Jet nozzle for sprinkler irrigation device and corresponding sprinkler irrigation device

Abstract

Disclosed are a jet nozzle for a sprinkler irrigation device and a corresponding sprinkler irrigation device. The jet nozzle comprises: a nozzle body, the nozzle body comprising a water inlet, a water outlet and a flow channel communicated with the water inlet and the water outlet, wherein a water flow entering the flow channel via the water inlet is jetted from the water outlet, and the water outlet is in the shape of a wide upper portion and a narrow lower portion.

Description

Jet nozzles for sprinkler irrigation systems and corresponding sprinkler irrigation systems Cross-references to related applications

[0001] This application claims priority to Chinese Patent Application No. 202520507082.2, filed March 21, 2025, entitled "Jet Nozzle and Sprinkler Irrigation Device Including the Jet Nozzle"; Chinese Patent Application No. 202520569206.X, filed March 28, 2025, entitled "Combined Jet Nozzle for Sprinkler Irrigation Device and Corresponding Sprinkler Irrigation Device"; Chinese Patent Application No. 202520663012.6, filed April 09, 2025, entitled "Sprinkler Head for Sprinkler Irrigation Device and Corresponding Sprinkler Irrigation Device"; and Chinese Patent Application No. 202520711648.3, filed April 15, 2025, entitled "Sprinkler Irrigation Device and Nozzle Assembly Thereof", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of smart irrigation, specifically to a jet nozzle for a sprinkler irrigation device and a corresponding sprinkler irrigation device. Background Technology

[0003] With the increasing demand for smart irrigation in landscaping, gardening, and home gardens, various sprinkler systems have emerged. For example, currently, lawns in home gardens typically use either buried automatic irrigation systems or traditional systems that use water pipes and sprinklers for automatic irrigation. However, buried automatic irrigation systems are costly to construct and complex to install, generally requiring the excavation of the lawn, laying of pipes, and placement of multiple sprinklers on the pipes to ensure complete coverage of the entire lawn. Traditional water pipe and sprinkler systems, on the other hand, have limited coverage areas for individual sprinklers, typically around 100 square meters. To completely cover the entire lawn, individual sprinklers need to be frequently moved, increasing workload and operating costs. Summary of the Invention

[0004] According to one aspect of this disclosure, a jet nozzle for a sprinkler irrigation device is provided, comprising: a nozzle body, the nozzle body including an inlet, an outlet, and a flow channel connecting the inlet and the outlet, wherein water flowing into the flow channel via the inlet is ejected through the outlet; wherein the outlet has a shape that is wider at the top and narrower at the bottom.

[0005] According to at least one embodiment of the present disclosure, the outlet of the jet nozzle has a shape that gradually tapers downward from an arc shape at the top.

[0006] According to at least one embodiment of this disclosure, the lower part of the outlet is shaped like an acute angle.

[0007] According to at least one embodiment of this disclosure, the outlet is shaped like a teardrop.

[0008] According to at least one embodiment of the present disclosure, a guide surface is provided at the lower part of the outlet.

[0009] According to at least one embodiment of this disclosure, the guide surface has a downward tilt angle.

[0010] According to at least one embodiment of the present disclosure, the jet channel includes a first section, a guide section, and a second section arranged sequentially along the water flow direction; wherein the first section is connected to the second section via the guide section, the inlet is disposed on the first section, and the outlet is disposed on the second section.

[0011] According to at least one embodiment of this disclosure, the flow channel shape of the first segment is approximately cylindrical, and the flow channel shape of the guide segment is flared.

[0012] According to at least one embodiment of the present disclosure, in the working state, the water outlet of the jet channel is inclined upward, so that the water flow can be ejected inclined upward.

[0013] According to at least one embodiment of the present disclosure, the jet nozzle further includes: a flow stabilizer disposed within the flow channel, the flow stabilizer having a plurality of first holes along the extension direction of the flow channel, the sum of the opening areas of the plurality of first holes being less than the opening area of ​​the flow channel at the location of the flow stabilizer.

[0014] According to at least one embodiment of the present disclosure, the plurality of first holes include one or more of square holes, circular holes, rectangular holes, and irregularly shaped holes.

[0015] According to at least one embodiment of the present disclosure, the plurality of first holes are arranged in a predetermined manner.

[0016] According to at least one embodiment of this disclosure, the predetermined pattern includes one or more of longitudinal, transverse, honeycomb, and annular patterns.

[0017] According to at least one embodiment of the present disclosure, at least one second hole is formed between the outer wall of the flow stabilizer and the inner wall of the flow channel.

[0018] According to at least one embodiment of the present disclosure, a plurality of the first holes or a plurality of the second holes are uniformly distributed.

[0019] According to at least one embodiment of the present disclosure, a connecting portion is provided at the water inlet end of the flow channel, the flow stabilizer is connected to the connecting portion, and a portion of the outer wall of the flow stabilizer is connected to the inner wall of the flow channel.

[0020] According to at least one embodiment of the present disclosure, the inner diameter of the inlet end of the flow channel is larger than the inner diameter of the outlet end of the flow channel.

[0021] According to at least one embodiment of the present disclosure, the nozzle body is further provided with a retaining wall, which surrounds the outer side of the upper end of the water outlet.

[0022] According to at least one embodiment of the present disclosure, the enclosure wall extends to the lower end of the water outlet, and along the water outlet direction, the extension length of the enclosure wall outside the upper end of the water outlet is greater than the extension length of the enclosure wall outside the lower end of the water outlet.

[0023] According to another aspect of this disclosure, a sprinkler irrigation device is also provided, comprising: a nozzle, the nozzle including a housing, the housing having the aforementioned jet nozzle disposed therein, wherein a through hole is provided on the housing, and water jets from the outlet of the jet nozzle can be ejected through the through hole.

[0024] According to at least one embodiment of the present disclosure, the nozzle further includes a removable nozzle guard covering the through hole.

[0025] According to at least one embodiment of the present disclosure, the nozzle protective cover is detachably connected to the nozzle body and is capable of dispersing the water flow ejected through the outlet.

[0026] According to at least one embodiment of the present disclosure, the nozzle protective cover includes a first end cap, which is sleeved on the outlet of the nozzle body.

[0027] According to at least one embodiment of the present disclosure, the first end cap includes a deformable water flow barrier that is capable of deforming under the impact force of at least a portion of the ejected water flow.

[0028] According to at least one embodiment of this disclosure, the water flow blocking member has a shape that is wider at the top and narrower at the bottom when projected onto the front of the jet nozzle along the flow channel axis.

[0029] According to at least one embodiment of this disclosure, the shape is a triangle or a trapezoid.

