Agricultural and forestry water sprinkler

Abstract

The agriculture and forestry water sprinkler comprises a water sprinkler body, the water sprinkler body comprises a fixed pipe frame, a movable pipe frame, a water spraying nozzle, a water distribution device, a water pressing device and a rotating device, the rotating device comprises a shifting piece, a linkage assembly, a lock hook, a first limiting component and a second limiting component, and the water distribution device comprises a water distribution component and a water distribution torsional spring. The water sprinkler body is provided with an adjusting wheel seat in a semi-hidden mode, the water distribution component is rotationally connected with the movable pipe frame through a rotating shaft, the adjusting wheel seat is rotationally connected to the rotating shaft, one end of the water distribution torsional spring is fixedly connected to the adjusting wheel seat, and the other end of the water distribution torsional spring is connected to the water distribution component in a rotation stopping mode. The water distribution torsion spring always has the movement trend of driving the water distribution component to reset and cling to the movable pipe frame; and a positioning structure is arranged between the adjusting wheel seat and the rotating shaft. The swing frequency of the water distribution component and the torque of the water distribution torsion spring can be adjusted, the adjusting wheel seat is prevented from accidentally rotating during operation, and the operation stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of agriculture and forestry irrigation, in particular to an agriculture and forestry sprinkler. Background Art

[0002] The existing Chinese patent with announcement number CN201140147Y discloses a sprinkler reversing water-blocking device, including a water pressure device, a water distribution device and a rotating device. The water pressure device is composed of a water pressure regulating plate, a water pressure plate, a fixed rotating shaft, an adjusting gear shaft, an arc groove, a rack, an adjusting gear and a small compression spring. The water distribution device is composed of a water distribution plate, a water distribution torsion spring, an angle hook and an angle hook shaft. The rotating device is composed of a lower retaining ring, an upper retaining ring, a rotating torsion spring, a first clamping gear, a second clamping gear, a heterogeneous spring, a rotating arm and a small torsion spring rotating shaft. The sprinkler reversing water-blocking device can change the water spraying angle by adjusting the position of the water pressure plate, thereby adjusting the sprinkler irrigation range. The double retaining ring rotating device can arbitrarily adjust the angle range of the sprinkler irrigation, thereby realizing the range control of the sprinkler irrigation.

[0003] However, the above-mentioned prior art has the following disadvantages: the sprinkler adjusts the torque of the water-dividing torsion spring by screwing the upper cover, but the upper cover is completely exposed outside the sprinkler, and it is very easy to accidentally touch the upper cover during use, resulting in accidental screwing of the upper cover. At the same time, the adjustment feel is poor when the upper cover is screwed, which needs to be improved urgently. Utility Model Content

[0004] The utility model aims to provide an agricultural and forestry sprinkler, which can adjust the swing frequency of the water-dividing component and the torque of the water-dividing torsion spring, prevent the adjusting wheel seat from rotating accidentally during operation, and improve the operation stability.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions: an agricultural and forestry sprinkler, comprising a sprinkler body, the sprinkler body comprising a fixed pipe frame, a movable pipe frame and a water distribution device, the movable pipe frame is provided with a water spray nozzle, a rotating device is provided between the movable pipe frame and the fixed pipe frame, the rotating device comprises a toggle member, a linkage assembly, a lock hook, a first limiting member and a second limiting member, the water distribution device comprises a water distribution component and a water distribution torsion spring, the sprinkler body is semi-hiddenly provided with an adjusting wheel seat, the water distribution component is rotatably connected to the movable pipe frame through a rotating shaft, the adjusting wheel seat is rotatably connected to the rotating shaft, one end of the water distribution torsion spring is fixedly connected to the adjusting wheel seat, the other end of the water distribution torsion spring is non-rotatably connected to the water distribution component, and the water distribution torsion spring always has a movement tendency to drive the water distribution component to reset and be close to the movable pipe frame;

[0006] A positioning structure is provided between the adjusting wheel seat and the rotating shaft. When the adjusting wheel seat rotates to a predetermined angle relative to the rotating shaft, the adjusting wheel seat and the rotating shaft are positioned and matched by the positioning structure.

