Irrigation and fertilization equipment for paddy field

Abstract

The invention provides irrigation and fertilization equipment for a paddy field, and relates to the field of farm irrigation, the irrigation and fertilization equipment comprises a water level measurement mechanism for measurement, the water level height measured by the water level measurement mechanism is identified by displaying different colors through an identification assembly, and an identification module identifies the color displayed by the identification assembly; the whole identification assembly is cylindrical, the identification assembly identifies the water level through the color, exposed at the identification window, of a cylindrical identification piece synchronously fluctuating along with the height of the water level, and the expansion assembly on the surface of the identification piece is expanded when passing through the identification window to expand the identification area. A failure detection mechanism is further arranged on the water level measuring mechanism and used for detecting whether the water level measuring mechanism fails or not. The identification assembly is cylindrical and is excellent in wind resistance and lodging resistance, the expansion assembly can be unfolded to improve the identification visual range, meanwhile, the identification assembly can cooperate with a fertilization pipe and a control module, and water level monitoring and precise irrigation and fertilization of the paddy field are achieved.

Description

Technical Field

[0001] This invention relates to the field of irrigation technology, specifically to irrigation and fertilization equipment for paddy fields. Background Technology

[0002] In practical applications of paddy field irrigation and water level monitoring, marking structures typically operate outdoors for extended periods. They require not only excellent visual readability but also high stability and reliability under wind loads, rain erosion, and prolonged agricultural disturbances. Existing technologies often employ plate or strip structures to display water level information of varying heights or colors within the marking window area. However, in outdoor environments with variable wind directions or high wind speeds, these plate-like structures often experience concentrated stress and significant lateral drag moments. This makes them prone to deflection, tilting, or even collapse under prolonged wind loads or extreme weather conditions, affecting the stable display and long-term lifespan of the water level markings.

[0003] For example, Chinese patent CN202411244836.6, "Automated Irrigation Device for Paddy Fields and its Usage Method," discloses a technical solution for color-coding water levels. The marking component employs a flat, plate-like structure with a stabilizing structure underneath to improve its posture stability in water. While this solution improves the intuitiveness of water level identification, the uneven force distribution of the plate-like structure under wind conditions limits its overall resistance to lateral lodging. Furthermore, its structure relies primarily on device posture stabilization, lacking a water level tracking and detection structure that complements a floating platform or floating detection unit. This leaves room for improvement in adaptability to complex water surface fluctuations and dynamic water level changes. Moreover, failure of the water level measurement mechanism is often difficult to detect in a timely manner, potentially leading to inaccurate water level data and causing deviations in irrigation supply or fertilization control, thus affecting the water and fertilizer management of paddy fields.

[0004] Furthermore, in some existing water level marking structures, the size of the marking area and its visible height are often limited by the overall outline of the device. If it is necessary to expand the marking area or improve long-distance readability, it is often necessary to increase the size of the marking components themselves, thereby further increasing the wind load area and weakening structural stability. This is even more pronounced in open rice paddies and open irrigation canals. Therefore, how to maintain the structural stability and anti-collapse capability of the device while simultaneously ensuring the intuitiveness and readability of the water level display remains one of the urgent technical problems to be solved in existing related technologies. Summary of the Invention

[0005] This invention provides paddy field irrigation and fertilization equipment to address the technical problems of insufficient lodging resistance and water level reading stability of existing paddy field water level marking devices under wind load conditions.

[0006] The present invention solves the above-mentioned technical problems through the following technical solutions:

[0007] This invention provides a paddy field irrigation and fertilization device, including a fertilizer pipe, a control module, multiple water level monitoring modules, and multiple water delivery execution units. The control module is connected to the water level monitoring modules and the execution units respectively. The water level monitoring module includes a water level measuring mechanism and an identification module. The water level height measured by the water level measuring mechanism is indicated by different colors displayed by an identification component, and the identification module identifies the colors displayed by the identification component.

[0008] The overall shape of the marking component is cylindrical. The marking component uses the color of the cylindrical marking piece that rises and falls synchronously with the water level to indicate the water level at the marking window. The extension component on the surface of the marking piece unfolds when it passes through the marking window to expand the marking area.

[0009] The water level measuring mechanism is also equipped with a failure detection mechanism to detect whether the water level measuring mechanism has failed.

