Rotary spray head

Abstract

This utility model provides a rotary sprinkler head, including a rotary head, an adjusting component, and a water inlet pipe. The outer peripheral wall of the rotary head has spray holes. The adjusting component is located below and communicates with the rotary head. A first valve plate is located at the lower end of the adjusting component, and a first adjusting hole is provided through the first valve plate. The water inlet pipe is rotatably sleeved on the lower outer periphery of the adjusting component. A second valve plate is located inside the water inlet pipe, positioned below the first valve plate, and contacts and cooperates with the first valve plate. A second adjusting hole is provided through the second valve plate. The adjusting component can drive the first valve plate to rotate and adjust the overlap between the first and second adjusting holes to regulate the water spray volume of the rotary head. The rotary sprinkler head provided by this utility model allows the adjusting component to rotate to adjust the overlap between the first and second adjusting holes, thereby regulating the water spray volume and avoiding over-irrigation or insufficient water supply.

Description

Technical Field

[0001] This utility model belongs to the field of nozzle technology, and more specifically, relates to a rotary nozzle. Background Technology

[0002] Most existing crop irrigation sprinklers are water pressure driven self-rotating type. When in use, the water supply source inputs irrigation water into the sprinkler, and under the action of water pressure, it drives the sprinkler to rotate and spray water. At this time, the sprinkler sprays a fixed amount of water within a certain period of time. Because different crops (such as rice, wheat, and vegetables) or the same crop at different growth stages (such as seedling stage, flowering stage, and maturity stage) have different water requirements, this irrigation method is prone to over-irrigation or insufficient water supply. Utility Model Content

[0003] This utility model provides a rotating nozzle that allows the adjustment component to rotate to adjust the overlap between the first and second adjustment holes, thereby adjusting the water spray volume of the rotating nozzle and avoiding over-irrigation or insufficient water supply.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a rotary nozzle is provided, including a rotary head, an adjusting component, and a water inlet pipe. The outer peripheral wall of the rotary head is provided with spray holes. The adjusting component is located below the rotary head and communicates with it. A first valve plate is provided at the lower end of the adjusting component, and a first adjusting hole is provided through the first valve plate. The water inlet pipe is rotatably sleeved on the lower outer periphery of the adjusting component. A second valve plate is located inside the water inlet pipe, positioned below the first valve plate. The second valve plate contacts and cooperates with the first valve plate, and a second adjusting hole is provided through the second valve plate. The adjusting component can drive the first valve plate to rotate and adjust the overlap between the first and second adjusting holes to adjust the water spray volume of the rotary head.

[0005] In one possible implementation, the adjusting component includes a mounting sleeve and an adjusting sleeve. The mounting sleeve is disposed inside the water inlet pipe and extends upward to the top of the water inlet pipe. A first limiting groove is radially provided on the outer peripheral wall of the mounting sleeve and extends axially to the lower opening of the mounting sleeve. A first insert is provided on the outer peripheral wall of the first valve plate and embedded in the first limiting groove. The adjusting sleeve is threaded onto the upper outer periphery of the mounting sleeve.

[0006] In some embodiments, an annular groove is provided on the inner peripheral wall of the water inlet pipe, the annular groove extends axially to the upper port of the water inlet pipe, a fixing sleeve is provided on the bottom wall of the annular groove, a second limiting groove is provided radially through the outer peripheral wall of the fixing sleeve and extends axially to the upper opening of the fixing sleeve, and a second insert is provided on the outer peripheral wall of the second valve plate, which is embedded in the second limiting groove.

[0007] In some embodiments, a mating sleeve is threaded into the annular groove. The mating sleeve is fitted onto the lower outer periphery of the mounting sleeve and the outer periphery of the fixing sleeve. The lower outer peripheral wall of the mating sleeve is provided with a circumferentially extending adjustment groove, the outer peripheral wall of the fixing sleeve is provided with an axially extending locking groove, and the inner peripheral wall of the mating sleeve is provided with an axially extending insert strip located within the adjustment groove and the locking groove.

[0008] In some embodiments, the top of the first valve plate is provided with an upper rubber gasket ring embedded in the mounting sleeve, and the bottom of the second valve plate is provided with a lower rubber gasket ring embedded in the fixing sleeve.