[0007] By adopting the above technical scheme, water flows out through the water nozzle and impacts the water diversion component, driving the water diversion component to rotate, and at the same time, the elastic force of the water diversion torsion spring is used to drive the water diversion component to reset, thereby driving the water diversion component to act on the movable pipe rack to rotate relative to the fixed pipe rack, the first limiting member, the second limiting member and the toggle member stop cooperate, and under the linkage action of the linkage assembly, drive the lock hook to flip and switch between the unlocked state and the locked state relative to the water diversion component, thereby making the water diversion component and the movable pipe rack switch between the unlocked and locked states, realizing the forward and reverse rotation of the movable pipe rack relative to the fixed pipe rack. The adjusting wheel seat of the utility model is a semi-hidden design, which can effectively prevent the situation of accidentally hitting the adjusting wheel seat. In addition, by screwing the adjusting wheel seat, the torque of the water diversion torsion spring is adjusted, and the reset force when the water diversion component is reset toward the movable pipe rack is changed, thereby adjusting the reset speed of the water diversion component. The torque of the water-dividing torsion spring is adapted to the water pressure sprayed from the water nozzle, or when the water pressure sprayed from the water nozzle is constant, the torque of the water-dividing torsion spring is increased to increase the reset driving force of the water-dividing component, thereby increasing the swing frequency of the water-dividing component, or the torque of the water-dividing torsion spring is reduced to reduce the reset driving force of the water-dividing component, thereby reducing the swing frequency of the water-dividing component; in addition, the utility model provides a positioning structure between the adjusting wheel seat and the rotating shaft, so that when the adjusting wheel seat is adjusted and rotated to a predetermined angle relative to the rotating shaft, the adjusting wheel seat and the rotating shaft can be positioned and locked by the positioning structure, thereby preventing the adjusting wheel seat from accidentally rotating under the impact force of the water flow due to excessive water pressure, thereby improving the stability of the utility model during operation, and having the effects of being able to adjust the swing frequency of the water-dividing component and the torque of the water-dividing torsion spring, preventing the adjusting wheel seat from accidentally rotating during operation, and improving the operational stability.

[0008] The utility model is further configured as follows: the positioning structure includes a plurality of first rack portions and a first inner tooth portion, the plurality of first rack portions are arranged on the outer wall of the rotating shaft along the length direction, a first deformation groove is opened in the middle portion of the adjusting wheel seat, the first deformation groove is opened on the adjusting wheel seat to form a semi-lunar inner tooth ring that is relatively arranged and can produce elastic deformation, the rotating shaft is rotatably arranged in the gap space formed between the two semi-lunar inner tooth rings, and the first inner tooth portion is adapted to the first rack portion correspondingly arranged on the inner walls of the two semi-lunar inner tooth rings.

[0009] By adopting the above technical solution, when the adjusting wheel seat is screwed, the two semi-lunar inner gear rings jump up and down relative to the first rack portion on the rotating shaft, and an alarm sound is issued, thereby increasing the screwing feel of the adjusting wheel seat; when the adjusting wheel seat is screwed to a predetermined angle, the semi-lunar inner gear rings on both sides surround the rotating shaft, and the first rack portion on the outer wall of the rotating shaft is meshed with the corresponding first inner tooth portion on the semi-lunar inner gear ring, thereby keeping the adjusting wheel seat locked with the rotating shaft through the semi-lunar inner gear ring.

[0010] The utility model is further configured as follows: a self-lubricating sleeve is provided between the water-dividing component and the rotating shaft, the self-lubricating sleeve is engaged with the water-dividing component to prevent rotation, and the water-dividing component is rotatably sleeved on the rotating shaft through the self-lubricating sleeve.

[0011] By adopting the above technical solution, the addition of the self-lubricating sleeve can improve the rotation smoothness of the water separation component relative to the rotating shaft.