[0010] The entire sign component is cylindrical, which can improve its resistance to falling under extreme weather conditions such as strong winds. At the same time, the expandable extension components can increase the sign area without excessively damaging the overall cylindrical structure of the sign component, thereby reducing the difficulty of recognition.

[0011] In this technical solution, the water level measuring mechanism further includes a water level measuring component. The water level measuring component includes a partition cylinder with several water-permeable holes on its surface. A floating platform is provided inside the partition cylinder. The floating platform slides vertically inside the partition cylinder, and the top of the floating platform is connected to the marking component in a transmission connection.

[0012] The floating platform is slidably sleeved on the guide vertical rod, which is fixed to the inner wall of the partition cylinder by multiple first connecting rods at its bottom end, and the guide vertical rod is located at the center of the floating platform and the partition cylinder.

[0013] A collar is fixed on the bottom side wall of the floating platform, and the collar is slidably sleeved on the guide vertical rod.

[0014] The floating platform can employ common buoyancy-enhancing techniques found in existing technologies to improve its buoyancy.

[0015] In this technical solution, the failure detection mechanism includes a detection unit and a display component that cooperates with the detection unit. The detection unit is set on a floating platform. The detection unit floats up and down with the normally operating floating platform, and floats with the liquid surface when it is disengaged from the stuck floating platform. After the detection unit is disengaged from the floating platform, the display component displays the abnormality.

[0016] In this technical solution, the detection unit includes at least one of an upper detection unit and a lower detection unit, which are respectively disposed above and below the floating platform;

[0017] The upper detection part and the lower detection part are respectively connected to the display component via a transmission. The display component includes two display units, which correspond to the upper detection part and the lower detection part respectively. The display units are fixed on the floating platform.

[0018] In this technical solution, the display unit includes a comparison display element, which is wrapped around the detection element of the upper or lower detection part and fixed on the floating platform. The upper and lower detection parts detach from the floating platform, causing their corresponding detection ends to detach from the display element, thereby causing the display floating platform to become stuck and not float with the liquid surface.

[0019] In this technical solution, the upper detection unit includes an upper floating plate, which overlaps the groove on the upper surface of the floating platform and is slidably connected to a first guide shaft, that is, the upper floating plate is penetrated by the first guide shaft. A first transmission rod arranged vertically is fixed on the upper surface of the upper floating plate, and a first detection element is fixed on the top of the first transmission rod. The first detection element extends into the interior of the corresponding comparison display element.

[0020] A first guide sleeve is fixed to the top of the first guide shaft, and the first guide sleeve is fixed to the inner wall of the separator cylinder.

[0021] The bottom of the first guide shaft is fixed to the surface of the floating platform; or it penetrates the floating platform and its bottom is fixed to the bottom side wall of the floating platform by a third connecting rod.

[0022] In this technical solution, the lower detection unit includes a lower floating plate, which overlaps the groove on the lower surface of the floating platform. A second transmission rod is fixed at the center of the upper surface of the lower floating plate, which is arranged vertically. The second transmission rod passes through the floating platform, and a second detection element is fixed at the top of the second transmission rod. The second detection element extends into the corresponding comparison display element.

[0023] Preferably, at least one second guide sleeve is fixed on the side wall of the lower floating plate, the second guide sleeve is slidably connected to the surface of a guide rod arranged vertically, and the guide rod is fixed to the lower surface of the floating platform.

[0024] The lower detection section, located at the bottom of the floating platform, is surrounded by a partition shell to prevent excessive impurities from causing the lower floating platform to jam. The partition shell has water inlet holes smaller than the diameter of the permeable holes. The partition shell is fixed to the lower surface of the floating platform.

[0025] The bottom of the guide rod is fixed to prevent the lower floating platform from falling off. When there are two or more guide rods, the limiting rod is connected to the bottom of the two adjacent guide rods.

[0026] Specifically, the comparison display component is a tubular structure, while the first and second detection components are both cylindrical structures, and the comparison display component is fitted onto the corresponding first and second detection surfaces. A comparison coating is applied to the surface of the comparison display component, and a display coating is applied to the surfaces of the first and second detection components.

