Adjustable irrigation spray head device suitable for farmland

Abstract

The invention relates to the technical field of irrigation nozzles, in particular to an adjustable irrigation nozzle device suitable for farmland. The device comprises a circulation shell, and two ends of the circulation shell are respectively communicated with a water inlet pipe and a water outlet pipe. The circulating shell is sleeved with an outer shell, and the circulating shell and the outer shell are divided into two independent liquid storage cavities at the side end and the top end. And a water outlet I and a water outlet II corresponding to the two liquid storage cavities are formed in the outer shell. In addition, a communicating hole I and a communicating hole II are formed in the side face and the upper end of the circulation shell and communicate with the side end liquid storage cavity and the top end liquid storage cavity correspondingly. The water spraying position of the device can be adjusted by controlling the opening and closing states of the communicating hole I and the communicating hole II. When only the communicating hole I is opened, the device enters a drip irrigation mode, and water is discharged from the side end; when the communicating hole I and the communicating hole II are opened at the same time, the device executes a sprinkling irrigation mode of side end and top end simultaneous irrigation; and when only the communicating hole II is opened, top irrigation is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of irrigation sprinklers, and particularly to an adjustable irrigation sprinkler device suitable for farmland. Background Art

[0002] In the practice of agricultural production, irrigation technology is a core link to ensure the growth and development of crops and improve agricultural output efficiency. A reasonable irrigation strategy can not only efficiently utilize water resources, but also provide necessary environmental conditions for the healthy growth of crops. However, although the current irrigation sprinkler equipment on the market has made certain progress, there are still limitations and it is difficult to fully meet the diverse and flexible requirements of modern agriculture for irrigation methods.

[0003] Currently, common irrigation sprinkler equipment mainly adopts two single working modes: drip irrigation and sprinkler irrigation. Drip irrigation technology delivers water precisely to the roots of crops by slowly dripping water; while sprinkler irrigation technology evenly covers the water around the crops in the form of spray. Each of these two modes has its own advantages, but the equipment lacks the ability to adjust the irrigation strategy in a timely manner according to crop types, soil and meteorological conditions.

[0004] From the perspective of practical application, the pipeline systems configured in existing equipment are usually fixed. After installation, the irrigation mode and scope are fixed and difficult to adjust flexibly. For example, crops have significantly different water requirements at different growth stages. In the initial growth stage, crops need large-area irrigation, and the sprinkler irrigation mode is more suitable; in the later growth stage, to avoid root hypoxia, the drip irrigation mode is more reasonable. However, due to the fixity of the pipeline system, the conversion of this mode becomes extremely difficult.

[0005] Meteorological conditions significantly affect the irrigation effect. During the dry season, the groundwater level is low and the water pressure is often insufficient. The sprinkler irrigation mode requires sufficient water pressure to effectively spray water in the form of spray. Insufficient water pressure will lead to a significant decline in the sprinkler irrigation effect and even abnormal operation. Therefore, it is quite challenging to adopt the sprinkler irrigation mode during the dry season. It should be noted that the dry season is often accompanied by high temperatures, and plant leaves are thus at risk of excessive water loss and urgently need cooling measures. The sprinkler irrigation mode shows unique utility in this regard.

[0006] The drip irrigation mode and the sprinkler irrigation mode each have irreplaceable advantages. The drip irrigation mode can utilize the hydrotropism of plant roots. By reasonably adjusting the position and frequency of dripping water, it can guide the plant roots to grow towards the water source, thereby optimizing the growth direction of the roots and being beneficial for plants to more effectively absorb nutrients and water. The sprinkler irrigation mode can effectively reduce the temperature of plant leaves in hot weather, avoid excessive water loss of leaves, and reduce the damage caused by high temperature and drought to plants.

[0007] Therefore, due to its fixed working mode and pipeline configuration, the current irrigation sprinkler device is difficult to adapt to the changing meteorological conditions and crop requirements, resulting in the inability to effectively adjust the irrigation strategy, which limits the improvement of irrigation efficiency and crop yield. Therefore, it is of great practical significance to develop an irrigation sprinkler device that can flexibly adjust the irrigation mode and adapt to different conditions. Summary of the Invention