[0012] The utility model is further configured as follows: the water-dividing component includes a pipe sleeve portion located in the middle, the side wall of the self-lubricating sleeve is symmetrically provided with positioning blocks, the pipe sleeve portion is provided with positioning grooves corresponding to the positioning blocks, and the positioning blocks are matched with the corresponding positioning grooves to prevent rotation and position.

[0013] By adopting the above technical solution, the self-lubricating sleeve can be detachably installed in the pipe sleeve part, which facilitates the installation and subsequent disassembly and replacement of the self-lubricating sleeve.

[0014] The utility model is further configured as follows: the pipe sleeve portion is provided with an annular chamber for installing a water-dividing torsion spring, a stop block is protruded from the side of the pipe sleeve portion facing the annular chamber, the water-dividing torsion spring is movably installed in the annular chamber, and the side of the water-dividing torsion spring away from the adjusting wheel seat is stopped and cooperated with the stop block.

[0015] By adopting the above technical solution, the annular mounting cavity enables the water-dividing torsion spring to have higher concentricity when undergoing elastic deformation during torque adjustment, thereby enabling more precise torque adjustment of the water-dividing torsion spring when the adjustment wheel seat is screwed.

[0016] The utility model is further configured as follows: the outer wall of the adjusting wheel seat is provided with anti-slip convex patterns along the circumferential direction.

[0017] By adopting the above technical solution and adding the anti-skid convex pattern, the adjusting wheel seat is not easy to slip with the hand even if there is water stain on it.

[0018] The utility model is further configured as follows: an angle limiting structure is provided between the adjusting wheel seat and the moving pipe rack.

[0019] By adopting the above technical solution and adding an angle limiting structure, it is possible to prevent the water diversion spring from being damaged due to excessive adjustment of the wheel seat knob.

[0020] The utility model is further configured as follows: the angle limiting structure comprises a limiting protrusion and a limiting notch, the limiting protrusion is integrally formed on the adjusting wheel seat, the limiting notch is provided on the moving pipe rack, and the limiting protrusion is limitedly matched with the limiting notch.

[0021] By adopting the above technical solution, the limiting protrusion can only move within the limiting notch, thereby achieving the limiting rotation of the adjusting wheel seat relative to the moving pipe rack.

[0022] The utility model is further configured as follows: the first limiting member and the second limiting member are rotatably arranged on the fixed pipe rack, the first limiting member and the second limiting member both include an annular sleeve and a stopper portion which are integrally arranged, and a second deformation groove which allows the annular sleeve to elastically deform radially is formed at one end of the annular sleeve away from the stopper portion.

[0023] By adopting the above technical solution and adding the second deformation groove, the annular sleeve of the first limiting member and the second limiting member can undergo elastic deformation in the radial direction when rotating, so that the rotation of the first limiting member and the second limiting member is smoother. At the same time, by adjusting the fan-shaped angle between the stop parts of the first limiting member and the second limiting member, the spraying range of the sprinkler body can be adjusted.

[0024] The utility model is further configured as follows: the outer wall of the fixed pipe rack is provided with a plurality of second rack parts along the axial direction, and the inner walls of the annular sleeves of the first limiting member and the second limiting member are adapted to the second rack parts and are provided with second inner teeth parts.

[0025] By adopting the above technical solution, after the first limiting member and the second limiting member are rotated and adjusted into place, the second inner tooth portions corresponding to the annular sleeves of the first limiting member and the second limiting member are meshed with the second rack portion of the outer wall of the fixed pipe rack to achieve locking and positioning of the first limiting member and the second limiting member on the fixed pipe rack.