[0027] In this technical solution, the marking component also includes an outer shell that is fitted over the marking component. The outer shell is cylindrical and has a display slot in the middle area. The area where the display slot is located is the marking window. The height of the outer shell is fixed.

[0028] The surface of the sign is provided with multiple marking areas formed by painting different colors, and each marking area is provided with at least one extension on both sides of the sign.

[0029] In this technical solution, the extension component is a first extension part, which includes a fixed connecting rod. The fixed connecting rod is fixed to the outer wall of the sign part in a horizontal direction, and a first extension plate is rotatably connected to the end of the fixed connecting rod. A first coil spring is provided at the rotatable connection between the first extension plate and the fixed connecting rod.

[0030] Furthermore, the rotatable connection between the first extension plate and the fixed link is located inside the outer casing.

[0031] In this technical solution, the extension component is a second extension part, which includes a second extension plate. The second extension plate is rotatably connected to the outer wall of the sign, and a second coil spring is provided at the rotatable connection between the second extension plate and the outer wall of the sign.

[0032] The marking area was further expanded by unfolding the first and second expansion panels.

[0033] The surface color of the first and second expansion plates is the same as the color of the marking area they are located in.

[0034] The first coil spring between the first extension plate and the fixed link ensures that the first extension plate is in a horizontal position when no external force is applied.

[0035] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0036] The positive and progressive effects of this invention are as follows:

[0037] The signage component in this application has an overall cylindrical structure, which exhibits good stress symmetry and stability in outdoor environments where the wind direction is not fixed. Under extreme weather conditions such as strong winds, gusts, or continuous wind loads, the cylindrical shape can reduce the lateral drag torque generated by the wind on the signage component, thereby effectively improving the signage component's resistance to overturning and falling when installed vertically.

[0038] Meanwhile, the signage component is equipped with a deployable extension component, which can be extended outwards to increase the height or visibility of the signage area. However, the extension component only extends to the signage window and does not significantly disrupt the overall cylindrical outline of the signage component. Even after extension, it maintains the continuity of the overall structure and its smooth shape, thus achieving a localized increase and elevation of the signage area while ensuring good wind resistance stability. This significantly reduces the difficulty of water level identification during long-distance observation or in low-light environments.

[0039] Through the above structural design, the marking component achieves a balance between wind resistance stability and water level reading effect. It can adapt to complex meteorological conditions in open environments such as paddy fields, rivers, and canals, while ensuring that the water level display information has good intuitiveness and recognizability.

[0040] Meanwhile, the identification component can also work in conjunction with the fertilizer pipe and control module to enable the irrigation water supply and fertilization process to be linked and controlled under the same monitoring system, thereby further improving the precision irrigation and precision fertilization effect of paddy fields while ensuring the reliability of water level identification.

[0041] By setting up a failure detection mechanism, this application can monitor the working status of the water level measuring mechanism in real time. When the water level measuring mechanism malfunctions or becomes abnormal, the failure detection mechanism can detect it in time, thereby ensuring the reliability and accuracy of the water level monitoring data and avoiding abnormal irrigation or fertilization control due to measurement failure. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0043] Figure 2 For the present invention Figure 1 A schematic diagram of the structure viewed from below;

[0044] Figure 3 For the present invention Figure 1 A top-view structural diagram;

[0045] Figure 4 For the present invention Figure 3 A schematic diagram of the planar structure of the cross-section at point AA;

[0046] Figure 5 For the present invention Figure 3A three-dimensional structural diagram of the cross-section at point AA;

[0047] Figure 6 For the present invention Figure 5 A magnified schematic diagram of the local structure at point I;

[0048] Figure 7 For the present invention Figure 5 A magnified schematic diagram of the structure at point J;

[0049] Figure 8 This is a schematic diagram of the structure of the floating platform, failure detection component, and display component of the present invention;

[0050] Figure 9 For the present invention Figure 8 A structural diagram from another perspective;

[0051] Figure 10 For the present invention Figure 8 A schematic diagram of the structure viewed from below;

[0052] Figure 11 This is a schematic diagram of the structure of the marking component with the second extension portion of the present invention;

[0053] Figure 12 For the present invention Figure 11 A schematic diagram of the structure after the outer casing has been removed;

[0054] Figure 13 This is a schematic diagram of the connection structure between the first link and the second link of the present invention.

