 208 are engaged with drip irrigation inlets 209 to atomize the water flowing from the rubber drip irrigation head 211, thereby increasing the coverage area of ​​the water spray. The inner wall of the atomizing nozzle 208 is engaged with a short rod 210 to restrict the rotation of the short rod 210. During fertilization, the rotation of the short rod 210 is restricted by the atomizing nozzles 208, keeping the rubber drip irrigation head 211 in a closed state. Since the fertilizer is more viscous than water, it is difficult for the fertilizer solution to flow out from the gap at the bottom of the closed rubber drip irrigation head 211. Fertilization can be adjusted at each nozzle as needed, which helps to save fertilizer and improve fertilizer utilization.

[0032] like Figures 1-12As shown, the irrigation bracket 201 is provided with a positioning groove. A pair of adjustment keys 205 are slidably installed laterally at the front end of the drip interface 204. A compression spring is fixedly installed between the adjustment keys 205 and the drip interface 204. Positioning teeth are fixedly installed on the adjustment keys 205. The positioning teeth on the adjustment keys 205 contact and cooperate with the positioning groove on the irrigation bracket 201 to fix the height of the drip interface 204, so that the irrigation drip 207 can fertilize or water at a suitable height. By pressing the two adjustment keys 205 to slide them toward the center of the drip interface 204, the positioning teeth on the adjustment keys 205 are disengaged from the positioning groove on the irrigation bracket 201. Then, the drip interface 204 is moved to slide longitudinally within the irrigation bracket 201 to adjust the extension height of the telescopic tube 206. This adjusts the irrigation drip 207 to a suitable height for fertilization and watering, avoiding the accumulation of dust on the leaves of crops in the greenhouse due to the inability to receive rainwater, which would affect crop growth.

[0033] like Figures 1-12As shown, a fixed cylinder 120 is fixedly installed inside the fertilizer and water output pipe 105. Positioning screws 117 are longitudinally rotatably installed at both ends of the fixed cylinder 120. A stirring blade is fixedly installed on the top of the positioning screw 117. A sliding sleeve 119 is longitudinally rotatably installed on the positioning screw 117, engaging with the lead screw of the positioning screw 117. A stirring fan blade 118 is fixedly installed on the sliding sleeve 119. A magnet is fixedly installed on the inner wall of the sliding sleeve 119. Adjusting screws 121 are longitudinally rotatably installed at both ends of the fixed cylinder 120. Sliding brackets are fixedly installed at both ends of the fixed cylinder 120. 123. An adjusting magnet 122 is longitudinally slidably mounted on the sliding bracket 123. The adjusting magnet 122 engages with the adjusting screw 121. The adjusting magnet 122 attracts the magnet on the inner ring of the sliding sleeve 119. A bevel gear is fixedly mounted on one end of the adjusting screw 121. A mixing motor 110 is fixedly mounted on the fertilizer output pipe 105. A bevel gear is fixedly mounted on the mixing motor 110. The bevel gear on the mixing motor 110 meshes with the bevel gear on the adjusting screw 121. By starting the mixing motor 110, the adjusting screw 121 is driven to rotate within the fixed cylinder 120. The adjusting screw 121 engages with the lead screw of the adjusting magnet 122, causing the adjusting magnet 122 to slide longitudinally on the sliding bracket 123, thus adjusting the height position of the adjusting magnet 122. The magnetic force of the adjusting magnet 122 attracts the sliding sleeve 119 to slide longitudinally on the positioning screw 117. Simultaneously, the engagement between the sliding sleeve 119 and the lead screw of the positioning screw 117 causes the sliding sleeve 119 to rotate on the positioning screw 117, which in turn rotates the stirring blade 118, adjusting the angle of the stirring blade 118 and the angle of overlap between the positioning screw 117 and the stirring blade 118. This system is used to ensure that the water-fertilizer mixture prepared in the mixing valve 103 flows into the fertilizer and water output pipe 105 during irrigation. The water flow drives the positioning screw 117 and the stirring blade 118 to rotate synchronously. The blades on the positioning screw 117 and the stirring blade 118 thoroughly stir the water-fertilizer mixture, improving the mixing effect. When mixing is not required, the rotation angle of the stirring blade 118 can be adjusted by starting the mixing motor 110, so that it overlaps with the blade angle of the positioning screw 117, reducing the obstruction of excess blades and improving the efficiency of water flow, thereby improving irrigation efficiency.