[0030] According to at least one embodiment of this disclosure, the water flow blocking member is an elastic member, at least a portion of the ejected water flow contacts the elastic member, and the impact force of the water flow causes the elastic member to deform.

[0031] According to at least one embodiment of this disclosure, the three-dimensional shape of the elastic element is generally pyramidal.

[0032] According to at least one embodiment of this disclosure, the upper part of the nozzle body is provided with a recess, and the root of the pyramid shape can be accommodated in the recess.

[0033] According to at least one embodiment of this disclosure, the first end cap further includes a base, the water flow blocking member is connected to the base, and the first end cap is sleeved on or snapped onto the nozzle body through the base.

[0034] According to at least one embodiment of this disclosure, the water flow blocking member is connected to the base via an arc-shaped connecting portion, wherein the water flow blocking member, the arc-shaped connecting portion, and the base are integrally formed.

[0035] According to at least one embodiment of the present disclosure, the nozzle protective cover further includes a second end cap, wherein the second end cap is sleeved on the outside of the first end cap.

[0036] According to at least one embodiment of the present disclosure, the first end cap is capable of fitting into connection with the second end cap.

[0037] According to at least one embodiment of the present disclosure, the first end cap is provided with an annular boss, and the second end cap is provided with an opening that matches the annular boss, the edge of the opening being fitted with the annular boss.

[0038] According to at least one embodiment of the present disclosure, the second end cap has at least one plug on the side facing the first end cap, and the first end cap has at least one slot that matches the at least one plug. The second end cap and the first end cap are fitted together by inserting the at least one plug into the at least one slot.

[0039] According to at least one embodiment of the present disclosure, the housing of the nozzle is provided with a locking portion at the through hole, and the second end cap engages with the locking portion.

[0040] According to at least one embodiment of the present disclosure, the second end cap is provided with at least one elastic buckle on the side facing the through hole, and the engaging portion includes at least one locking plate provided at the through hole of the housing, wherein the at least one elastic buckle engages with the at least one locking plate.

[0041] According to at least one embodiment of the present disclosure, the above-described sprinkler irrigation device further includes: a main unit, wherein a controller is disposed within the main unit, wherein the controller is configured to control the nozzle to rotate relative to the main unit.

[0042] According to at least one embodiment of the present disclosure, the above-mentioned sprinkler irrigation device further includes: a water jet range adjustment module, which is used to adjust the pitch angle of the nozzle body or the water pressure in the flow channel, thereby changing the water jet range of the nozzle body.

[0043] According to at least one embodiment of the present disclosure, the water jet range adjustment module includes a valve and / or a water pump, the valve and / or water pump being used to adjust the water pressure within the flow channel. Attached Figure Description

[0044] Figure 1 schematically shows a perspective view of a sprinkler irrigation apparatus according to an embodiment of the present disclosure.

[0045] Figure 2 schematically illustrates a nozzle of a sprinkler irrigation apparatus according to an embodiment of the present disclosure.

[0046] Figures 3A-3B schematically show views of the assembly structure of the nozzle guard and the jet nozzle.

[0047] Figures 4A and 4B schematically show views of the first end cap of the nozzle guard.

[0048] Figures 5A and 5B schematically show views of a second end cap that mates with the first end cap shown in Figures 4A-4B.

[0049] Figures 6A-6C schematically show views of the connection structure between the nozzle guard and the housing.

[0050] Figure 7 schematically shows a perspective view of a nozzle body with a first end cap fitted with a nozzle guard according to an embodiment of the present disclosure.

[0051] Figures 8A-8B schematically show side and cross-sectional partial views of the nozzle body with the first end cap fitted with a nozzle guard.

[0052] Figure 9 schematically illustrates the three-dimensional structure of the nozzle body according to an embodiment of the present disclosure.

[0053] Figure 10 shows a partial cross-sectional schematic diagram of the flow channel of a nozzle body according to an embodiment of the present disclosure.

[0054] Figure 11 schematically shows the shape of the outlet of the flow channel of the nozzle body according to an embodiment of the present disclosure.

[0055] Figure 12 is a partial structural schematic diagram of a jet nozzle according to an embodiment of the present disclosure.

[0056] Figure 13 is a schematic cross-sectional view of a jet nozzle according to an embodiment of the present disclosure.

[0057] Figure 14 is a schematic diagram showing the structure of a current stabilizer according to an embodiment of the present disclosure.

[0058] Figure 15 is a schematic cross-sectional view of a partial structure of another jet nozzle according to an embodiment of the present disclosure.

[0059] Figure 16 is a front structural schematic diagram of a jet nozzle according to an embodiment of the present disclosure. Detailed Implementation

[0060] The detailed description that follows, taken in conjunction with the accompanying drawings, is intended as a description of various configurations and not as representing only configurations in which the concepts described herein can be practiced. The detailed description includes specific details and is intended to provide a thorough understanding of the various concepts. However, it will be apparent to those skilled in the art that these concepts can be practiced without these specific details.

[0061] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure.

[0062] Furthermore, terms such as "first," "second," and "third," which relate to sequence, are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with terms such as "first," "second," and "third," which relate to sequence, may explicitly or implicitly include at least one of those features. In the description of this disclosure, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0063] Furthermore, dimensions may be exaggerated in the accompanying drawings for clarity and are not drawn to scale. Throughout the drawings, the same reference numerals generally refer to the same elements.

[0064] Figure 1 schematically illustrates a perspective view of a sprinkler irrigation device according to an embodiment of the present disclosure. As shown in Figure 1, the sprinkler irrigation device 10 includes a main unit 100, a nozzle 110 disposed on the upper part of the main unit 100, a mounting assembly 120 disposed on the lower part of the main unit, and a water inlet pipe 130. Water can be supplied to the nozzle 110 through the water inlet pipe 130, and the sprinkler irrigation device 10 can be installed and fixed by the mounting assembly 120. According to at least one embodiment of the present disclosure, the nozzle 110 can rotate relative to the main unit 100. As an example, the main unit 100 of the sprinkler irrigation device 10 can be equipped with mechanisms such as a drive motor and transmission gears. The drive motor drives the transmission gears to rotate the nozzle, thereby achieving multi-directional spraying. In addition, the main unit 100 of the sprinkler irrigation device 10 can also be equipped with components such as a water pump and a controller, thereby enabling control of the pressure and / or flow rate of the sprayed water.

[0065] As an example, as further shown in Figure 1, the sprinkler head 110 includes a jet nozzle 140 through which water can be sprayed to irrigate objects such as lawns and trees.

[0066] The structure of the nozzle according to the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings.

[0067] Figure 2 schematically illustrates a nozzle according to an embodiment of the present disclosure. As shown in Figure 2, the nozzle 110 includes a jet nozzle 210, a removable nozzle guard 220, and a housing 230 that can accommodate at least a portion of the jet nozzle 210 to protect the jet nozzle.