[0055] Explanation of reference numerals in the attached figures

[0056] 1. Divider tube; 11. Bearing cross plate; 12. Ground anchor bolt;

[0057] 2. Guide vertical rod; 21. First connecting rod; 22. Second connecting rod; 23. Synchronization connecting rod;

[0058] 3. Floating platform; 31. Ring;

[0059] 4. Upper detection unit; 41. Upper float plate; 42. First guide shaft; 421. Third connecting rod; 43. First guide sleeve; 44. First transmission rod; 45. First detection piece;

[0060] 5. Lower detection section; 51. Lower float plate; 52. Second transmission rod; 53. Second detection component; 54. Second guide sleeve; 55. Guide rod; 56. Limiting rod; 57. Separator shell;

[0061] 6. Display component; 61. Comparison display element; 62. First fixing rod;

[0062] 7. Outer shell; 71. Second fixing rod; 72. Display through slot; 73. Connecting rod;

[0063] 8. Identification components;

[0064] 9a, First extension section; 9a1, Fixed connecting rod; 9a2, First extension plate;

[0065] 9b, Second Expansion Section; 9b1, Second Expansion Board. Detailed Implementation

[0066] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments.

[0067] like Figure 1 and Figure 2 As shown, the paddy field irrigation and fertilization equipment includes a fertilizer pipe, a control module, multiple water level monitoring modules, and multiple water delivery execution units. The control module is connected to the water level monitoring modules and the execution units respectively. The water level monitoring module includes a water level measuring mechanism and an identification module. The water level height measured by the water level measuring mechanism is indicated by different colors displayed by an identification component. The identification module identifies the colors displayed by the identification component.

[0068] The overall shape of the marking component is cylindrical. The water level is indicated by the color of the cylindrical marking piece 8 that rises and falls synchronously with the water level at the marking window. The extension component on the surface of the marking piece 8 unfolds when it passes through the marking window, thus expanding the marking area.

[0069] The water level measuring mechanism is also equipped with a failure detection mechanism to detect whether the water level measuring mechanism has failed.

[0070] Example 1

[0071] In this embodiment, as Figures 1-5 As shown, the water level measuring mechanism also includes a water level measuring component. The water level measuring component includes a partition cylinder 1 with several water-permeable holes on its surface. A floating platform 3 is provided inside the partition cylinder 1. The floating platform 3 slides vertically inside the partition cylinder 1, and the top of the floating platform 3 is connected to the marker 8 in a transmission connection.

[0072] The floating platform 3 is slidably sleeved on the guide vertical rod 2. The guide vertical rod 2 is fixed to the inner wall of the partition cylinder 1 by a plurality of first connecting rods 21 at its bottom end, and the guide vertical rod 2 is located at the center of the floating platform 3 and the partition cylinder 1.

[0073] A collar 31 is fixed on the bottom side wall of the floating platform 3, and the collar 31 is slidably sleeved on the guide vertical rod 2.

[0074] A second connecting rod 22 is slidably connected to the top outer wall of the guide rod 2. The top of the second connecting rod 22 is fixed to the bottom side wall of the marker 8. The second connecting rod 22 is fixed to the floating platform 3 by a synchronous connecting rod 23.

[0075] The floating platform 3 moves on the surface of the paddy field liquid, causing the second connecting rod 22 to slide on the surface of the first connecting rod 21, thereby causing the marker 8 to move vertically to display the water level.

[0076] Multiple load-bearing horizontal plates 11 are fixed on the outer wall of the dividing cylinder 1, and ground anchor rods 12 are fixed on the load-bearing horizontal plates 11. During installation, the dividing cylinder 1 is placed into a pre-dug pit in the paddy field, and the dividing cylinder 1 is fixed by nailing the ground anchor rods 12 into the soil of the paddy field.

[0077] When it is necessary for the floating platform 3 to not rotate, a limiting vertical rod is inserted into the floating platform 3. The limiting vertical rod passes through the floating platform 3 vertically and is fixedly connected to the inner wall of the partition cylinder 1. The limiting vertical rod forms a rotation constraint on the floating platform 3, thereby preventing the floating platform 3 from rotating around its own axis.