[0009] In one possible implementation, a transition sleeve is provided between the adjusting component and the rotating head, which is threadedly connected to the adjusting component. A gearbox is provided inside the transition sleeve, and there is a clearance between the gearbox and the transition sleeve. An input shaft is provided below the gearbox and an output shaft is provided above it. The output shaft is connected to the rotating head and is used to drive the rotating head to rotate. A fan wheel is connected to the input shaft, and the fan wheel can rotate under the action of water flow.

[0010] In some embodiments, the output shaft is provided with a rotating sleeve that extends upward to the top of the transition sleeve. The rotating sleeve is threadedly connected to the rotating head and communicates with both the rotating head and the transition sleeve.

[0011] In some embodiments, a cross plate is provided inside the rotating sleeve, and a snap-fit ​​connector is connected to the output shaft. A cross groove is provided on the upper end face of the snap-fit ​​connector. The cross groove is provided through the outer peripheral wall of the snap-fit ​​connector and is used to accommodate the cross plate.

[0012] In some embodiments, a wear-resistant pad is provided between the transition sleeve and the rotating head.

[0013] In some embodiments, the upper end of the transition sleeve is provided with a gathering platform that converges toward the central axis, and the lower end of the rotating sleeve is provided with a limiting platform that protrudes outward and is located below the gathering platform. A rotating sealing ring is provided between the limiting platform and the gathering platform.

[0014] Compared with the prior art, the rotary nozzle provided in this embodiment allows for the adjustment of the water spray volume when the spray volume needs to be adjusted. This adjustment causes the first valve plate to rotate (the water spray volume is at its maximum when the first and second adjustment holes are fully aligned; the rotary nozzle stops spraying when the first valve plate completely blocks the second adjustment hole and the second valve plate completely blocks the first adjustment hole). This adjusts the overlap between the first and second adjustment holes, thereby regulating the water spray volume and preventing over-irrigation or insufficient water supply. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the rotating nozzle provided in an embodiment of the present utility model;

[0017] Figure 2 A front sectional view of the rotating nozzle provided in an embodiment of this utility model;

[0018] Figure 3 A schematic diagram of the disassembly structure of the rotating nozzle provided in an embodiment of this utility model;

[0019] Figure 4 This is an embodiment of the present utility model. Figure 3 A magnified schematic diagram of the local structure at point I;

[0020] Figure 5 This is an embodiment of the present utility model. Figure 3 Structural diagrams of the intermediate transition sleeve, rotating sleeve, adjusting sleeve, docking sleeve, and gearbox;

[0021] Figure 6 This is an embodiment of the present utility model. Figure 5 Another structural diagram from a different perspective;

[0022] Figure 7 This is an embodiment of the present utility model. Figure 5 A structural diagram from another perspective.

[0023] The following are the labeling elements in the figure:

[0024] 10. Rotating head; 11. Spray nozzle; 20. Adjusting component; 21. Mounting sleeve; 211. First limiting groove; 212. Adjusting groove; 22. Adjusting sleeve; 30. First valve plate; 31. First adjusting hole; 32. First insert; 40. Water inlet pipe; 41. Second valve plate; 42. Second adjusting hole; 43. Annular groove; 44. Fixing sleeve; 45. Second limiting groove; 46. Second insert; 47. Locking groove; 50. Speed ​​changer 51. Input shaft; 52. Output shaft; 53. Fan wheel; 54. Snap connector; 55. Cross groove; 56. Limiting strip; 60. Rotating sleeve; 61. Cross plate; 62. Limiting platform; 63. Rotary sealing ring; 70. Butt sleeve; 71. Embedding strip; 80. Upper rubber gasket ring; 81. Lower rubber gasket ring; 90. Transition sleeve; 91. Wear-resistant pad; 92. Through gap; 93. Abutment strip; 94. Positioning groove; 95. Gathering platform. Detailed Implementation

[0025] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or indirectly on the other element. It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not 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 utility model. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a number" means two or more, unless otherwise explicitly specified.

[0027] Please see Figures 1 to 7 The rotary nozzle provided by this utility model will now be described. The rotary nozzle includes a rotary head 10, an adjusting member 20, and a water inlet pipe 40. The outer peripheral wall of the rotary head 10 is provided with water spray holes 11. The adjusting member 20 is disposed below the rotary head 10 and communicates with the rotary head 10. The lower end of the adjusting member 20 is provided with a first valve plate 30, and a first adjusting hole 31 is provided through the first valve plate 30. The water inlet pipe 40 is rotatably sleeved on the lower outer periphery of the adjusting member 20. A second valve plate 41 is provided inside the water inlet pipe 40, located below the first valve plate 30. The second valve plate 41 contacts and cooperates with the first valve plate 30, and a second adjusting hole 42 is provided through the second valve plate 41. The adjusting member 20 can drive the first valve plate 30 to rotate and adjust the overlap between the first adjusting hole 31 and the second adjusting hole 42 to adjust the water spray volume of the rotary head 10.