[0008] Aiming at the limitations existing in the prior art, the present invention proposes an adjustable irrigation sprinkler device applicable to farmland. This device has the ability to flexibly adjust the irrigation mode according to actual needs, can make full use of the advantages of different irrigation modes, and effectively overcomes the limitation of the single irrigation mode selection caused by the fixed position of the irrigation pipeline in the prior art.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions: An adjustable irrigation sprinkler device applicable to farmland, including a flow-through housing, an inlet pipe and an outlet pipe are respectively connected to the front and rear ends of the flow-through housing. It also includes an outer housing sleeved outside the flow-through housing, and the outer housing is hermetically connected to the flow-through housing. Moreover, the side end and the upper end of the outer housing are respectively provided with protrusions with a cavity structure inside. A side-end liquid storage cavity is formed between the inner wall of the protrusion on the side end of the outer housing and the flow-through housing, and a top liquid storage cavity is formed between the inner wall of the protrusion on the upper end of the outer housing and the flow-through housing. Each protrusion is provided with a water outlet hole penetrating through the side away from the flow-through housing. Among them, the water outlet hole connected to the side-end liquid storage cavity is the horizontally axially arranged water outlet hole I, and the water outlet hole connected to the top liquid storage cavity is the vertically axially arranged water outlet hole II. A communication hole I connected to the side-end liquid storage cavity is penetrated through the side end of the flow-through housing, and a communication hole II connected to the top liquid storage cavity is penetrated through the upper end of the flow-through housing. The communication hole I and the communication hole II are not in the same vertical plane. And, a limiting plate with an L-shaped vertical section is rotatably connected inside the flow-through housing. A through hole I is opened on the side end of the limiting plate for the communication hole I, and a through hole II is opened on the upper end of the limiting plate for the communication hole II. Each limiting plate is provided with a driving member and a reset member. The limiting plate is made to perform a circular motion around the central axis of the flow-through housing through the driving member. And, when the reset member is not affected by an external force, the communication hole I, the communication hole II, the through hole I and the through hole II are not in the same vertical plane.

[0010] Preferably, each driving member includes a driven plate, and a plurality of flow-through holes with a horizontal central axis are penetrated through the driven plate. The number of the limiting plates is two, and the two limiting plates are symmetrically arranged with the central axis of the flow-through housing as the symmetry line. And, each driven plate is located on the side of the corresponding limiting plate away from the inlet pipe.

[0011] Preferably, a baffle is fixedly connected inside the flow housing. The baffle is located on the side of the flow housing close to the water outlet pipe. Moreover, when the driven plate abuts against the baffle, the projection of the communication hole II on the horizontal plane completely covers the projection of the through hole II on the horizontal plane.

[0012] Preferably, the distance between the communication hole II and the water inlet pipe is greater than the distance between the communication hole I and the water inlet pipe. Moreover, when the through hole I and the communication hole I are in the same vertical plane, the communication hole II and the through hole II are not in the same vertical plane.

[0013] Preferably, a movable limiting member is arranged inside the flow housing. When the driven plate abuts against the movable limiting member, the projection of the communication hole I on the vertical plane completely covers the projection of the through hole I on the vertical plane.

[0014] Preferably, the movable limiting member includes a receiving groove opened on the inner side wall of the flow housing. A compression spring with a horizontal central axis is fixedly connected inside the receiving groove. A follower block is fixedly connected to the side of the compression spring away from the outer housing. The side of the follower block away from the compression spring is a spherical structure. Moreover, when the compression spring is not affected by external forces, the distance between the follower block and the central axis of the flow housing is less than the outer diameter of the limiting plate.

[0015] Preferably, an elastic pad I is fixedly connected to the outer side wall of the limiting plate, and an elastic pad II is fixedly connected to the inner side wall of the flow housing. A plurality of anti-slip grooves are respectively formed through the elastic pad I and the elastic pad II.

[0016] Preferably, the reset member includes a positioning pin I and a positioning pin II in the up-down axial direction. Among them, the positioning pin I is fixedly connected to the flow housing on the side close to the water inlet pipe, and the positioning pin II is fixedly connected to the limiting plate. Moreover, a tension spring is arranged between each positioning pin I and the corresponding positioning pin II. The two axial ends of the tension spring are respectively movably connected to the corresponding positioning pin I and positioning pin II.

[0017] Preferably, the central axis of each water outlet hole is an arc structure. Among them, the height of each water outlet hole I away from the flow housing is greater than the height of its side close to the flow housing, and the distance between the upper end of each water outlet hole II and the central axis of the flow housing is greater than the distance between its lower end and the central axis of the flow housing.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention applies the side-end water outlet irrigation technology (drip irrigation mode) to precisely nourish and guide the development of crop roots. By activating the communication hole I, the liquid is sprayed from the side-end water outlet hole I towards the crop roots, thereby achieving the effect of drip irrigation. This irrigation mode ensures that the water directly reaches the roots, greatly reducing evaporation and waste, and effectively improving the water resource utilization efficiency.