[0078] Alternatively, the guide vertical rod 2 can be configured as a polygonal structure. Correspondingly, the sliding groove formed on the floating platform 3 with the guide vertical rod 2 in sliding engagement is also configured as a polygonal structure with the same cross-sectional shape as the guide vertical rod 2. This allows the floating platform 3 to achieve anti-rotation and limiting through shape engagement while sliding up and down along the guide vertical rod 2, thus preventing the floating platform 3 from rotating. That is, both the guide vertical rod 2 and the second connecting rod 22 are polygonal structures.

[0079] The floating platform 3 can employ common buoyancy-enhancing techniques found in existing technologies to improve its buoyancy.

[0080] The marker component in this application has an overall cylindrical structure, which has good force symmetry and stability. It can reduce lateral drag torque under extreme weather conditions such as strong winds or continuous wind loads, effectively improving its resistance to overturning and lodging. The marker component is equipped with a deployable extension component that only unfolds at the marker window without disrupting the overall cylindrical outline. This can increase the height of the marker area or the visibility range, thereby reducing the difficulty of water level identification at long distances or in low-light environments while ensuring stability.

[0081] In addition, the identification component can work in conjunction with the fertilizer pipe and control module to enable irrigation and fertilization to be controlled in a coordinated manner under the same monitoring system, thereby improving the precision irrigation and fertilization effect on paddy fields while ensuring the reliability of water level identification.

[0082] Example 2

[0083] like Figures 8-10As shown, the failure detection mechanism includes a detection unit and a display component 6 that cooperates with the detection unit. The detection unit is set on the floating platform 3. The detection unit floats up and down with the normally operating floating platform 3, and floats with the liquid surface when it is disengaged from the stuck floating platform 3. After the detection unit is disengaged from the floating platform 3, the abnormality is displayed through the display component 6.

[0084] Preferably, the detection unit includes at least one of an upper detection unit 4 and a lower detection unit 5, wherein the upper detection unit 4 and the lower detection unit 5 are respectively disposed above and below the floating platform 3;

[0085] The upper detection part 4 and the lower detection part 5 are respectively connected to the display component 6. The display component 6 is located above the partition cylinder 1. The display component 6 includes two display units, which correspond to the upper detection part 4 and the lower detection part 5 respectively. The display units are fixed on the floating platform 3.

[0086] Specifically, the display unit includes a comparison display element 61, which is wrapped around the detection element of the upper detection part 4 or the lower detection part 5, and the display element 61 is fixed on the floating platform 3. When the upper detection part 4 and the lower detection part 5 detach from the floating platform 3, their corresponding detection ends detach from the display element 61, thereby causing the display floating platform 3 to become stuck and not float with the liquid surface.

[0087] like Figure 8 As shown, the upper detection unit 4 includes an upper floating plate 41, which overlaps the groove on the upper surface of the floating platform 3 and is slidably connected to the first guide shaft 42, that is, the upper floating plate 41 is penetrated by the first guide shaft 42. A first transmission rod 44 arranged vertically is fixed on the upper surface of the upper floating plate 41, and a first detection element 45 is fixed on the top of the first transmission rod 44. The first detection element 45 extends into the corresponding comparison display element 61.

[0088] The top of the first guide shaft 42 is fixed with a first guide sleeve 43, which is fixed to the inner wall of the separator cylinder 1.

[0089] The bottom of the first guide shaft 42 is fixed to the surface of the floating platform 3; or it penetrates the floating platform 3, and its bottom is fixed to the bottom side wall of the floating platform 3 by the third connecting rod 421.

[0090] like Figure 8 and Figure 10 As shown, the lower detection unit 5 includes a lower float plate 51, which overlaps the groove on the lower surface of the floating platform 3. A second transmission rod 52, which is arranged vertically, is fixed at the center of the upper surface of the lower float plate 51. The second transmission rod 52 passes through the floating platform 3, and a second detection element 53 is fixed at the top of the second transmission rod 52. The second detection element 53 extends into the corresponding comparison display element 61.

[0091] Preferably, at least one second guide sleeve 54 is fixed on the side wall of the lower floating plate 51. The second guide sleeve 54 is slidably connected to the surface of the guide rod 55 arranged vertically, and the guide rod 55 is fixed to the lower surface of the floating platform 3.