[0026] In summary, the utility model has the following beneficial effects:

[0027] A fixed pipe rack, a moving pipe rack, a water spray nozzle, a water distribution device and a rotating device are arranged on a sprinkler body, wherein the rotating device comprises a toggle member, a linkage assembly, a locking hook, a first limiting member and a second limiting member, the water distribution device comprises a water distribution component and a water distribution torsion spring, and the sprinkler body is semi-hiddenly provided with an adjusting wheel seat, the water distribution component is rotatably connected to the moving pipe rack through a rotating shaft, and a positioning structure is provided between the adjusting wheel seat and the rotating shaft, and the torque of the water distribution torsion spring is adjusted by screwing the adjusting wheel seat to adapt the water pressure sprayed by the water spray nozzle and adjust the swing frequency of the water distribution component. When the adjusting wheel seat is screwed into place, the adjusting wheel seat and the rotating shaft can be locked and positioned by the positioning structure, which has the effects of adjusting the swing frequency of the water distribution component and the torque of the water distribution torsion spring, preventing the adjusting wheel seat from accidentally rotating during operation, and improving the operation stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of the utility model.

[0029] Figure 2 This utility model Figure 1 A partial enlarged view of area A.

[0030] Figure 3 It is a structural diagram of the utility model from another perspective.

[0031] Figure 4 It is a longitudinal sectional view of the utility model.

[0032] Figure 5 It is an exploded view of the utility model.

[0033] Figure 6 It is an assembly diagram of the regulating wheel seat of the utility model on the water distribution device.

[0034] Figure 7 This utility model Figure 6 Exploded diagram.

[0035] Figure 8 It is an exploded view of the adjusting wheel seat and the rotating shaft of the utility model.

[0036] Fig. 9 It is a structural diagram of the water distribution component of the utility model.

[0037] Fig.10 It is an exploded view of the first limiting component, the second limiting component and the fixed pipe rack of the utility model.

[0038] In the figure: 1, sprinkler body; 11, adjusting wheel seat; 11a, first deformation groove; 111, half-moon inner gear ring; 1111, first inner gear portion; 112, anti-slip convex pattern; 113, limit convex block; 12, rotating shaft; 121, first rack portion; 13, self-lubricating sleeve; 131, positioning block; 2, fixed pipe rack; 21, second rack portion; 3, moving pipe rack; 3a, limit notch; 4, water spray nozzle; 5, water distribution device; 5 1. Water-dividing component; 511. Pipe sleeve; 511a. Positioning groove; 511b. Annular chamber; 5111. Stop block; 52. Water-dividing torsion spring; 6. Water-pressing device; 7. Rotating device; 71. Pushing member; 72. Linkage assembly; 73. Lock hook; 74. First limiting member; 741. Annular sleeve; 741a. Second deformation groove; 742. Stopper; 743. Second inner tooth portion; 75. Second limiting member. DETAILED DESCRIPTION

[0039] The utility model is further described below in conjunction with the accompanying drawings.

[0040] An agricultural and forestry sprinkler, such as Figure 1-8As shown, the sprinkler body 1 includes a fixed pipe frame 2, a movable pipe frame 3, a water distribution device 5 and a water pressure device 6. The movable pipe frame 3 is provided with a water nozzle 4. A rotating device 7 is provided between the movable pipe frame 3 and the fixed pipe frame 2. The rotating device 7 includes a toggle member 71, a linkage assembly 72, a lock hook 73, a first limiting member 74 and a second limiting member 75. The water distribution device 5 includes a water distribution component 51 and a water distribution torsion spring 52. The sprinkler body 1 is semi-hiddenly provided with an adjusting wheel seat 11. The water distribution component 51 and the movable pipe frame 3 are connected by a rotating shaft 12 Rotationally connected, the adjusting wheel seat 11 is rotationally connected to the rotating shaft 12, one end of the water-dividing torsion spring 52 is fixedly connected to the adjusting wheel seat 11, and the other end of the water-dividing torsion spring 52 is non-rotatably connected to the water-dividing component 51, and the water-dividing torsion spring 52 always has a movement tendency to drive the water-dividing component 51 to reset and close to the moving pipe rack 3; a positioning structure is provided between the adjusting wheel seat 11 and the rotating shaft 12, and when the adjusting wheel seat 11 rotates to a predetermined angle relative to the rotating shaft 12, the adjusting wheel seat 11 and the rotating shaft 12 are positioned and matched through the positioning structure; the positioning structure includes a plurality of first teeth The first rack portions 121 and the first inner tooth portions 1111, a plurality of first rack portions 121 are arranged on the outer wall of the rotating shaft 12 along the length direction, a first deformation groove 11a is opened in the middle of the adjusting wheel seat 11, and the opening of the first deformation groove 11a forms a semi-lunar inner gear ring 111 which is relatively arranged and can produce elastic deformation on the adjusting wheel seat 11, and the rotating shaft 12 is rotatably arranged in the gap space formed between the two semi-lunar inner gear rings 111, and the first inner tooth portion 1111 is adapted to the first rack portion 121 and is correspondingly arranged on the inner walls of the two semi-lunar inner gear rings 111. When When the adjusting wheel seat 11 is screwed, the two semi-lunar inner gear rings 111 jump up and down relative to the first rack portion 121 on the rotating shaft 12, and an alarm sound is issued, thereby increasing the screwing feel of the adjusting wheel seat 11. When the adjusting wheel seat 11 is screwed to a predetermined angle, the semi-lunar inner gear rings 111 on both sides surround the rotating shaft 12, and make the first rack portion 121 on the outer wall of the rotating shaft 12 mesh with the corresponding first inner tooth portion 1111 on the semi-lunar inner gear ring 111, thereby keeping the adjusting wheel seat 11 locked with the rotating shaft 12 through the semi-lunar inner gear ring 111.