[0019] The present invention combines side-end and top irrigation (sprinkler irrigation mode) to comprehensively cover the crop growth area. When both communication holes Ⅰ and Ⅱ are opened, the sprinkler head performs sprinkler irrigation, evenly covering the entire crop. This mode can provide all-round water supply for the leaves and roots, thereby improving the efficiency of photosynthesis and regulating the field climate.

[0020] The present invention also protects the rhizome health and reduces the leaf temperature through top irrigation technology. By activating communication hole Ⅱ, the liquid is sprayed from the top water outlet hole Ⅱ onto the leaves. This method solves the problems of poor soil air permeability and root hypoxia caused by excessive water in the roots in the traditional sprinkler irrigation mode, maintains the soil air permeability, and creates ideal growth conditions for air-permeability-sensitive crops. At the same time, the sprinkler irrigation for the leaves can also quickly reduce the leaf temperature and avoid leaf inactivation caused by high temperature.

[0021] The present invention realizes efficient prevention and control of pests and diseases through precise pesticide application technology. Medicines are added to the water body, and by adjusting the opening and closing states of communication hole Ⅰ and communication hole Ⅱ, the spraying direction and range of the medicines are controlled, thereby realizing precise pesticide application. This method can implement precise pesticide application strategies for root or leaf diseases, effectively reducing the amount of medicines used, thereby reducing environmental pollution and significantly improving the prevention and control effect of pests and diseases. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the cooperation relationship between the outer shell and the circulation shell of the present invention.

[0024] Figure 3 It is a schematic diagram of the overall structure of the circulation shell of the present invention.

[0025] Figure 4 It is a schematic diagram of the internal structure of the circulation shell of the present invention.

[0026] Figure 5 It is a schematic diagram of the positional relationship between the driving member and the reset member of the present invention.

[0027] Figure 6 It is a schematic diagram of the cooperation relationship between the circulation shell and the reset member of the present invention.

[0028] Figure 7 It is a schematic diagram of the connection relationship between the circulation shell and the limiting member of the present invention.

[0029] Figure 8 It is a schematic diagram of the overall structure of the outer shell of the present invention.

[0030] Figure 9 It is a schematic diagram of the initial position of the limiting plate of the present invention.

[0031] Figure 10 Schematic diagram of the cooperation relationship between the limit plate and the limit member of the present invention.

[0032] Figure 11 Schematic diagram of the cooperation relationship between the limit plate and the baffle of the present invention.

[0033] In the figure: 1, water inlet pipe; 2, flow-through housing; 3, outer housing; 4, water outlet pipe; 5, water outlet hole; 501, water outlet hole I; 502, water outlet hole II; 6, side-end liquid storage cavity; 7, top-end liquid storage cavity; 8, communication hole I; 9, communication hole II; 10, baffle; 11, limit plate; 12, through hole II; 13, reset member; 1301, tension spring; 1302, positioning pin II; 1303, positioning pin I; 14, driving member; 1401, driven plate; 1402, flow-through hole; 15, elastic pad I; 16, anti-slip groove; 17, through hole I; 18, elastic pad II; 19, limit member; 1901, follower block; 1902, receiving groove; 1903, compression spring. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0036] Please refer to Figure 1 , the present invention relates to an adjustable irrigation sprinkler device suitable for farmland. Its structure is similar to that of the prior art device and includes a flow-through housing 2. The flow-through housing 2 has a cavity structure inside. The two ends of the flow-through housing 2 are respectively connected to the water inlet pipe 1 and the water outlet pipe 4 to ensure the smooth flow of water inside the flow-through housing 2. It should be particularly noted that this device is specially designed for farmland irrigation. Multiple flow-through housings 2 can be arranged in sequence along the field ridges. In this context, the water inlet pipe 1 and the water outlet pipe 4 essentially act as the connection bridges between adjacent flow-through housings 2, and their names are only for the convenience of description.

[0037] It should be noted that, as Figure 1 , Figure 3As shown, the arrow directions indicated on the outer sides of the two axial ends of the circulation housing 2 represent the flow path of the water body inside it. By using etching or casting techniques on the outside of the housing, the arrows are additionally marked, which helps with the convenience of actual installation and operation.

[0038] In addition, injection holes are usually provided at the side end or upper end (or both) of the circulation housing 2 of the traditional technical device. When the liquid inside the circulation housing 2 flows smoothly and forms a certain water pressure, the liquid can be ejected from the injection holes by means of pressure to irrigate the crops around the circulation housing 2.