[0068] According to an embodiment of this disclosure, the nozzle housing is provided with a through hole, through which water jets from the outlet of the jet nozzle can be ejected. As an example, a nozzle protective cover is disposed at the through hole and detachably connected to the through hole. The nozzle protective cover can disperse the water jets ejected from the outlet of the jet nozzle, making the sprayed area more dispersed and uniform.

[0069] Figures 3A and 3B schematically show a perspective view and a side view of a nozzle protective cover installed on a jet nozzle, respectively. As shown in Figures 3A-3B, a nozzle protective cover 220 is installed on the jet nozzle 210. The jet nozzle 210 includes an inlet 2110, an outlet 2120, and a flow channel connecting the inlet 2110 and the outlet 2120. Water entering the flow channel through the inlet 2110 is ejected outward through the outlet 2120. As shown in Figure 3A, the nozzle protective cover 220 is located at the outlet 2120.

[0070] As shown in Figures 3A-3B, a nozzle protective cover 220 is disposed at and detachably connected to the water outlet 2120. As an example, the nozzle protective cover 220 can disperse the water flow ejected from the water outlet 2120. For instance, when the water flow ejected from the water outlet is blocked by at least a portion of the nozzle protective cover, the water flow is dispersed, resulting in a more dispersed and uniform spray coverage area.

[0071] Figures 3A-3B further schematically show that the nozzle protective cover 220 may include a first end cover 2210 and a second end cover 2220, wherein the second end cover 2220 is sleeved on the outside of the first end cover 2210, and the first end cover 2210 is sleeved at the outlet 2120 of the jet nozzle.

[0072] As an example, the second end cap 2220 can be fitted onto the first end cap 2210, and the nozzle guard cap 220 can be detachably installed at the outlet 2120 of the jet nozzle 210 via the first end cap 2210.

[0073] As examples, Figures 4A and 4B schematically show a perspective view and a front view of the first end cap included in the nozzle protective cover, respectively. As shown in Figures 4A-4B, an annular boss 2230 is provided on the first end cap 2210. By providing an annular boss on the first end cap as a structure for connecting with the second end cap, it is easy to fit the second end cap onto the first end cap for a detachable connection.

[0074] According to embodiments of this disclosure, as shown in Figures 4A-4B, a water flow blocking member 2240 is further provided on the first end cap 2210. The water flow blocking member 2240 is deformable under the impact force of at least a portion of the water flow ejected from the jet nozzle. For sprinkler irrigation devices, the maximum spray range and spray uniformity achievable under certain water pressure and flow rate are important performance indicators, and these are closely related to the nozzle of the sprinkler irrigation device. According to embodiments of this disclosure, the sprinkler irrigation device, by having an elastic member acting as a water flow blocking member elastically deform under the impact force of the ejected water flow, can easily and effectively adjust the range of the ejected water flow. As an example, the water flow blocking member 2240 can be an elastic baffle. For instance, when the jet nozzle ejects water through the outlet, at least a portion of the ejected water flow can contact the water flow blocking member, and the impact force of the water flow can cause the water flow blocking member to deform; wherein the degree of deformation is related to the magnitude of the impact force of the water flow. As an example, when the impact force of the water flow is greater, for example, when the flow velocity / flow rate of the water flow ejected through the outlet is higher, the water flow blocking member 2240 shown in Figures 4A-4B deforms more and flips outward toward the direction away from the outlet, so that the water flow ejected from the outlet is less obstructed, thereby being able to spray to a greater distance and form a larger sprinkler coverage area; conversely, when the impact force of the water flow decreases, the water flow blocking member 2240 shown in Figures 4A-4B deforms less and elastically returns to its original position toward the direction closer to the outlet, which can disperse the water flow ejected from the outlet, thereby enabling the sprayed water flow to form a short-range sprinkler coverage area.

[0075] As shown in Figures 4A-4B, the upper part of the water flow blocking member 2240 is connected to the upper part of the first end cap 2210 through an arc-shaped connecting part 2260.

[0076] As an example, the water flow blocking component 2240, the first end cap 2210, and the arc-shaped connecting part 2260 can be integrally molded, thereby reducing manufacturing costs and simplifying the installation process.

[0077] As further shown in Figure 4B, the frontal projection of the water flow obstruction 2240 along the flow channel axis of the jet nozzle has a shape that is wider at the top and narrower at the bottom. As an example, Figure 4B schematically shows that the frontal projection of the water flow obstruction 2240 along the axial direction of the jet flow channel presents a triangular shape.

[0078] However, based on the principles of this disclosure, the frontal projection of the water flow blocking member along the axial direction of the jet channel can also present other shapes that are wider at the top and narrower at the bottom, such as an inverted trapezoidal shape, without limitation.

[0079] As examples, Figures 5A and 5B schematically show front and rear views of a second end cap that mates with the first end cap shown in Figures 4A-4B, respectively.

[0080] As shown in Figure 5A, the second end cover 2220 is provided with an opening 2270 that matches the annular boss 2230 provided on the first end cover 2210. Thus, the second end cover 2220 can be detachably connected to the first end cover 2210 by engaging with the annular boss through the edge of the opening 2270.

[0081] Furthermore, as shown in FIG5B, at least one connector 2296 is provided on the side of the second end cap 2220 facing the first end cap. Additionally, as shown in FIG4A-4B, at least one slot 2250 is provided on the first end cap 2210 that mates with at least one connector 2296, and the second end cap 2220 and the first end cap 2210 can be engaged by inserting at least one connector 2296 into at least one slot 2250.

[0082] As described above, the nozzle may include a housing for accommodating at least a portion of the jet nozzle in order to protect the jet nozzle.

[0083] Figure 6A schematically shows a view of the jet nozzle disposed within the housing. As shown in Figure 6A, the jet nozzle 210 is disposed inside the housing 230 and a nozzle protective cover 220 is provided on the housing. For clarity, other components disposed within the housing are omitted.

[0084] As an example, as shown in Figures 6B-6C, a through hole 2310 is provided on the side of the housing 230, and the nozzle protective cover 220 can be placed on the through hole 2310 of the housing 230.

[0085] As an example, referring to Figures 5A-5B, at least one snap fastener can be provided on the side of the through hole 2310 on the side of the second end cap 2220 of the nozzle protective cover 220 facing the housing 230. For example, the snap fastener 2280 shown in Figure 5A detachably connects the end cap to the housing by snap fastening.

[0086] As an example, the buckle can be a flexible buckle.