[0092] The lower detection unit 5, located at the bottom of the floating platform 3, is surrounded by a partition shell 57 to prevent excessive impurities from causing the lower floating platform 3 to jam. The partition shell 57 has a water inlet hole smaller than the diameter of the water-permeable through-hole. The partition shell 57 is fixed to the lower surface of the floating platform 3.

[0093] The bottom of the guide rod 55 is fixed to prevent the lower floating platform 3 from falling off. At the same time, when there are two or more guide rods 55, the limiting rod 56 is connected to the bottom of the two adjacent guide rods 55.

[0094] Example 3

[0095] like Figure 7 As shown, the comparison display element 61 has a tubular structure, while the first detection element 45 and the second detection element 53 are both cylindrical structures. The comparison display element 61 is fitted onto the corresponding first detection element 45 and second detection surface. A comparison coating is applied to the surface of the comparison display element 61, and a display coating is applied to the surfaces of the first detection element 45 and the second detection element 53. The color contrast between the comparison coating and the display coating is quite obvious.

[0096] When the floating platform 3 is stuck, it no longer floats up and down with the liquid level. When the liquid level overflows the floating platform 3, it does not rise with it, but the upper float plate 41 rises with the liquid level. The rising upper float plate 41 drives the first detection element 45 to move upward via the first transmission rod 44. The comparison display element 61, which cooperates with the first detection element 45, is fixed on the floating platform 3 and its position remains unchanged. The moving first detection element 45 moves above the top of the comparison display element 61, and is thus identified by the identification module, indicating that the floating platform 3 is stuck and abnormal, and thus a repair is reported.

[0097] When the liquid level is lower than the floating platform 3, the lower float 51 moves with the liquid level, thereby driving the second detection element 53 to move down through the first transmission rod 44. The lowered second detection element 53 is identified by the identification module from the bottom of the corresponding comparison display element 61, indicating that the floating platform 3 is stuck or abnormal, and thus a repair is reported.

[0098] The comparison display component 61 is fixed to the floating platform 3 by the first fixing rod 62.

[0099] Since the upper float plate 41 is located on the upper surface of the float platform 3, it is always above the liquid surface and is less affected by interference factors, thus it can be used to detect whether the float platform 3 is stuck.

[0100] Preferably, the floating plate 41 is positioned in the central region near the floating platform 3.

[0101] The lower float plate 51 and its auxiliary components are located inside the partition shell 57. The diameter of the water inlet hole on the partition shell 57 is smaller than the diameter of the water permeable hole on the partition cylinder 1. This can prevent most impurities from entering the partition shell 57 and can reduce the adverse effects on the lower float plate 51 to a certain extent. Therefore, it can be used to detect whether the float platform 3 is stuck.

[0102] Example 4

[0103] like Figure 11 As shown, the marking component also includes an outer shell 7 that is fitted over the marking component 8. The outer shell 7 is cylindrical, and a display slot 72 is provided in the middle area of ​​the outer shell 7. The area where the display slot 72 is located is the marking window. The height of the outer shell 7 is fixed.

[0104] The surface of the marker 8 is provided with multiple marking areas formed by painting different colors, and each marking area is provided with at least one extension on both sides of the marker 8.

[0105] like Figures 4-6 As shown, the expansion component is a first expansion part 9a, which includes a fixed connecting rod 9a1. The fixed connecting rod 9a1 is fixed to the outer wall of the marking member 8 in a horizontal direction, and a first expansion plate 9a2 is rotatably connected to the end of the fixed connecting rod 9a1. A first coil spring is provided at the rotatable connection between the first expansion plate 9a2 and the fixed connecting rod 9a1.

[0106] Furthermore, the rotatable connection between the first extension plate 9a2 and the fixed connecting rod 9a1 is located inside the outer casing 7.

[0107] When the marker 8 moves with the floating platform 3, the first extension plate 9a2 also moves up and down. When the first extension plate 9a2 moves to the upper or lower edge of the display channel 72 and continues to move, the first extension plate 9a2 abuts against the edge of the display channel 72, and the floating platform 3 drives the marker 8 to continue moving, thereby pushing the first extension plate 9a2 to rotate towards the side closer to the marker 8, until the first extension plate 9a2 is completely retracted into the outer shell 7. At this time, the end of the first extension plate 9a2 abuts against the inner wall of the outer shell 7, thereby realizing the retraction of the first extension plate 9a2.