[0039] Please refer to Figure 1 、 Figure 2 , the difference between this device and the existing technical device is that an outer housing 3 is cleverly sleeved outside the circulation housing 2, and the two are closely fitted at the outer ends. In order to ensure the sealing effect, a sealing gasket can also be added at the fitting place in actual application. The side end and the upper end of the outer housing 3 are respectively designed with convex structures. These convexes not only maintain a close fit with the circulation housing 2, but also leave a gap between the rest and the circulation housing 2, thus cleverly forming a liquid storage cavity. As Figure 2 shown, by flexibly adjusting the position of the convexes and the fitting method of the outer housing 3 and the circulation housing 2, we can easily achieve the isolation between the upper end and the inner cavity of the convexes at the side end of the outer housing 3 to ensure that there is no fluid flow between them.

[0040] In addition, please refer to Figure 2 、 Figure 8 , a side-end liquid storage cavity 6 is formed between the inner wall of the convex at the side end of the outer housing 3 and the circulation housing 2 of this device, and a top liquid storage cavity 7 is formed between the inner wall of the convex at the upper end of the outer housing 3 and the circulation housing 2. At the same time, water outlet holes 5 are respectively opened on the side of the convexes away from the circulation housing 2. The left and right axially arranged water outlet holes I 501 are connected to the side-end liquid storage cavity 6, and the up and down axially arranged water outlet holes II 502 are connected to the top liquid storage cavity 7.

[0041] At the same time, a communication hole I 8 connected to the side-end liquid storage cavity 6 is opened at the side end of the circulation housing 2 of this device, and a communication hole II 9 connected to the top liquid storage cavity 7 is opened at the upper end of the circulation housing 2. Therefore, by controlling the opening and closing of the communication hole I 8 and the communication hole II 9, this device can achieve the control of the liquid flow direction, and combined with the shape structure of the outer housing 3, the water outlet direction of this device can be controlled.

[0042] In practical applications, when the communication hole Ⅰ8 is opened, the liquid flows into the side-end liquid storage cavity 6 from the inside of the circulation housing 2. At this time, the liquid is sprayed from the water outlet hole Ⅰ501 to the roots of the crops around the side end of the circulation housing 2. Correspondingly, after the communication hole Ⅱ9 is opened, the liquid flows into the top liquid storage cavity 7 from the inside of the circulation housing 2. Subsequently, these liquids are evenly sprayed onto the crop leaf area at the top of the circulation housing 2 through the water outlet hole Ⅱ502. At the same time, when the communication hole Ⅰ8 and the communication hole Ⅱ9 are opened simultaneously, uniform spraying of the entire crop can be achieved.

[0043] It should be noted that in practical applications, when this device is used to spray liquids containing drugs, by adjusting the opening and closing states of the communication hole Ⅰ8 and the communication hole Ⅱ9, the combination of the drug liquid and the expected crop position can be precisely controlled.

[0044] Furthermore, to adjust the deviation between the position of this device (the device is installed inside the ridge) and the position of the crops, and to ensure that the liquid sprayed by the device can be evenly sprayed on the expected position of the crops, the central axis of each water outlet hole 5 of this device is specified as an arc structure. When designing the water outlet hole Ⅰ501, ensure that the height on the side away from the circulation housing 2 is higher than the side close to it. This design effectively prevents the problem of liquid splashing caused by the depression of the ridge, ensuring that the liquid can accurately reach the roots of the crops. Correspondingly, this device stipulates that the distance between the upper end of each water outlet hole Ⅱ502 and the central axis of the circulation housing 2 is greater than the distance between its lower end and the central axis of the circulation housing 2. This measure can ensure that the liquid ejected from the water outlet hole Ⅱ502 has a certain deviation angle, thus avoiding the liquid falling vertically above the circulation housing 2.

[0045] Please refer to Figures 3 to 7 , in order to adjust the opening and closing states of the communication hole Ⅰ8 and the communication hole Ⅱ9, a rotatable limit plate 11 is installed inside the circulation housing 2, as shown in Figure 4 and Figure 5 . The limit plate 11 is designed as an L-shaped structure and makes a circular motion around the central axis of the circulation housing 2 through a bearing. To adjust the position of the limit plate 11, a driving member 14 and a reset member 13 are equipped on the device.

[0046] In addition, the device also opens a corresponding through hole Ⅰ17 for the communication hole Ⅰ8 at the side end of the limit plate 11, and a corresponding through hole Ⅱ12 for the communication hole Ⅱ9 at the upper end of the limit plate 11. By rotating the limit plate 11, the corresponding relationships between the communication hole Ⅰ8 and the through hole Ⅰ17, and between the communication hole Ⅱ9 and the through hole Ⅱ12 can be changed.