[0028] Furthermore, the rotating head 10 is connected to the adjusting component 20, and the adjusting component 20 is connected to the water inlet pipe 40.

[0029] Furthermore, the first adjusting hole 31 and the second adjusting hole 42 have the same shape.

[0030] Furthermore, the first valve plate 30 and the second valve plate 41 are made of ceramic material, which reduces the frictional force between the first valve plate 30 and the second valve plate 41 during relative rotation.

[0031] This application provides a rotary sprinkler head. In actual use, the inlet pipe 40 is connected to a water source, and the water source supplies irrigation water into the inlet pipe 40. The irrigation water passes through the adjusting member 20 and the rotary head 10, and is sprayed out from the spray hole 11. When it is necessary to adjust the spray volume of the spray hole 11, the adjusting member 20 is rotated, which causes the first valve plate 30 to rotate (the spray volume is the largest when the first adjusting hole 31 and the second adjusting hole 42 are completely aligned; when the first valve plate 30 completely blocks the second adjusting hole 42, and the second valve plate 41 completely blocks the first adjusting hole 31, the rotary head 10 stops spraying water). That is, the overlap between the first adjusting hole 31 and the second adjusting hole 42 is adjusted, thereby realizing the adjustment of the spray volume of the spray hole 11 and avoiding over-irrigation or insufficient water supply.

[0032] Compared with the prior art, the rotary nozzle provided in this embodiment allows for the adjustment of the water spray volume of the spray hole 11 when the water spray volume needs to be adjusted. The adjustment component 20 is rotated to drive the first valve plate 30 to rotate (the water spray volume is at its maximum when the first adjustment hole 31 and the second adjustment hole 42 are completely aligned; when the first valve plate 30 completely blocks the second adjustment hole 42 and the second valve plate 41 completely blocks the first adjustment hole 31, the rotary head 10 stops spraying water). This adjusts the overlap between the first adjustment hole 31 and the second adjustment hole 42, thereby adjusting the water spray volume of the spray hole 11 and avoiding over-irrigation or insufficient water supply.

[0033] In one possible implementation, the aforementioned adjusting element 20 adopts, as shown in... Figures 1 to 7 The structure shown is described in the following document. Figures 1 to 7 The adjusting component 20 includes a mounting sleeve 21 and an adjusting sleeve 22. The mounting sleeve 21 is disposed inside the water inlet pipe 40 and extends upward to the top of the water inlet pipe 40. A first limiting groove 211 is radially provided on the outer peripheral wall of the mounting sleeve 21 and extends axially to the lower opening of the mounting sleeve 21. A first insert 32 is provided on the outer peripheral wall of the first valve plate 30 and is embedded in the first limiting groove 211. The adjusting sleeve 22 is threaded onto the upper outer periphery of the mounting sleeve 21.

[0034] Specifically, the outer peripheral wall of the adjusting sleeve 22 is hexagonal, making it easy to rotate with the help of a wrench. When it is necessary to adjust the overlap between the first adjusting hole 31 and the second adjusting hole 42, the adjusting sleeve 22 is rotated, which drives the mounting sleeve 21 to rotate. Under the mutual limiting of the first limiting groove 211 and the first insert 32, the mounting sleeve 21 drives the first valve plate 30 to rotate. Since the force required to screw the adjusting sleeve 22 and the mounting sleeve 21 is much greater than the force required to rotate the first valve plate 30, the mounting sleeve 21 will rotate with the adjusting sleeve 22 when the adjusting sleeve 22 is rotated, thus realizing the convenience of water spray volume adjustment.

[0035] In some embodiments, see Figure 2 , Figure 3 and Figure 4The inner peripheral wall of the water inlet pipe 40 is provided with an annular groove 43, which extends axially to the upper port of the water inlet pipe 40. The bottom wall of the annular groove 43 is provided with a fixing sleeve 44. The outer peripheral wall of the fixing sleeve 44 is provided with a second limiting groove 45 that extends radially to the upper opening of the fixing sleeve 44. The outer peripheral wall of the second valve plate 41 is provided with a second insert 46 embedded in the second limiting groove 45.