[0087] According to embodiments of this disclosure, a locking portion may be provided at the through hole 2310 of the housing for detachable connection with the second end cap of the nozzle protective cover. As an example, FIG6C schematically illustrates the connection relationship between the nozzle protective cover 220 and the housing 230.

[0088] As shown in FIG6C, the engaging portion may include at least one locking plate 2290 disposed on the inner side of the housing 230 near the through hole 2310, such that the second end cap 2220 of the nozzle protective cover 220 can be covered on the through hole 2310 of the housing by engaging with at least one locking plate 2290 disposed on the housing through at least one elastic buckle 2280.

[0089] Furthermore, as an example, as shown in FIG5B, a buckle 2292 can be provided on the side of the second end cap 2220 of the nozzle protective cover 220 facing the side opening of the housing 230, so that when the end cap 2220 covers the opening on the housing, as shown in FIG6B-6C, the buckle 2292 can engage with the edge 2294 of the through hole 2310 provided on the housing, so as to increase the connection stability between the end cap 2220 and the housing 230. In this case, the edge 2294 of the through hole 2310 engaging with the buckle 2292 can also be regarded as an engaging part provided on the housing 230 for engaging with the second end cap 2220.

[0090] According to the embodiments of the sprinkler device of this disclosure, the nozzle of the spray nozzle can be easily and effectively adjusted by providing a nozzle protective cover for the jet nozzle and utilizing the elastic deformation of the water flow blocking member of the nozzle protective cover under the impact force of the jet water flow. For example, when the flow rate of the jet water flow is higher, its water flow impact force is greater, the deformation degree of the water flow blocking member is greater, and it flips outward in the direction away from the water outlet, so that the water flow ejected from the water outlet is less obstructed, thereby being able to spray to a farther distance and form a larger sprinkler coverage area; conversely, when the water flow rate decreases, its impact force decreases, the deformation degree of the water flow blocking member decreases, and it elastically returns to its original position in the direction closer to the water outlet, thereby effectively dispersing the jet water flow at close range, so that the jet water flow can form a close-range sprinkler coverage area.

[0091] For example, with a maximum jet flow rate of approximately 20 L / min, the jet flow rate can be adjusted from a distance of 1 meter to a maximum range of 14 meters when the jet flow rate changes. This can significantly improve the uniformity of the spray coverage without affecting the maximum range.

[0092] In addition, the nozzle protective cover is designed to be detachable, which facilitates its installation, maintenance and replacement.

[0093] Figure 7 schematically shows a perspective view of a nozzle body with a first end cap fitted with a nozzle guard cap according to an embodiment of the present disclosure. As shown in Figure 7, the first end cap of the nozzle guard cap is sleeved or snapped onto the jet nozzle body 210 via a base 280. As described above, the first end cap has a water flow blocking member. As an example, the water flow blocking member may be an elastic member 270 that can change its deformation degree with the change of the flow rate of the ejected water.

[0094] According to an embodiment of this disclosure, when the jet nozzle sprays water through the outlet, at least a portion of the ejected water can come into contact with the elastic element, and the impact force of the water can cause the elastic element to deform; wherein, the degree of deformation is related to the magnitude of the impact force of the water.

[0095] As schematically shown in Figure 7, the upper part of the elastic member 270, which serves as a water flow obstruction, is connected to the upper part of the base 280 via an arc-shaped connecting portion. As an example, the elastic member and the base can be integrally molded to facilitate the manufacture and installation of the first end cap of the nozzle protective cover.

[0096] As an example, the elastic element can be made of a soft rubber material. For example, the materials for the elastic element include, but are not limited to, rubber, thermoplastic elastomers (TPE), and TPU.

[0097] According to embodiments of this disclosure, the three-dimensional shape of the elastic element is generally pyramidal. As an example, the pyramidal shape may include, but is not limited to, a triangular pyramid or a square pyramid. For example, as shown in Figures 4A and 7, the elastic element may generally have a three-dimensional shape of a square pyramid, which may include two top surfaces that are not on the same plane and two side surfaces that are inclined at a certain angle to the two top surfaces.

[0098] Figure 8A schematically shows a side view of the jet nozzle body with the first end cap fitted with a nozzle guard. As an example, Figure 8A shows the elastic member 270, which acts as a water flow obstruction, in an outwardly open state.

[0099] Figure 8B schematically shows a cross-sectional view of the jet nozzle body with the first end cap fitted with a nozzle guard. As an example, Figure 8B shows the elastic member 270, which acts as a water flow obstruction, in its elastically reset state.

[0100] According to embodiments of this disclosure, as shown in Figures 8A-8B, the jet nozzle 210 is installed such that the water outlet direction is tilted upwards during operation, allowing the water flow to be ejected at an upward angle. This arrangement results in a larger spray range.

[0101] Figure 9 schematically illustrates the three-dimensional structure of the nozzle body according to an embodiment of the present disclosure. As shown in Figure 9, an inlet 220 is provided at one end of the jet nozzle body 210, and an outlet 230 is provided at the other end, forming a jet flow channel for water flow between the inlet and the outlet. Furthermore, as shown in Figure 9, a recess 290 is provided on the upper part of the nozzle body 210, such that when the nozzle protective cover is installed on the jet nozzle, the pyramidal root of the elastic member serving as a water flow blocking member can be accommodated in the recess 290, facilitating the positioning and installation of the nozzle accessory.

[0102] As an example, FIG10 shows a cross-sectional schematic diagram of the jet flow channel of a jet nozzle according to an embodiment of the present disclosure. As shown in FIG10, the jet flow channel 30 has an inlet 310 and an outlet 320, and the jetted water flows through the inlet 310 toward the outlet 320.

[0103] According to an embodiment of this disclosure, the jet flow channel of the jet nozzle includes a first section, a guide section, and a second section arranged sequentially along the water flow direction; wherein the first section is connected to the second section via the guide section.

[0104] For example, as shown in Figure 10, the jet channel includes a first section 340, a guide section 350, and a second section 360 arranged sequentially along the water flow direction; wherein, the first section 340 is connected to the second section 360 via the guide section 350.

[0105] As an example, as further shown in Figure 10, in the above-mentioned jet nozzle, the outlet 320 is provided on the second section 360, the flow channel shape of the first section 340 is close to cylindrical, and the flow channel shape of the guide section 350 is trumpet-shaped.

[0106] As an example, as shown in Figure 10, in the above-mentioned jet nozzle, the diameter of the guide section 350 gradually decreases along the direction of water flow.

[0107] Although the jet channel, as illustrated in the example above, includes a first section, a second section, and a third section arranged sequentially along the direction of water flow, the number and shape of the segmented channels are not limited to this, depending on specific design requirements and the size of the jet nozzle.