[0047] In actual operation, when the through hole Ⅰ17 and the communication hole Ⅰ8, or the through hole Ⅱ12 and the communication hole Ⅱ9 are not in the same vertical plane, the limiting plate 11 can close the communication hole Ⅰ8 and the communication hole Ⅱ9. Conversely, if the through hole Ⅰ17 and the communication hole Ⅰ8 are in the same vertical plane, or the through hole Ⅱ12 and the communication hole Ⅱ9 are in the same vertical plane, the opening of the communication hole Ⅰ8 or the communication hole Ⅱ9 can be realized.

[0048] Furthermore, the device ensures that the communication hole Ⅰ8 and the communication hole Ⅱ9 are not in the same vertical plane, while the through hole Ⅰ17 and the through hole Ⅱ12 are in the same vertical plane, so as to realize the staggered opening and closing of the communication hole Ⅰ8 and the communication hole Ⅱ9. That is, as the limiting plate 11 rotates, the communication hole Ⅰ8 or the communication hole Ⅱ9 can be opened separately, enhancing the pertinence of irrigation.

[0049] It should be noted that, as Figure 4 shown, there are two limiting plates 11 inside the flow-through housing 2, and these two limiting plates 11 are symmetrically arranged with the central axis of the flow-through housing 2 as the axis of symmetry. Combining the position of the central axis of the flow-through housing 2, the equal distribution of the liquid entering the inside of the flow-through housing 2 from the water inlet pipe 1 can be realized, and it is ensured that these two parts of the liquid continuously flow at both ends of the bearing.

[0050] Therefore, in actual operation, the driving member 14 (including the driven plate 1401) is restricted and the position of the limiting plate 11 is adjusted so that the driven plate 1401 is located on the side of the limiting plate 11 away from the water inlet pipe 1. In this way, when the liquid continuously flows, the flowing liquid and the bearing act together to provide rotational power for the limiting plate 11, making it tend to move in the direction of the water outlet pipe 4.

[0051] Correspondingly, a plurality of flow-through holes 1402 with a horizontal central axis are opened on the driven plate 1401. The design of these flow-through holes 1402 is aimed at ensuring the continuous flow of the liquid and preventing the driven plate 1401 from hindering the smooth flow of the liquid inside the flow-through housing 2. At the same time, the existence of the flow-through holes 1402 enables the size of the driven plate 1401 to match the size of the inner cavity channel of the flow-through housing 2, so that the driven plate 1401 can be stressed as a whole, reducing the frictional loss generated during the rotation of the limiting plate 11.

[0052] Please refer to Figure 5 and Figure 6 , the reset member 13 is composed of a positioning pin Ⅰ1303 and a positioning pin Ⅱ1302. The positioning pin Ⅰ1303 is firmly fixed inside the flow-through housing 2 near one end of the water inlet pipe 1 to ensure stable immobility during use and prevent displacement. The positioning pin Ⅱ1302 is fixedly connected to the limiting plate 11 tightly.

[0053] Between the positioning pin Ⅰ 1303 and the positioning pin Ⅱ 1302, a tension spring 1301 is specially configured. The two ends of the tension spring 1301 are movably connected to the positioning pin Ⅰ 1303 and the positioning pin Ⅱ 1302 respectively. This design enables the tension spring 1301 to cause a relative movement tendency between the positioning pin Ⅰ 1303 and the positioning pin Ⅱ 1302, thereby resisting the thrust exerted by the water flow on the limiting plate 11 and ensuring that the limiting plate 11 can automatically reset after the thrust disappears.

[0054] Further, as shown in Figure 3 , Figure 4 , Figure 9 , when there is no external force acting on the tension spring 1301, the communication hole Ⅰ 8, the communication hole Ⅱ 9, the through hole Ⅰ 17, and the through hole Ⅱ 12 are not coplanar and are in a closed state, effectively blocking foreign matters from the outside and preventing the inner cavity of the flow-through housing 2 from being blocked.

[0055] It should be noted that, as shown in Figure 3 , Figure 4 , Figure 5 , the communication hole Ⅱ 9 is located on the side of the flow-through housing 2 close to the water outlet pipe 4. According to the principle of fluid mechanics, when the water flow velocity inside the flow-through housing 2 increases, the elongation of the tension spring 1301 driven by the limiting plate 11 increases, and the limiting plate 11 is closer to the water outlet pipe 4. This results in an increase in the overlapping area of the horizontal projection of the through hole Ⅱ 12 and the horizontal projection of the corresponding communication hole Ⅱ 9, making it easier for the liquid to spray out from the water outlet hole Ⅱ 502. At the same time, the initial velocity of the liquid spraying out from the water outlet hole Ⅱ 502 increases. According to the calculation formula of the lift H=(p2 - p1) / ρg+(v2² - v1²) / 2g+z2 - z1, where v represents the flow velocity, it can be inferred that the lift of the liquid also increases. The design of this irrigation system fully considers the actual application requirements, can ensure full coverage when irrigating the crop leaves, and avoid duplication with the root irrigation process, thereby improving the water utilization rate and the crop growth efficiency.