[0036] Specifically, the fixed sleeve 44 is fixedly set relative to the water inlet pipe 40, and through the mutual limiting of the second limiting groove 45 and the second insert 46, when the rotating adjusting sleeve 22 drives the mounting sleeve 21 and the first valve plate 30 to rotate, the second valve plate 41 is prevented from rotating with the first valve plate 30, thus improving the convenience of adjustment.

[0037] Furthermore, a bottom rubber gasket ring is provided between the bottom wall of the annular groove 43 and the fixed sleeve 44 to increase the sealing performance between the water inlet pipe 40 and the fixed sleeve 44.

[0038] In some embodiments, see Figures 2 to 7 The annular groove 43 is internally threaded with a mating sleeve 70, which is fitted on the lower outer periphery of the mounting sleeve 21 and the outer periphery of the fixing sleeve 44. The lower outer periphery wall of the mating sleeve 70 is provided with a circumferentially extending adjustment groove 212, the outer periphery wall of the fixing sleeve 44 is provided with an axially extending locking groove 47, and the inner periphery wall of the mating sleeve 70 is provided with an axially extending insert strip 71 located in the adjustment groove 212 and the locking groove 47.

[0039] Specifically, the locking groove 47 extends along the vertical direction to the upper and lower ends of the fixing sleeve 44, the two side walls of the embedded strip 71 are in contact with the two inner side walls of the locking groove 47, and the size of the central angle corresponding to the adjusting groove 212 is greater than the size of the central angle corresponding to the locking groove 47.

[0040] When the adjusting sleeve 22 is rotated, the mounting sleeve 21 drives the first valve plate 30 to rotate as well. That is, the adjusting groove 212 rotates relative to the embedded strip 71. When one of the inner walls of the adjusting groove 212 abuts, the first adjusting hole 31 and the second adjusting hole 42 are completely aligned. When the other inner wall of the adjusting groove 212 abuts against the embedded strip 71, the first valve plate 30 completely blocks the second adjusting hole 42, and the second valve plate 41 completely blocks the first adjusting hole 31. That is, the size of the central angle corresponding to the adjusting groove 212 just meets the adjustment range of the first adjusting hole 31 and the second adjusting hole 42, which improves the convenience of adjustment and avoids over-adjustment.

[0041] Furthermore, the inner peripheral wall of the mating sleeve 70 is provided with an inwardly protruding abutment platform, which is located near the upper port of the mating sleeve 70. The lower outer peripheral wall of the mounting sleeve 21 is provided with an outwardly protruding anti-shift platform, the upper end face of the anti-shift platform abutting and cooperating with the lower end face of the abutment platform. The adjusting groove 212 is provided on the outer peripheral wall of the anti-shift platform and extends in the vertical direction to the upper and lower end faces of the anti-shift platform.

[0042] Furthermore, the outer peripheral wall of the connecting sleeve 70 is provided with a protrusion that protrudes outward. The protrusion is located above the water inlet pipe 40 and is hexagonal in shape, which facilitates installation and disassembly with the help of a wrench.

[0043] Optionally, based on the above structure, there is another possible implementation method: the fixing sleeve 44 and the water inlet pipe 40 can be fixed together (integrated), the locking groove 47 can be removed, and the docking sleeve 70 can only be fitted on the middle outer periphery of the mounting sleeve 21 (i.e., the length of the docking sleeve 70 is shortened). The upper end face of the anti-shift platform is moved down, and the docking sleeve 70 is located above the anti-shift platform. The lower outer peripheral wall (anti-shift platform) of the mounting sleeve 21 is set opposite to the inner peripheral wall of the water inlet pipe 40. The embedded strip 71 is set on the inner peripheral wall of the water inlet pipe 40 and is only located in the adjusting groove 212, and is matched with its limiting position. Other structures remain unchanged. This structural layout can reduce the disassembly and assembly of parts.

[0044] In some embodiments, see Figure 2 , Figure 3 and Figure 4 The top of the first valve plate 30 is provided with an upper rubber pad ring 80 embedded in the mounting sleeve 21, and the bottom of the second valve plate 41 is provided with a lower rubber pad ring 81 embedded in the fixing sleeve 44.