[0108] Figure 11 schematically illustrates the shape of the outlet of the jet channel of the jet nozzle according to an embodiment of the present disclosure. As shown in Figure 11, the outlet of the jet channel has a shape that is wider at the top and narrower at the bottom.

[0109] According to an embodiment of this disclosure, as shown in FIG11, the outlet of the jet channel has a shape that gradually tapers downward from the upper arc.

[0110] According to the embodiments of this disclosure, the outlet shape of the jet channel is a composite shape, that is, it is a shape that gradually tapers downward from the upper arc shape. The upper arc shape can be used to increase the spraying distance of the jet nozzle, that is, to increase the spraying range of the jet nozzle. The gradually tapering shape at the bottom can make the jet nozzle spray more evenly at both near and far distances, that is, to improve the spraying uniformity.

[0111] As an example, as shown in Figure 11, in the above-mentioned jet nozzle, the shape is formed by the arc 440 with two ends forming an arc-shaped sharp angle 470 along two trajectories 450 and 460 with an acute angle between them.

[0112] As an example, the lower part of the outlet has an acute angle shape.

[0113] As an example, the outlet is shaped like a teardrop.

[0114] Furthermore, according to an embodiment of this disclosure, as further shown in FIG11, in the above-mentioned jet nozzle, a guide surface 330 is provided at the lower part of the outlet of the jet channel.

[0115] As an example, as shown in Figure 10-11, the guide surface 330 can have a downward tilt angle.

[0116] According to embodiments of this disclosure, for example, as shown in Figures 8A-8B, in the working state, the water outlet of the jet channel of the nozzle body is tilted upward, so that the water flow can be ejected at an upward angle. This arrangement allows for a larger spray range.

[0117] Because a guide surface is provided at the lower part of the outlet of the jet channel, and the guide surface includes a downward tilt angle, the spray range of the jet nozzle can more easily cover the close distance when spraying water, reducing the spray blind zone and enabling better spraying of objects in the close range, thereby making the entire jet surface evenly dispersed and improving the spray uniformity.

[0118] The sprinkler irrigation device including the aforementioned jet nozzle, as proposed in the embodiments of this disclosure, not only achieves a long spray range but also improves the uniformity of the spray coverage. For example, under a household tap water pressure of 0.25-0.3 MPa, with an input water flow rate of 22L-40L, its spray range reaches 14.5 meters; and when the installation height of the sprinkler irrigation device is 0.3 meters, its blind zone distance is less than 1 meter, and the uniformity within the spray range reaches 60%-70%, which is higher than the current level in the same industry.

[0119] Therefore, according to the embodiments of the present disclosure, the jet nozzle has a composite shape at the outlet of its jet channel, that is, it has a shape that gradually tapers downward from the upper arc. This allows the upper arc to be used to increase the spraying distance of the jet nozzle, that is, to increase the spraying range of the jet nozzle. The gradually tapering shape at the bottom allows the jet nozzle to spray more evenly at both near and far distances, that is, to improve the spraying uniformity.

[0120] Furthermore, because a guide surface is provided at the lower part of the outlet of the jet channel, and the guide surface includes a downward tilt angle, the spray range of the jet nozzle is more likely to cover the close distance when spraying water, thereby making the entire jet surface evenly dispersed, reducing the spray blind zone, and enabling better spraying of objects within the close range.

[0121] Figure 12 schematically illustrates a partial structure of the jet nozzle body according to an embodiment of the present disclosure. As shown in Figure 12, a flow stabilizer 1200 is provided in the flow channel of the jet nozzle (e.g., at the inlet of the flow channel). As shown in Figure 12, the flow stabilizer 1200 has a plurality of first holes 1210 along the through direction of the flow channel. The plurality of first holes 1210 communicate with the flow channel, and the sum of the opening areas of the plurality of first holes 1210 is less than the opening area of ​​the flow channel at the location of the flow stabilizer 1200.

[0122] According to embodiments of this disclosure, a flow stabilizer is disposed within the flow channel of the nozzle body, and multiple first holes of the flow stabilizer are connected to the flow channel. When water flows within the flow channel, it can pass through multiple first holes, and the sum of the opening areas of the multiple first holes is less than the opening area of ​​the flow channel at the location of the flow stabilizer. The flow stabilizer can generate a certain flow resistance to the water flow, thereby slowing down the flow velocity, reducing the impact and turbulence of the water flow, and improving the stability and continuity of the water flow, thereby improving the water outlet stability of the nozzle assembly and the spraying effect of the irrigation device.

[0123] As an example, water can be driven by components such as a water pump installed in the main unit of the sprinkler system to enter the flow channel of the jet nozzle through the inlet and spray it outward through the outlet to achieve sprinkler irrigation for lawns, trees, etc.

[0124] As another example, the inlet of the jet nozzle can be connected to a municipal water pipe, thereby allowing water from the municipal water pipe to enter the flow channel of the jet nozzle. It should be noted that the method of guiding the water flow in this application is only required to ensure that the water flows sequentially through the inlet, flow channel, and outlet; no specific limitation is made here.

[0125] As shown in Figure 12, the flow stabilizer 1200 is located at the inlet of the jet nozzle, and the multiple first holes 1210 of the flow stabilizer 1200 are connected to the flow channel, so that the water can pass through the multiple first holes 1210 when it flows in the flow channel.

[0126] Because there is a wall between two adjacent first holes 1210, and there may be a certain gap or distance between the first hole 1210 and the flow channel, the sum of the opening areas of the multiple first holes 1210 is less than the opening area of ​​the flow channel at the location of the flow stabilizer 1200. Setting the opening area of ​​the multiple first holes 1210 to be smaller than the opening area of ​​the flow channel at the location of the flow stabilizer 1200 can enable the flow stabilizer 1200 to form a certain flow resistance on the water flow in the flow channel, thereby slowing down the water flow velocity, reducing the impact and turbulence of the water flow, improving the stability and continuity of the water flow, and thus improving the water outlet stability of the jet nozzle and the spraying effect of the sprinkler irrigation device.

[0127] Furthermore, the flow stabilizer 1200 can "divide" the water flow in the channel into multiple sub-flows through multiple first holes 1210, so that the water flow can be distributed into multiple first holes 1210 when passing through the flow stabilizer 1200. This reduces the phenomenon of uneven water flow velocity and pressure caused by excessively fast or slow local flow velocity, improves the uniformity of water flow velocity and pressure in multiple first holes 1210, and thus improves the spraying effect of the sprinkler irrigation device.