[0056] It must be pointed out that in practical applications, the device controls the opening and closing states of the communication hole Ⅰ 8 and the communication hole Ⅱ 9 by adjusting the liquid flow velocity, and this flow velocity adjustment process is linear. To meet the requirements of irrigation accuracy and the positions of specific crops, a movable limiting member 19 and a baffle 10 are built into the flow-through housing 2.

[0057] Please refer to Figure 4 and Figure 11 , the baffle 10 is located inside the flow-through housing 2, on the side close to the water outlet pipe 4. The baffle 10 ensures that the communication hole Ⅱ 9 is fully opened. By the staggered opening and closing of the communication hole Ⅰ 8 and the communication hole Ⅱ 9, the communication hole Ⅱ 9 is opened separately to ensure that the liquid is fully sprayed onto the crop leaves. Therefore, this device stipulates that when the driven plate 1401 contacts the baffle 10, the horizontal projection of the communication hole Ⅱ 9 should completely cover the through hole Ⅱ 12.

[0058] Please refer to Figure 7 and Figure 10 , the movable limiting member 19 can be deformed under a large external force, and the limiting member 19 provides additional resistance for the movement of the limiting plate 11. After the limiting plate 11 overcomes the resistance, the pin mechanism locks to ensure that the communication hole Ⅰ8 remains continuously open.

[0059] In actual operation, assume that the resistance exerted by the tension spring 1301 on the limiting plate 11 is a, the horizontal resistance provided by the limiting member 19 is b, the speed at which the water body overcomes the resistance a and pushes the limiting plate 11 until it contacts the limiting member 19 is c, and the speed at which it overcomes a and b is d. Therefore, in actual operation, when the water flow velocity increases from c to d, the communication hole Ⅰ8 is always in a fully open state, that is, the projection of the communication hole Ⅰ8 in the vertical direction completely covers the projection of the through hole Ⅰ17 in the vertical direction.

[0060] Specifically, the movable limiting member 19 includes a receiving groove 1902 provided on the inner side wall of the flow-through housing 2. A compression spring 1903 with a horizontal central axis is fixedly connected in the receiving groove 1902, and a follower block 1901 is fixedly connected to the side of the compression spring 1903 away from the outer housing 3. In the state where the compression spring 1903 is not stressed, the distance between the follower block 1901 and the central axis of the flow-through housing 2 is smaller than the outer diameter of the limiting plate 11, thereby achieving the purpose of hindering the movement of the limiting plate 11 through the stroke interference between the follower block 1901 and the limiting plate 11.

[0061] In addition, the design of the device makes the end of the follower block 1901 away from the spring spherical. By virtue of the advantages of the spherical structure, the thrust of the limiting plate 11 on the follower block 1901 can be converted into the axial force of the spring, enabling the follower block 1901 to smoothly enter the receiving groove 1902, thereby releasing the resistance limit on the limiting plate 11.

[0062] Similarly, in order to facilitate the adjustment of the opening and closing degrees of the communication hole Ⅰ8 and the communication hole Ⅱ9, an elastic pad Ⅰ15 is fixedly connected to the outer side wall of the limiting plate 11, and an elastic pad Ⅱ18 is fixedly connected to the inner side wall of the flow-through housing 2. A plurality of anti-slip grooves 16 are provided on both the elastic pad Ⅰ15 and the elastic pad Ⅱ18. This design enables the elastic pad Ⅰ15 and the elastic pad Ⅱ18 to be interlocked with each other through the anti-slip grooves 16, resulting in a periodic fluctuation of the resistance received by the limiting plate 11 during sliding, ensuring that the movement trajectory of the limiting plate 11 forms a dot pattern.

[0063] In the actual use process of the present invention: 1. Initial state The sprinkler for irrigation is in a static state. The reset member 13 (tension spring 1301) is not affected by external forces. The communication hole I 8, the communication hole II 9, the through hole I 17, and the through hole II 12 are not in the same vertical plane. At this time, the side liquid storage cavity 6 and the top liquid storage cavity 7 are not connected to the inside of the flow-through housing 2, and no irrigation water is ejected.

[0064] 2. Water inflow and preliminary action Water inflows into the flow-through housing 2: The irrigation water flows from the water inlet pipe 1 into the flow-through housing 2, forming a water flow inside the flow-through housing 2.