[0045] Specifically, the upper rubber gasket ring 80 increases the sealing performance between the mounting sleeve 21 and the first valve plate 30, and the lower rubber gasket ring 81 increases the sealing performance between the fixing sleeve 44 and the second valve plate 41, thereby improving practicality.

[0046] In one possible implementation, the aforementioned adjusting member 20 and rotating head 10 are configured as follows: Figure 2 ,and Figures 4 to 7 The structure shown is described in the following document. Figure 2 ,and Figures 4 to 7 A transition sleeve 90 is provided between the adjusting component 20 and the rotating head 10 and is threadedly connected to the adjusting component 20. A gearbox 50 is provided inside the transition sleeve 90. There is a passage gap 92 between the gearbox 50 and the transition sleeve 90. An input shaft 51 is provided below the gearbox 50 and an output shaft 52 is provided above it. The output shaft 52 is connected to the rotating head 10 and is used to drive the rotating head 10 to rotate. A fan wheel 53 is connected to the input shaft 51 and can rotate under the action of water flow.

[0047] Specifically, irrigation water is supplied through gap 92. When the irrigation water rapidly enters the transition sleeve 90, it drives the fan wheel 53 to rotate. The power generated by the high-speed rotating fan wheel 53 is reduced by the gearbox 50 and then output by the output shaft 52, driving the rotating head 10 to rotate at a low speed to avoid the rotating head 10 rotating too fast.

[0048] Furthermore, the outer peripheral wall of the gearbox 50 is provided with a limiting strip 56 extending in the vertical direction. Several limiting strips 56 are spaced apart in the circumferential direction of the gearbox 50. The inner peripheral wall of the transition sleeve 90 is provided with an abutment strip 93 extending in the vertical direction. Several abutment strips 93 are spaced apart in the inner peripheral wall of the transition sleeve 90. The side wall of the abutment strip 93 near the central axis of the transition sleeve 90 is provided with a positioning groove 94 extending vertically and used to accommodate the limiting strips 56. Several limiting strips 56 and several positioning grooves 94 are arranged one-to-one to limit the rotation of the gearbox 50 relative to the transition sleeve 90.

[0049] In some embodiments, see Figure 2 ,and Figures 4 to 7 The output shaft 52 is provided with a rotating sleeve 60 extending upward to the top of the transition sleeve 90. The rotating sleeve 60 is threadedly connected to the rotating head 10 and is connected to both the rotating head 10 and the transition sleeve 90.

[0050] Specifically, the upper part of the rotating sleeve 60 is located inside the rotating head 10. The rotating sleeve 60 and the rotating head 10 are detachable, which facilitates the individual disassembly and replacement of the rotating head 10, improving convenience. Furthermore, the direction in which the rotating sleeve 60 drives the rotating head 10 to rotate can cause the rotating sleeve 60 and the rotating head 10 to be tightened, preventing them from separating from each other.

[0051] Furthermore, a sealing ring is provided on the upper outer periphery of the rotating sleeve 60, and the outer peripheral wall of the sealing ring abuts against the inner peripheral wall of the rotating head 10 to increase the sealing performance between the rotating sleeve 60 and the rotating head 10.

[0052] In some embodiments, see Figure 2 , Figure 4 , Figure 5 and Figure 7 The rotating sleeve 60 is provided with a cross plate 61, and the output shaft 52 is connected to a snap-fit ​​connector 54. The upper end face of the snap-fit ​​connector 54 is provided with a cross groove 55, which is provided through the outer peripheral wall of the snap-fit ​​connector 54 and is used to accommodate the cross plate 61.

[0053] Specifically, after separating the adjusting member 20 from the transition sleeve 90, the gearbox 50 can be pulled directly away from the rotating sleeve 60 to separate the snap connector 54 from the cross plate 61, thus realizing the separate disassembly of the gearbox 50 and the rotating sleeve 60.

[0054] In some embodiments, see Figure 1 , Figure 2 and Figures 4 to 7 A wear-resistant pad 91 is provided between the transition sleeve 90 and the rotating head 10.

[0055] Specifically, the wear-resistant pad 91 can prevent direct contact between the transition sleeve 90 and the rotating head 10, and prevent wear between the transition sleeve 90 and the rotating head 10.

[0056] In some embodiments, see Figures 2 to 4 , Figure 5 and Figure 7 The upper end of the transition sleeve 90 is provided with a gathering platform 95 that converges towards the central axis, and the lower end of the rotating sleeve 60 is provided with a limiting platform 62 that protrudes outward and is located below the gathering platform 95. A rotating sealing ring 63 is provided between the limiting platform 62 and the gathering platform 95.