[0128] As shown in Figure 13, the first hole 1210 can have a predetermined length along the flow direction of the water in the channel 1110. In other words, one or more of the plurality of first holes 1210 have a certain length along the axial direction of the channel 1110. This allows the water to maintain its flow state along the through direction of the first hole 1210 when passing through it, improving the flow stability of the water and further enhancing the flow stabilizing effect of the flow stabilizer 1200. It should be noted that the predetermined length of the first hole 1210 in this application can be set according to parameters such as the inner diameter of the channel 1110 and the maximum allowable flow velocity in the channel 1110, as long as the effect of improving the flow stability of the water can be achieved, and no specific limitation is made here.

[0129] For example, the plurality of first holes 1210 may include one or more of square holes, circular holes, rectangular holes, and irregular holes. The shape of the irregular hole may also be one or more of rhombus, parallelogram, trapezoid, triangle, sector, polygon (with five or more sides) and other irregular shapes.

[0130] For example, as shown in Figures 12 and 14, the plurality of first holes 1210 include square holes and irregular holes.

[0131] It should be noted that the shape of the first hole 1210 in this application can be set according to the actual shape of the flow channel 1110 or the flow stabilizer 1200, or according to the actual flow state and flow stabilization requirements of the water flow in the flow channel 1110. As long as the flow of water in the flow channel 1110 can be stabilized, no specific limitation is made here.

[0132] For example, a plurality of first holes 1210 are arranged in a predetermined manner.

[0133] For example, the pre-defined pattern may include one or more of the following: longitudinal, transverse, honeycomb, and annular.

[0134] Different arrangements of the multiple first holes 1210 (such as longitudinal, transverse, honeycomb, and annular) can adapt to different flow states of water within the flow channel 1110, thus accommodating jet nozzles in different application scenarios. Furthermore, the different arrangements of the multiple first holes 1210 impose different requirements on the fabrication process of the flow stabilizer 1200. It is understood that in this application, the arrangement of the multiple first holes 1210 can be set according to the actual application scenario and fabrication process requirements of the jet nozzle, and is not specifically limited here.

[0135] The multiple first holes 1210 can be evenly distributed. This allows the water flow to be evenly "divided" as it passes through the flow stabilizer 200, improving the uniformity of water flow distribution within the flow channel 1110, reducing the occurrence of concentrated water flow within the flow channel 1110, thereby improving the spray uniformity of the jet nozzle outlet and enhancing the spraying effect. The term "uniform distribution" can refer to the multiple first holes 1210 being evenly distributed in the longitudinal direction of the cross-section of the flow stabilizer 1200, or evenly distributed in the transverse direction of the cross-section of the flow stabilizer 1200, or evenly distributed across the cross-section of the flow stabilizer 1200. For example, the uniform distribution can mean that the spacing between two adjacent first holes 1210 is the same, or that the multiple first holes 1210 are arranged in a predetermined structure. For example, the plurality of first holes 1210 can be evenly distributed in a grid (e.g., a 3x3 grid or a 6x6 grid); the plurality of first holes 1210 can be distributed in a ring or circle, radially from the center, or evenly distributed in area, etc.

[0136] For example, as shown in FIG12, at least one second hole 1220 is formed between the outer wall of the flow stabilizer 1200 and the inner wall of the flow channel.

[0137] For example, a flow stabilizer 1200 is disposed within a flow channel 1110, and one or more second holes 1220 are formed between the outer wall of the flow stabilizer 1200 and the inner wall of the flow channel 1110. Water flowing within the second holes 1220 can still continuously flow along the inner wall of the flow channel 1110. Therefore, the one or more second holes 1220 can also, to a certain extent, play the role of "dividing" and stabilizing the water flow as described above by the first hole 1210. Furthermore, since the second holes 1220 are disposed between the outer wall of the flow stabilizer 1200 and the inner wall of the flow channel 1110, the second holes 1220 can also reduce the energy loss of some water flowing within the flow channel 1110 at the flow stabilizer 1200 (e.g., at the hole wall between two adjacent first holes 1210). This improves both the stability and efficiency of the water flow, thereby enhancing the spraying effect of the jet nozzle.

[0138] There can be multiple second holes 1220, which can be arranged circumferentially along the flow channel 1110. For example, as shown in Figure 12, the flow stabilizer 1200 has multiple first holes 1210 and multiple second holes 1220. Arranging multiple second holes 1220 circumferentially along the flow channel 1110 allows a portion of the water flow in the flow channel 1110 (not the water flow affected by the first holes 1210 of the flow stabilizer 1200) to be evenly distributed to each second hole 1220 along the circumferential direction of the flow channel 1110. This facilitates the flow stabilization effect of each second hole 1220 on the water flow and further prevents uneven flow velocity and pressure in different regions of the flow channel 1110 in the radial direction.

[0139] When there are multiple second holes 1220, they can also be evenly distributed. This improves the uniformity of water flow along the inner wall of the flow channel 1110, reduces the occurrence of concentrated water flow within the flow channel 1110, and thus improves the spray uniformity of the jet nozzle outlet, thereby enhancing the spraying effect. As an example, the uniform distribution of the multiple second holes 1220 can include a grid-like uniform distribution, a circumferential uniform distribution, etc.

[0140] Figure 15 schematically illustrates a partial cross-sectional structure of a jet nozzle according to an embodiment of the present disclosure. As shown in Figure 15, the inlet end 1511 of the flow channel is provided with a connecting portion 1513, which is connected to the inlet end 1511 (for example, connected to the inner wall of the flow channel 1110 where the inlet end 1511 is located). A flow stabilizer (not shown) is connected to the connecting portion 1513, and a portion of the outer wall of the flow stabilizer is connected to the inner wall of the flow channel 1110. In this way, the flow stabilizer can be disposed within the flow channel 1110.

[0141] For example, as shown in Figure 12, a portion of the outer wall of the flow stabilizer 1200 can be connected to the inner wall of the flow channel, and another portion of the outer wall of the flow stabilizer 1200 can form a second hole 1220 with the inner wall of the flow channel.

[0142] The connecting part 1513 may be provided with one of the matching grooves or protrusions, and the outer wall of the flow stabilizer may be provided with the other of the matching grooves or protrusions. The grooves and protrusions are connected so that the flow stabilizer can be installed in the flow channel 1110.

[0143] As an example, the flow stabilizer is provided at the water inlet 1511 of the flow channel via the connection 1513; or, the flow stabilizer may also be installed in the middle of the flow channel 1110.

[0144] As an example, the flow stabilizer can also be integrally molded with the jet nozzle.

[0145] For example, as shown in Figure 15, the inner diameter of the inlet end 1511 of the flow channel can be larger than the inner diameter of the outlet end 1512 of the flow channel. This can increase the flow velocity at the outlet end 1512 of the flow channel, increase the range of the jet nozzle, and improve the spraying effect of the jet nozzle.