[0065] The driven plate 1401 bears the thrust force and the tension spring 1301 deforms: The water flow impacts the driven plate 1401 provided with a plurality of horizontally axially distributed communication holes 1402, thereby generating a thrust force on the driven plate 1401, and then driving the driven plate 1401 and the limit plate 11 to rotate around the central axis of the flow-through housing 2. During the rotation of the limit plate 11, the tension spring 1301 connecting the positioning pin I 1303 and the positioning pin II 1302 begins to deform, generating a tensile force.

[0066] 3. Increase in water flow velocity and side-end water discharge The increase in the water flow velocity causes the tension spring 1301 to deform more severely: As the flow velocity increases, the thrust force of the water flow on the driven plate 1401 increases accordingly, prompting the driven plate 1401 to drive the limit plate 11 to rotate further, and then increasing the deformation degree of the tension spring 1301.

[0067] As the limit plate 11 rotates, the overlapping area of the projections of the communication hole I 8 and the through hole I 17 on the vertical plane gradually expands: The through hole I 17 gradually approaches the communication hole I 8. The increase in the overlapping area enables the water flow to start flowing into the side liquid storage cavity 6 through this area. At this time, the through hole I and the communication hole I 8 have not been fully connected.

[0068] 4. Stage of complete side-end water discharge The driven plate 1401 abuts against the follower block 1901, and the projection of the communication hole I 8 on the vertical plane completely covers the through hole I 17: When the water flow velocity increases to a certain extent, the driven plate 1401 rotates to abut against the follower block 1901 of the movable limit member 19. At the same time, the projection of the communication hole I 8 on the vertical plane completely covers the through hole I 17. The water can smoothly flow into the side liquid storage cavity 6 through the communication hole I 8 and the through hole I 17, and then be ejected from the left and right axially distributed water discharge holes I 501 to achieve lateral irrigation.

[0069] 5. Continuing increase in water flow velocity and transition stage As the water flow velocity continues to increase, the follower block 1901 is under pressure, and the compression spring 1903 is gradually compressed, causing the follower block 1901 to slowly sink into the receiving groove 1902.

[0070] During the process of the follower block 1901 entering the receiving groove 1902, the limiting plate 11 continues to rotate, resulting in a gradual reduction in the overlapping area of the vertical projections of the communication hole Ⅰ8 and the through hole Ⅰ17, while the overlapping area of the horizontal projections of the communication hole Ⅱ9 and the through hole Ⅱ12 gradually increases, prompting the water flow to gradually turn towards the top liquid storage cavity 7.

[0071] 6. Full water discharge stage at the top The limiting plate 11 abuts against the baffle 10, and the horizontal projection of the communication hole Ⅱ9 completely covers the through hole Ⅱ12: When the driven plate 1401 drives the limiting plate 11 to rotate until it abuts against the baffle 10, the horizontal projection of the communication hole Ⅱ9 completely covers the through hole Ⅱ12, and a large amount of water can flow into the top liquid storage cavity 7 through the communication hole Ⅱ9 and the through hole Ⅱ12, and then be ejected from the vertical water outlet hole Ⅱ502 at the top to achieve top irrigation.

[0072] 7. Reset after the water flow decreases or stops When the water flow into the flow-through housing 2 decreases or stops, the elastic force of the tension spring 1301 causes the limiting plate 11 to rotate in the reverse direction and return to the initial position, that is, the state where the communication hole Ⅰ8, the communication hole Ⅱ9 and the through hole Ⅰ17, the through hole Ⅱ12 are not in the same vertical plane, so as to prepare for the next irrigation.

[0073] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable irrigation sprinkler device suitable for farmland, comprising a flow housing (2), wherein the flow housing (2) is connected to a water inlet pipe (1) and a water outlet pipe (4) at the front and rear ends thereof, respectively, and characterized in that: It also comprises an outer shell (3) sleeved on the outside of the circulation shell (2), the outer shell (3) and the circulation shell (2) being sealed and connected, and the side end and the upper end of the outer shell (3) are respectively provided with protrusions with a cavity structure inside, a side end liquid storage cavity (6) is formed between the inner wall of the protrusion at the side end of the outer shell (3) and the circulation shell (2), and a top end liquid storage cavity (7) is formed between the inner wall of the protrusion at the upper end of the outer shell (3) and the circulation shell (2); A water outlet hole (5) is formed through the side of each protrusion away from the circulation shell (2), wherein the water outlet hole (5) connected to the side end liquid storage chamber (6) is a left-right axial water outlet hole I (501), and the water outlet hole (5) connected to the top end liquid storage chamber (7) is a top-bottom axial water outlet hole II (502); The side end of the circulation shell (2) is provided with a connecting hole I (8) connected to the side end liquid storage chamber (6), the upper end of the circulation shell (2) is provided with a connecting hole II (9) connected to the top end liquid storage chamber (7), the connecting hole I (8) and the connecting hole II (9) are not located in the same vertical plane, and a limit plate (11) having a vertical cross section of an L-shaped structure is rotatably connected inside the circulation shell (2), the side end of the limit plate (11) is provided with a through hole I (17) for the connecting hole I (8), and the upper end of the limit plate (11) is provided with a through hole II (12) for the connecting hole II (9); Each of the limit plates (11) is provided with a driving component (14) and a reset component (13), and the limit plate (11) is caused to perform a circular motion around the central axis of the flow shell (2) by means of the driving component (14); and when the reset component (13) is not affected by an external force, the connecting hole I (8), the connecting hole II (9) and the through hole I (17), the through hole II (12) are not located in the same vertical plane.