[0108] While one of the first expansion plates 9a2 rotates and retracts, the first expansion plate 9a2 above or below it also moves to the display channel 72. When the end of the corresponding first expansion plate 9a2 passes the upper or lower edge of the display channel 72, it rotates to a horizontal position under the action of the first coil spring, thereby realizing the unfolding of the first expansion plate 9a2.

[0109] The outer shell 7 is fixed to the partition cylinder 1 or the bearing cross plate 11 by the second fixing rod 71.

[0110] like Figure 11 and Figure 12 As shown, the expansion component is a second expansion part 9b, which includes a second expansion plate 9b1. The second expansion plate 9b1 is rotatably connected to the outer wall of the marking member 8, and a second coil spring is provided at the rotatable connection between the second expansion plate 9b1 and the outer wall of the marking member 8.

[0111] Similar to the unfolding and retracting principle of the first expansion plate 9a2, the second expansion plate 9b1 unfolds or retracts after passing the upper or lower edge of the display channel 72.

[0112] The marking area is further expanded by unfolding the first expansion plate 9a2 and the second expansion plate 9b1.

[0113] The surface color of the first expansion plate 9a2 and the second expansion plate 9b1 is the same as the color of the marking area they are located in.

[0114] The first coil spring between the first extension plate 9a2 and the fixed connecting rod 9a1 ensures that the first extension plate 9a2 is in a horizontal position when it is not subjected to external force.

[0115] The first coil spring between the second extension plate 9b1 and the marker 8 ensures that the first extension plate 9a2 is in a horizontal position when not subjected to external force.

[0116] Specifically, the display channel 72 is composed of two opposite arc-shaped channels, and the side wall of the outer shell 7 between the two arc-shaped channels forms a connecting rod 73. The line connecting the two connecting rods 73 is perpendicular to the first expansion plate 9a2 and the second expansion plate 9b1.

[0117] The rebound force provided by the first and second coil springs ensures that the first extension plate 9a2 or the second extension plate 9b1 located inside the outer casing 7 always abuts against the inner wall of the outer casing 7, thereby creating a damping constraint during the up-and-down movement of the marker 8. This damping effect transforms the up-and-down movement of the marker 8 from free sliding to a gentle and stable damped movement, effectively preventing excessively rapid or large displacements due to momentary disturbances.

[0118] In actual use, when the liquid surface fluctuates slightly due to wind or minor disturbances, the damping structure can attenuate and filter the small movements transmitted from the liquid surface disturbance to the indicator 8, so that the indicator 8 does not move frequently with short-term, small-amplitude liquid surface fluctuations, thereby improving the stability and readability of the water level display.

[0119] Example 5

[0120] The execution unit in this application is consistent with the relevant components in the prior art, namely, it includes a water pump and an automatic water valve, and its installation and usage methods are consistent with the prior art.

[0121] The structure and distribution of the fertilizer application pipes are consistent with existing technologies. The fertilizer application pipes are connected to the water pipes and canals in the irrigation system, integrating the fertilizer application pathway in the fertigation system into the irrigation water delivery pathway. When fertilization is required, the fertilizer solution can be transported to the paddy field along with the irrigation water flow through the water pipes and canals, thus completing nutrient delivery simultaneously during irrigation.

[0122] The control module's structure is consistent with existing technologies. It includes a computer control system, a logic control unit, and a communication module. The computer control system establishes data and control connections with the water level monitoring module and the execution unit through the communication module, enabling the reception of monitoring information and the coordinated control of the execution unit.

[0123] The recognition module is consistent with existing technologies, prioritizing non-contact sensors with a large recognition space that can identify color types. In specific implementations, high-performance spectral sensors can be used as recognition units to improve color recognition accuracy and the range of applicable environments.

[0124] This invention is not limited to the embodiments described above. Any changes in shape or structure shall fall within the protection scope of this invention. The protection scope of this invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of this invention, but all such changes and modifications shall fall within the protection scope of this invention.