[0041] like Figure 4 , Figure 6-9As shown, a self-lubricating sleeve 13 is provided between the water-dividing component 51 and the rotating shaft 12, and the self-lubricating sleeve 13 and the water-dividing component 51 are anti-rotationally matched. The water-dividing component 51 is rotatably sleeved on the rotating shaft 12 through the self-lubricating sleeve 13. The addition of the self-lubricating sleeve 13 can improve the smoothness of the rotation of the water-dividing component 51 relative to the rotating shaft 12; the water-dividing component 51 includes a pipe sleeve portion 511 located in the middle, and a friction matching surface is provided at the bottom of the pipe sleeve portion 511. The pipe sleeve portion 511 is frictionally matched with the moving pipe rack 3 through the friction matching surface. The side wall of the self-lubricating sleeve 13 is symmetrically provided with a positioning block 131, and the pipe sleeve portion 511 is provided with a positioning groove 511a corresponding to the positioning block 131. The positioning block 131 is anti-rotationally positioned and matched with the corresponding positioning groove 511a, so that the self-lubricating sleeve 13 can be detachably installed in the pipe sleeve portion 511, which is convenient for the self-lubricating sleeve 13 Installation and subsequent disassembly and replacement; the sleeve part 511 is provided with an annular chamber 511b for installing the water-dividing torsion spring 52, and a stop block 5111 is convexly provided on the side of the sleeve part 511 facing the annular chamber 511b, the water-dividing torsion spring 52 is movably installed in the annular chamber 511b, and the side of the water-dividing torsion spring 52 away from the adjusting wheel seat 11 is stopped by the stop block 5111. The annular installation cavity makes the concentricity of the water-dividing torsion spring 52 higher when the water-dividing torsion spring 52 undergoes elastic deformation when the torque is adjusted, so that the torque of the water-dividing torsion spring 52 can be adjusted more accurately when the adjusting wheel seat 11 is screwed; the outer wall of the adjusting wheel seat 11 is provided with anti-skid convex patterns 112 along the circumferential direction. The addition of the anti-skid convex patterns 112 makes it difficult for the adjusting wheel seat 11 to slip with the hand even if there is water stains on it.

[0042] like Figure 2 As shown, an angle limiting structure is provided between the adjusting wheel seat 11 and the moving pipe rack 3. The addition of the angle limiting structure can prevent the water-dividing torsion spring 52 from being damaged due to excessive rotation of the adjusting wheel seat 11; the angle limiting structure includes a limiting protrusion 113 and a limiting notch 3a. The limiting protrusion 113 is integrally formed on the adjusting wheel seat 11, and the limiting notch 3a is provided on the moving pipe rack 3. The limiting protrusion 113 is limitedly matched with the limiting notch 3a, and the limiting protrusion 113 can only move within the limiting notch 3a, thereby realizing the limited rotation of the adjusting wheel seat 11 relative to the moving pipe rack 3.