[0146] Furthermore, along the direction from the inlet end 1511 to the outlet end 1512 of the flow channel, the inner diameter of part or all of the flow channel 1110 gradually decreases along the flow direction of the flow channel 1110. The edge of the radial section of the flow channel 1110 can be a straight line or a curve. As shown in Figure 15, the flow channel 1110 may include multiple flow channel segments, and the inner diameter of some of the multiple flow channel segments can gradually decrease, and the rate of decrease of the inner diameter of at least two flow channel segments is different. The gradual decrease of the inner diameter of some or all of the flow channel segments along the flow direction of the flow channel 1110 can, on the one hand, increase the flow velocity of the water in the flow channel 1110, and on the other hand, ensure that the increase in the flow velocity is a smooth process.

[0147] It should be noted that the above-described configuration of the flow channel 1110 is merely exemplary. Those skilled in the art can configure the flow channel 1110 according to the specific spraying requirements of the jet nozzle, and no specific limitations are made here.

[0148] As an example, Figure 16 schematically shows a partial front view of the outlet end of a jet nozzle according to an embodiment of the present disclosure. As shown in Figures 15 and 16, the jet nozzle may also have a retaining wall 430 at the outlet 320, which surrounds the outer side of the upper end of the outlet 320.

[0149] In actual use, the outlet 320 of the jet nozzle body 1100 can be tilted upwards, for example, as shown in Figures 8A-8B, to increase the range of the jet nozzle. The enclosure wall 430 is set outside the upper end of the outlet 320 to guide the water flow sprayed from the upper end of the outlet 320, reducing the possibility of the water flow tilting upwards at an excessive angle, which would reduce the spray range and improve the reliability and stability of the jet nozzle operation.

[0150] As an example, the outlet 320 can extend vertically so that the water flow from the outlet 320 can form a jet surface similar to a "water curtain" in the vertical plane, thereby improving the spraying effect of the jet nozzle.

[0151] According to an embodiment of this disclosure, the enclosure wall 430 may extend to the lower end of the water outlet 320. In this way, the enclosure wall 430 can guide the water outlet 320 in the horizontal direction, improving the concentration of the water flow in the longitudinal plane, thereby further enhancing the spray range and spraying effect.

[0152] As an example, along the water outlet direction of the outlet 320, the extension length of the outer side of the upper end of the outlet 320 is greater than the extension length of the outer side of the lower end of the outlet 320.

[0153] For example, as shown in Figure 15, along the direction from the upper end of the outlet 320 to the lower end of the outlet 320, the extension length of part or all of the enclosure wall 430 gradually decreases.

[0154] As an example, as shown in Figure 16, the cross-section of the outlet 320 is wider at the top and narrower at the bottom. This results in a greater water flow rate at the upper end of the outlet 320 than at the lower end, and a greater water jet range at the upper end of the outlet 320 than at the lower end, thereby further improving the uniformity of the water flow sprayed in the longitudinal plane and enhancing the spraying effect of the jet nozzle.

[0155] As an example, the outlet 320 can have a shape that gradually tapers from the upper end to the lower end. This can increase the spray range of the jet nozzle by using the arc shape at the upper end of the outlet 320, while the gradually tapering shape at the lower end of the outlet 320 can improve the uniformity of spraying.

[0156] As an example, the shape of the outlet 320 is formed by two arc-shaped ends forming a curved sharp angle along two trajectories with an acute angle between them. For example, the lower part of the outlet 320 has an acute angle shape.

[0157] As an example, the outlet 320 can be shaped like an inverted "teardrop".

[0158] According to an embodiment of this disclosure, a guide surface is provided at the lower part of the outlet 320, and the guide surface may have a downward inclination angle.

[0159] As an example, the guide surface can guide the water outflow from the lower end of the outlet 320, reducing the distance between the spray range boundary of the outlet 320 and the jet nozzle when spraying water, thereby reducing the spray blind zone, enabling better spraying of objects within a close range, improving the uniformity of jet surface dispersion, and thus improving spray uniformity.

[0160] According to an embodiment of this disclosure, a sprinkler irrigation device is provided, comprising: a nozzle, the nozzle comprising a housing, the housing having the aforementioned jet nozzle disposed therein, wherein a through hole is provided on the housing, and water jets from the outlet of the jet nozzle can be ejected through the through hole.

[0161] According to at least one embodiment of the present disclosure, the above-described sprinkler irrigation device further includes a main unit, wherein a controller is disposed within the main unit, and the controller is configured to control the nozzle to rotate relative to the main unit.

[0162] According to at least one embodiment of the present disclosure, the above-mentioned sprinkler irrigation device further includes: a water jet range adjustment module, which is used to adjust the pitch angle of the jet nozzle, thereby changing the water jet range of the jet nozzle.

[0163] By adjusting the pitch angle, the water jet range of the jet nozzle can be adjusted to change its spray area, thereby improving the adaptability and versatility of the jet nozzle. For example, if the current pitch angle of the jet nozzle is less than the maximum water jet range pitch angle, the pitch angle can be lowered to reduce the water jet range. Conversely, the pitch angle can be increased to increase the water jet range. As an example, the water jet range adjustment module can adjust the pitch angle of the jet nozzle using mechanical structures such as gears, shafts, or hydraulic rods.

[0164] It is understood that the adjustment of the pitch angle and range of the jet nozzle in this application is merely exemplary. Those skilled in the art can adjust the pitch angle of the jet nozzle according to the application scenario and jetting capability of the jet nozzle, without making specific limitations here.

[0165] As an example, the water jet range adjustment module can also be used to adjust the water pressure within the flow channel 1110 of the jet nozzle, thereby changing the water jet range of the jet nozzle. By adjusting the water pressure within the flow channel 1110, the water jet range and spray volume can be adjusted, thereby changing the spray range of the jet nozzle and improving the adaptability and versatility of the jet nozzle.

[0166] For example, the water jet range adjustment module may include a valve and / or a water pump, wherein the valve is used to adjust the water pressure within the flow channel 1110. By adjusting the opening of the valve, the water flow rate within the flow channel 1110 can be adjusted, thereby adjusting the water pressure within the flow channel 1110 to further adjust the spray range of the jet nozzle.

[0167] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "setting," "connection," "linking," "fixing," and "coupling," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communicative connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0168] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, whether directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A jet nozzle for a sprinkler irrigation device, comprising: The nozzle body includes an inlet, an outlet, and a flow channel connecting the inlet and the outlet, wherein water flowing into the flow channel through the inlet is ejected through the outlet. The water outlet has a shape that is wider at the top and narrower at the bottom.

2. The jet nozzle according to claim 1, wherein, The water outlet has a shape that gradually tapers downwards from the upper arc.