[0034] Working principle: When irrigating crops in a greenhouse with fertilizer solution, first adjust the irrigation drip pipe 207 to a lower position and remove the atomizing nozzle 208 from the drip irrigation port 209. Then, by starting the first motor 115 and the second motor 116, adjust the opening range of the first valve core 113 and the second valve core 114 to adjust the ratio of water flow to fertilizer solution. Then, start the corresponding fertilizer pump 107 and water pump 109 to deliver fertilizer solution and water into the mixing valve 103. After the initial mixing through the mixing valve 103, the solution enters the fertilizer and water output pipe 105 for thorough stirring and is then transported to the input pipe 202 through the horizontal pipe at the bottom of the fertilizer and water output pipe 105, and then output from the rubber drip irrigation head 211 for irrigation.

[0035] After the fertilizer application is completed, the waste discharge pipe 108 is opened by starting the discharge motor 112, and the first motor 115 is started to drive the first valve core 113 to close the fertilizer input. The water in the water input pipe 104 flushes the inside of the input pipe 202 and the output pipe 203, washing away the fertilizer residue inside the input pipe 202 and the output pipe 203, and the waste liquid is discharged through the waste discharge pipe 108 to facilitate the next round of application of different types of fertilizer.

[0036] When it is necessary to water crops, first adjust the irrigation drip pipe 207 to a suitable position and attach the atomizing nozzle 208 to the bottom of the drip irrigation inlet 209. Then, start the water pump 109 to pump water into the irrigation drip pipe 207 and spray the water onto the crops through the atomizing nozzle 208. If a large amount of water is needed, remove the atomizing nozzle 208 to increase the output efficiency of the rubber drip irrigation head 211 and improve irrigation efficiency.

Claims

1. A smart water and fertilizer machine for greenhouses, comprising a control mechanism (1) and an irrigation mechanism (2), wherein the control mechanism (1) includes a pipe support (101), and multiple pairs of fertilizer input pipes (102) and water input pipes (104) are fixedly installed inside the pipe support (101), characterized in that, The fertilizer input pipe (102) and the water input pipe (104) are connected by a mixing valve (103). The mixing valve (103) is a T-shaped connecting valve installed horizontally. A first valve core (113) is installed horizontally in the longitudinal pipe of the mixing valve (103), and a second valve core (114) is installed horizontally in the transverse pipe of the mixing valve (103). Multiple fertilizer and water output pipes (105) are fixedly connected to the bottom of the mixing valve (103). Waste discharge pipe (108) is fixedly installed at the bottom of the pipe support (101). The bottoms of the multiple fertilizer and water output pipes (105) are connected by a horizontal pipe. The irrigation mechanism (2) includes an input pipe (202) and an output pipe (203). The input pipe (202) is fixedly connected to the horizontal pipe at the bottom of the fertilizer and water output pipe (105). The output pipe (203) is fixedly connected to the waste discharge pipe (108). Irrigation support (201) is fixedly installed on both the input pipe (202) and the output pipe (203). The valve core (113) is a U-shaped valve core, with the opening of the U-shape facing the transverse groove of the mixing valve (103). The diameter of the upper half of the longitudinal pipe of the mixing valve (103) is larger than that of the lower half. The irrigation supports (201) installed on the input pipe (202) and output pipe (203) are opposite each other. A telescopic pipe (206) is fixedly installed at the bottom of the irrigation support (201). The telescopic pipe (206) is connected to the input pipe (202) and output pipe (203) through a pipe. A drip interface (204) is fixedly installed at the top of the telescopic pipe (206). An irrigation drip (207) is fixedly installed on the drip interface (204). The irrigation drip (207) is fixedly installed between the drip interfaces (204) on the two corresponding irrigation supports (201). The bottom of the irrigation drip (207) is fixed. Multiple drip irrigation ports (209) are fixedly installed. A rubber drip irrigation head (211) is fixedly installed at the bottom of the drip irrigation port (209). Short rods (210) are horizontally hinged on both sides of the bottom of the drip irrigation port (209). A torsion spring is fixedly installed between the short rods (210) and the drip irrigation port (209). The short rods (210) and the rubber drip irrigation head (211) are in contact and clamped. Multiple atomizing nozzles (208) are fixedly installed on the irrigation drip tube (207) by elastic rubber bands. The atomizing nozzles (208) are in contact and cooperate with the drip irrigation port (209). The inner wall of the atomizing nozzles (208) is in contact and cooperate with the short rods (210). A fixed cylinder (120) is fixedly installed inside the fertilizer and water output pipe (105). A positioning screw (117) is longitudinally rotatably installed at both ends of the fixed cylinder (120). A stirring blade is fixedly installed at the top of the positioning screw (117). A sliding sleeve (119) is longitudinally rotatably installed on the positioning screw (117). The sliding sleeve (119) cooperates with the screw of the positioning screw (117). A stirring fan blade (118) is fixedly installed on the sliding sleeve (119). A magnet is fixedly installed on the inner wall of the sliding sleeve (119). An adjusting screw (121) is longitudinally rotatably installed at both ends of the fixed cylinder (120). A sliding bracket (123) is fixedly installed at both ends of the fixed cylinder (120). An adjusting magnet (122) is longitudinally slidably installed on the sliding bracket (123). The adjusting magnet (122) cooperates with the screw of the adjusting screw (121). The adjusting magnet (122) and the magnet in the inner ring of the sliding sleeve (119) attract each other.