Claims

1. A paddy field irrigation and fertilization device, comprising a fertilization pipe, a control module, multiple water level monitoring modules, and multiple water delivery execution units, wherein the control module is connected to the water level monitoring modules and the execution units respectively, the water level monitoring module includes a water level measuring mechanism and an identification module, the water level height measured by the water level measuring mechanism is indicated by different colors displayed by an identification component, and the identification module identifies the colors displayed by the identification component, characterized in that: The overall shape of the marking component is cylindrical. The water level is indicated by the color of the cylindrical marking component (8) that rises and falls synchronously with the water level at the marking window. The extension component on the surface of the marking component (8) unfolds when passing through the marking window to expand the marking area. The water level measuring mechanism is also equipped with a failure detection mechanism to detect whether the water level measuring mechanism has failed.

2. The paddy field irrigation and fertilization equipment as described in claim 1, characterized in that: The water level measuring mechanism also includes a water level measuring component, which includes a partition cylinder (1). A floating platform (3) is provided inside the partition cylinder (1). The floating platform (3) slides vertically inside the partition cylinder (1), and the top of the floating platform (3) is connected to the marker (8) in a transmission connection.

3. The paddy field irrigation and fertilization equipment as described in claim 1, characterized in that: The failure detection mechanism includes a detection unit and a display component (6) that cooperates with the detection unit. The detection unit is set on a floating platform (3). The detection unit floats up and down with the normally operating floating platform (3), and floats with the liquid surface when it is detached from the stuck floating platform (3). After the detection unit is detached from the floating platform (3), the abnormality is displayed through the display component (6).

4. The paddy field irrigation and fertilization equipment as described in claim 3, characterized in that: The detection unit includes at least one of an upper detection unit (4) and a lower detection unit (5), which are respectively disposed above and below the floating platform (3); The upper detection unit (4) and the lower detection unit (5) are respectively connected to the display component (6) via transmission. The display component (6) includes two display units, which correspond to the upper detection unit (4) and the lower detection unit (5) respectively. The display units are fixed on the floating platform (3).

5. The paddy field irrigation and fertilization equipment as described in claim 4, characterized in that: The display unit includes a comparison display (61), which is wrapped around the detection component of the upper detection part (4) or the lower detection part (5), and the display component is fixed on the floating platform (3). The upper detection part (4) and the lower detection part (5) detach from the floating platform (3) and drive their corresponding detection ends to detach from the display component.

6. The paddy field irrigation and fertilization equipment as described in claim 4, characterized in that: The upper detection unit (4) includes an upper floating plate (41), which overlaps the upper surface of the floating platform (3) and is slidably connected to the first guide shaft (42). A first transmission rod (44) is fixed on the upper surface of the upper floating plate (41), and a first detection element (45) is fixed on the top of the first transmission rod (44). The first detection element (45) extends into the comparison display element (61).

7. The paddy field irrigation and fertilization equipment as described in claim 4, characterized in that: The lower detection unit (5) includes a lower float plate (51), which overlaps the lower surface of the float platform (3). A second transmission rod (52) is fixed at the center of the upper surface of the lower float plate (51). The second transmission rod (52) passes through the float platform (3), and a second detection element (53) is fixed at the top of the second transmission rod (52). The second detection element (53) extends into the comparison display element (61).

8. The paddy field irrigation and fertilization equipment as described in claim 1, characterized in that: The marking component also includes an outer shell (7) that is fitted over the marking component (8). The outer shell (7) is cylindrical and has a display slot (72) in the middle area. The height of the outer shell (7) is fixed. The surface of the sign (8) is provided with multiple marking areas formed by painting different colors, and each marking area is provided with at least one extension on both sides of the sign (8).

9. The paddy field irrigation and fertilization equipment as described in claim 8, characterized in that: The extension component is a first extension part (9a), which includes a fixed connecting rod (9a1). The fixed connecting rod (9a1) is fixed to the outer wall of the marker (8) in the horizontal direction, and a first extension plate (9a2) is rotatably connected to the end of the fixed connecting rod (9a1). A first coil spring is provided at the rotatable connection between the first extension plate (9a2) and the fixed connecting rod (9a1).

10. The paddy field irrigation and fertilization equipment as described in claim 8, characterized in that: The extension component is a second extension part (9b), which includes a second extension plate (9b1). The second extension plate (9b1) is rotatably connected to the outer wall of the sign (8), and a second coil spring is provided at the rotatable connection between the second extension plate (9b1) and the outer wall of the sign (8).

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