3. The jet nozzle according to claim 2, wherein, The lower part of the water outlet has an acute angle shape.

4. The jet nozzle according to claim 2, wherein, The outlet is shaped like a water droplet.

5. The jet nozzle according to any one of claims 1-4, wherein, A guide surface is provided at the lower part of the outlet.

6. The jet nozzle according to claim 5, wherein, The guide surface has a downward tilt angle.

7. The jet nozzle according to any one of claims 1-6, wherein, The jet channel includes a first section, a guide section, and a second section arranged sequentially along the water flow direction; wherein the first section is connected to the second section via the guide section, the inlet is located on the first section, and the outlet is located on the second section.

8. The jet nozzle according to claim 7, wherein, The flow channel of the first section is nearly cylindrical, while the flow channel of the guide section is funnel-shaped.

9. The jet nozzle according to any one of claims 1-8, wherein, When in operation, the water outlet of the jet channel is tilted upward, so that the water can be ejected at an angle upward.

10. The jet nozzle according to claims 1-9, further comprising: A flow stabilizer is disposed within the flow channel. The flow stabilizer has a plurality of first holes along the extension direction of the flow channel, and the sum of the opening areas of the plurality of first holes is less than the opening area of ​​the flow channel at the location of the flow stabilizer.

11. The jet nozzle according to claim 10, wherein, The plurality of first holes include one or more of the following: square holes, circular holes, rectangular holes, and irregularly shaped holes.

12. The jet nozzle according to claim 10, wherein, The plurality of first holes are arranged in a predetermined manner.

13. The jet nozzle according to claim 12, wherein, The predetermined pattern includes one or more of the following: longitudinal, transverse, honeycomb, and annular.

14. The jet nozzle according to any one of claims 10-13, wherein, At least one second hole is formed between the outer wall of the flow stabilizer and the inner wall of the flow channel.

15. The jet nozzle according to claim 14, wherein, The plurality of first holes or the plurality of second holes are evenly distributed.

16. The jet nozzle according to any one of claims 10-13, wherein, A connecting part is provided at the water inlet end of the flow channel, the flow stabilizer is connected to the connecting part, and a part of the outer wall of the flow stabilizer is connected to the inner wall of the flow channel.

17. The jet nozzle according to any one of claims 10-13, wherein, The inner diameter of the inlet end of the flow channel is larger than the inner diameter of the outlet end of the flow channel.

18. The jet nozzle according to any one of claims 10-13, wherein, The nozzle body is also provided with a retaining wall, which surrounds the outer side of the upper end of the water outlet.

19. The jet nozzle according to claim 18, wherein, The enclosure wall extends to the lower end of the water outlet. Along the water outlet's outlet direction, the extension length of the enclosure wall outside the upper end of the water outlet is greater than the extension length of the enclosure wall outside the lower end of the water outlet.

20. A sprinkler irrigation device, comprising: A nozzle, comprising a housing, wherein a jet nozzle according to any one of claims 1-19 is disposed within the housing, wherein a through hole is provided on the housing, and water jets from the outlet of the jet nozzle can be ejected through the through hole.

21. The sprinkler irrigation apparatus according to claim 20, wherein, The nozzle also includes a removable nozzle guard cover that is disposed over the through hole.

22. The sprinkler irrigation apparatus according to claim 21, wherein, The nozzle protective cover can be detachably connected to the nozzle body and can disperse the water flow ejected through the outlet.

23. The sprinkler irrigation apparatus according to claim 21 or 22, wherein, The nozzle protective cover includes a first end cap, which is fitted onto the outlet of the nozzle body.

24. The sprinkler irrigation apparatus according to claim 23, wherein, The first end cap includes a deformable water flow barrier that is capable of deforming under the impact of at least a portion of the ejected water flow.

25. The sprinkler irrigation apparatus according to claim 24, wherein, The water flow blocking member has a shape that is wider at the top and narrower at the bottom when projected onto the front of the jet nozzle along the flow channel axis.

26. The sprinkler irrigation apparatus according to claim 25, wherein, The shape is either triangular or trapezoidal.

27. The sprinkler irrigation apparatus according to any one of claims 24-26, wherein, The water flow blocking component is an elastic component, and at least part of the ejected water flow comes into contact with the elastic component, and the impact force of the water flow causes the elastic component to deform.

28. The sprinkler irrigation apparatus according to claim 27, wherein, The elastic element has a generally pyramidal three-dimensional shape.

29. The sprinkler irrigation apparatus according to claim 28, wherein, The upper part of the nozzle body is provided with a recess, and the root of the pyramid shape can be accommodated in the recess.

30. The sprinkler irrigation apparatus according to any one of claims 23-29, wherein, The first end cap also includes a base, and the water flow blocking member is connected to the base. The first end cap is sleeved on or snapped onto the nozzle body through the base.

31. The sprinkler irrigation apparatus according to claim 30, wherein, The water flow blocking component is connected to the base via an arc-shaped connecting part, wherein the water flow blocking component, the arc-shaped connecting part, and the base are integrally formed.

32. The sprinkler irrigation apparatus according to any one of claims 23-31, wherein, The nozzle protective cover also includes a second end cap, wherein the second end cap is sleeved on the outside of the first end cap.

33. The sprinkler irrigation apparatus according to claim 32, wherein, The first end cap can be fitted and connected with the second end cap.

34. The sprinkler irrigation apparatus according to claim 33, wherein, The first end cap is provided with an annular boss, and the second end cap is provided with an opening that matches the annular boss, the edge of the opening being fitted into the annular boss.

35. The sprinkler irrigation apparatus according to claim 33, wherein, The second end cap has at least one connector on the side facing the first end cap, and the first end cap has at least one slot that matches the at least one connector. The second end cap and the first end cap are fitted together by inserting the at least one connector into the at least one slot.

36. The sprinkler irrigation apparatus according to any one of claims 32-35, wherein, The nozzle housing has a locking part at the through hole, and the second end cap engages with the locking part.

37. The sprinkler irrigation apparatus according to claim 36, wherein, The second end cap has at least one elastic buckle on the side facing the through hole, and the engaging part includes at least one locking plate provided at the through hole of the housing, and the at least one elastic buckle engages with the at least one locking plate.

38. The sprinkler irrigation apparatus according to any one of claims 20-37, further comprising: A main unit, wherein a controller is provided within the main unit, wherein the controller is configured to control the rotation of the nozzle relative to the main unit.

39. The sprinkler irrigation apparatus according to any one of claims 20-37, further comprising: A water jet range adjustment module is used to adjust the pitch angle of the nozzle body or the water pressure in the flow channel, thereby changing the water jet range of the nozzle body.

40. The sprinkler irrigation apparatus according to claim 39, wherein, The water jet range adjustment module includes valves and / or water pumps, which are used to adjust the water pressure in the flow channel.

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