[0057] Specifically, the mutual limiting between the gathering platform 95 and the limiting platform 62 prevents the rotating sleeve 60 from moving upward and separating from the transition sleeve 90, and the setting of the rotating sealing ring 63 also increases the sealing performance between the transition sleeve 90 and the rotating sleeve 60.

[0058] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotating nozzle, characterized in that, include: The rotating head has water spray holes on its outer peripheral wall; An adjusting component is disposed below and communicates with the rotating head. The lower end of the adjusting component has a first valve plate, and a first adjusting hole is provided through the first valve plate. The water inlet pipe is rotatably sleeved on the lower outer periphery of the adjusting member. A second valve plate is provided inside the water inlet pipe, located below the first valve plate. The second valve plate is in contact with the first valve plate, and a second adjusting hole is provided through the second valve plate. The adjusting component can drive the first valve plate to rotate and adjust the overlap between the first adjusting hole and the second adjusting hole to adjust the water spray volume of the rotating head.

2. The rotary nozzle as described in claim 1, characterized in that, The adjusting element includes: An installation sleeve is disposed inside the water inlet pipe and extends upward above the water inlet pipe. A first limiting groove, extending radially through the outer peripheral wall of the installation sleeve and axially to the lower opening of the installation sleeve, is provided. A first insert, embedded in the first limiting groove, is provided on the outer peripheral wall of the first valve plate. An adjusting sleeve is threaded onto the upper outer periphery of the mounting sleeve.

3. The rotary nozzle as described in claim 2, characterized in that, The inner circumferential wall of the water inlet pipe is provided with an annular groove, which extends axially to the upper port of the water inlet pipe. A fixing sleeve is provided on the bottom wall of the annular groove. A second limiting groove extending axially to the upper opening of the fixing sleeve is provided radially through the outer circumferential wall of the fixing sleeve. A second insert is provided on the outer circumferential wall of the second valve plate, which is embedded in the second limiting groove.

4. The rotary nozzle as described in claim 3, characterized in that, The annular groove is threaded with a mating sleeve, which is fitted onto the lower outer periphery of the mounting sleeve and the outer periphery of the fixing sleeve. The lower outer peripheral wall of the mating sleeve is provided with a circumferentially extending adjustment groove, the outer peripheral wall of the fixing sleeve is provided with an axially extending locking groove, and the inner peripheral wall of the mating sleeve is provided with an axially extending insert strip located within the adjustment groove and the locking groove.

5. The rotary nozzle as described in claim 4, characterized in that, The top of the first valve plate is provided with an upper rubber gasket ring embedded in the mounting sleeve, and the bottom of the second valve plate is provided with a lower rubber gasket ring embedded in the fixing sleeve.

6. The rotary nozzle as described in claim 1, characterized in that, A transition sleeve threadedly connected to the adjusting component is provided between the adjusting component and the rotating head. A gearbox is provided inside the transition sleeve. There is a clearance between the gearbox and the transition sleeve. An input shaft is provided below the gearbox and an output shaft is provided above it. The output shaft is connected to the rotating head and is used to drive the rotating head to rotate. A fan wheel is connected to the input shaft. The fan wheel can rotate under the action of water flow.

7. The rotary nozzle as described in claim 6, characterized in that, The output shaft is provided with a rotating sleeve that extends upward to the top of the transition sleeve. The rotating sleeve is threadedly connected to the rotating head and communicates with both the rotating head and the transition sleeve.

8. The rotary nozzle as described in claim 7, characterized in that, The rotating sleeve is provided with a cross plate, and a snap-fit ​​connector is connected to the output shaft. The upper end face of the snap-fit ​​connector is provided with a cross groove, which is provided through the outer peripheral wall of the snap-fit ​​connector and is used to accommodate the cross plate.

9. The rotary nozzle as described in claim 7, characterized in that, A wear-resistant pad is provided between the transition sleeve and the rotating head.

10. The rotary nozzle as described in claim 7, characterized in that, The upper end of the transition sleeve is provided with a gathering platform that converges towards the central axis, and the lower end of the rotating sleeve is provided with a limiting platform that protrudes outward and is located below the gathering platform. A rotating sealing ring is provided between the limiting platform and the gathering platform.

Images