2. The intelligent water and fertilizer machine for greenhouses according to claim 1, characterized in that, A bevel gear is fixedly installed at one end of the adjusting screw (121), and a mixing motor (110) is fixedly installed on the fertilizer output pipe (105). A bevel gear is fixedly installed on the mixing motor (110), and the bevel gear on the mixing motor (110) meshes with the bevel gear on the adjusting screw (121).

3. The intelligent water and fertilizer machine for greenhouses according to claim 1, characterized in that, The irrigation bracket (201) is provided with a positioning groove. A pair of adjustment keys (205) are slidably installed at the front end of the drip interface (204). A compression spring is fixedly installed between the adjustment key (205) and the drip interface (204). A positioning tooth is fixedly installed on the adjustment key (205). The positioning tooth on the adjustment key (205) contacts and engages with the positioning groove on the irrigation bracket (201).

4. The intelligent water and fertilizer machine for greenhouses according to claim 1, characterized in that, Gears are fixedly installed at the front ends of the first valve core (113) and the second valve core (114). An adjusting plate (111) is rotatably installed on the pipe support (101). A first motor (115) and a second motor (116) are fixedly installed on the adjusting plate (111). Gears are fixedly installed on both the first motor (115) and the second motor (116). The gear on the first motor (115) meshes with the gear at the front end of the second valve core (114), and the second motor (116) meshes with the gear at the front end of the first valve core (113).

5. The intelligent water and fertilizer machine for greenhouses according to claim 1, characterized in that, A fertilizer pump (107) is fixedly installed on the top of the pipe support (101). The number of fertilizer pumps (107) corresponds to the number of fertilizer input pipes (102). The fertilizer input pipes (102) are connected to an external liquid fertilizer storage tank to control the pumping of the fertilizer input pipes (102). A water injection pipe (106) is fixedly installed at the bottom of the pipe support (101). The water injection pipe (106) is connected to an external water tank and is fixedly connected to a water flow input pipe (104). A water flow pump (109) is fixedly installed at the bottom of the pipe support (101). The water flow pump (109) is connected to the water injection pipe (106) to control the pumping of the water injection pipe (106). A discharge motor (112) is fixedly installed at the bottom of the pipe support (101). The discharge motor (112) is connected to a waste discharge pipe (108) to control the discharge of waste liquid.

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