2. The adjustable irrigation sprinkler device suitable for farmland according to claim 1, characterized in that: Each of the driving components (14) comprises a driven plate (1401), and a plurality of flow holes (1402) with a central axis level are formed through the driven plate (1401); There are two limit plates (11), which are symmetrically arranged with the central axis of the flow shell (2) as a symmetry line, and each driven plate (1401) is located on the side of the corresponding limit plate (11) away from the water inlet pipe (1).

3. The adjustable irrigation sprinkler device suitable for farmland according to claim 2, characterized in that: A baffle (10) is fixedly connected to the inside of the circulation shell (2), and the baffle (10) is located on a side of the circulation shell (2) close to the water outlet pipe (4). When the driven plate (1401) abuts against the baffle (10), the projection of the connecting hole II (9) on the horizontal plane completely covers the projection of the through hole II (12) on the horizontal plane.

4. The adjustable irrigation sprinkler device suitable for farmland according to claim 2, characterized in that: The distance between the connecting hole II (9) and the water inlet pipe (1) is greater than the distance between the connecting hole I (8) and the water inlet pipe (1), and when the through hole I (17) and the connecting hole I (8) are in the same vertical plane, the connecting hole II (9) and the through hole II (12) are not in the same vertical plane.

5. The adjustable irrigation sprinkler device suitable for farmland according to claim 4, characterized in that: A movable limiting component (19) is arranged inside the circulation housing (2); when the driven plate (1401) abuts against the movable limiting component (19), the projection of the connecting hole I (8) on the vertical plane completely covers the projection of the through hole I (17) on the vertical plane.

6. The adjustable irrigation sprinkler device suitable for farmland according to claim 5, characterized in that: The movable limiting component (19) comprises a receiving groove (1902) formed on the inner side wall of the circulation housing (2), a compression spring (1903) with a horizontal central axis fixedly connected inside the receiving groove (1902), and a follower block (1901) fixedly connected on the side of the compression spring (1903) away from the outer housing (3); The side of the follower block (1901) away from the compression spring (1903) is a spherical structure, and when the compression spring (1903) is not affected by external force, the distance between the follower block (1901) and the central axis of the circulation shell (2) is smaller than the outer diameter of the limit plate (11).

7. The adjustable irrigation sprinkler device suitable for farmland according to claim 5, characterized in that: The outer wall of the limit plate (11) is fixedly connected to an elastic pad I (15), and the inner wall of the flow shell (2) is fixedly connected to an elastic pad II (18), and a plurality of anti-slip grooves (16) are provided through the elastic pad I (15) and the elastic pad II (18).

8. The adjustable irrigation sprinkler device suitable for farmland according to claim 1, characterized in that: The reset member (13) comprises a positioning pin I (1303) and a positioning pin II (1302) in the upper and lower axial directions, wherein the positioning pin I (1303) is located on the side of the circulation housing (2) close to the water inlet pipe (1) and is fixedly connected to the circulation housing (2), and the positioning pin II (1302) is fixedly connected to the limit plate (11), and a tension spring (1301) is provided between each positioning pin I (1303) and the corresponding positioning pin II (1302), and the two axial ends of the tension spring (1301) are movably connected to the corresponding positioning pin I (1303) and positioning pin II (1302), respectively.

9. The adjustable irrigation sprinkler device suitable for farmland according to claim 1, characterized in that: The central axis of each of the water outlet holes (5) is an arc-shaped structure, wherein the height of each of the water outlet holes I (501) away from the circulation shell (2) is greater than the height of the side thereof close to the circulation shell (2), and the distance between the upper end of each of the water outlet holes II (502) and the central axis of the circulation shell (2) is greater than the distance between the lower end thereof and the central axis of the circulation shell (2).

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