[0043] like Fig.10As shown, the first limiting member 74 and the second limiting member 75 are rotatably arranged on the fixed pipe frame 2. The first limiting member 74 and the second limiting member 75 both include an annular sleeve portion 741 and a stop portion 742 that are integrally arranged. The end of the annular sleeve portion 741 away from the stop portion 742 is provided with a second deformation groove 741a for the annular sleeve portion 741 to elastically deform radially. The addition of the second deformation groove 741a enables the annular sleeve portions 741 of the first limiting member 74 and the second limiting member 75 to elastically deform radially when rotating, so that the rotation of the first limiting member 74 and the second limiting member 75 is smoother. At the same time, by adjusting the gap between the stop portions 742 of the first limiting member 74 and the second limiting member 75 The fan-shaped angle is formed to adjust the spraying range of the sprinkler body 1; the outer wall of the fixed pipe frame 2 is provided with a plurality of second rack portions 21 along the axial direction, and the inner wall of the annular sleeve of the first limiting member 74 and the second limiting member 75 is adapted to the second rack portion 21 and is provided with a second inner tooth portion 743. After the first limiting member 74 and the second limiting member 75 are rotated and adjusted into place, the second inner tooth portion 743 corresponding to the annular sleeve of the first limiting member 74 and the second limiting member 75 is engaged with the second rack portion 21 of the outer wall of the fixed pipe frame 2 to realize the locking and positioning of the first limiting member 74 and the second limiting member 75 on the fixed pipe frame 2. In this embodiment, the first rack portion 121 and the second rack portion 743 are both configured as straight convex rib shapes.

[0044] The basic working principle of the utility model is as follows: water flows out through the water nozzle 4 and impacts the water diversion component 51, driving the water diversion component 51 to rotate, and at the same time, the elastic force of the water diversion torsion spring 52 is used to drive the water diversion component 51 to reset, thereby driving the water diversion component 51 to act on the moving pipe rack 3 to rotate relative to the fixed pipe rack 2, the first limiting member 74 and the second limiting member 75 cooperate with the toggle member 71 stopper, and under the linkage action of the linkage assembly 72, the lock hook 73 is driven to flip and switch between the unlocked state and the locked state relative to the water diversion component 51, thereby making the water diversion component 51 and the moving pipe rack 3 switch between the unlocked and locked states, realizing the forward and reverse rotation of the moving pipe rack 3 relative to the fixed pipe rack 2, the adjusting wheel seat 11 of the utility model is a semi-hidden design, which can effectively prevent the situation of accidentally touching the adjusting wheel seat 11, and in addition, by screwing the adjusting wheel seat 11, the torque of the water diversion torsion spring 52 is adjusted, and the reset driving force when the water diversion component 51 is reset toward the moving pipe rack 3 is changed, thereby The torque of the water-dividing torsion spring 52 is adapted to the water pressure sprayed from the water nozzle 4, or when the water pressure sprayed from the water nozzle 4 is constant, the torque of the water-dividing torsion spring 52 is increased to increase the reset driving force of the water-dividing component 51, thereby increasing the swing frequency of the water-dividing component 51, or the torque of the water-dividing torsion spring 52 is decreased to reduce the reset driving force of the water-dividing component 51, thereby reducing the swing frequency of the water-dividing component 51; in addition, the utility model provides a positioning structure between the adjusting wheel seat 11 and the rotating shaft 12, so that when the adjusting wheel seat 11 is adjusted and rotated to a predetermined angle relative to the rotating shaft 12, the adjusting wheel seat 11 and the rotating shaft 12 can be positioned and locked by the positioning structure, thereby preventing the adjusting wheel seat 11 from accidentally rotating under the impact force of the water flow due to excessive water pressure, thereby improving the stability of the utility model during operation, and having the effects of being able to adjust the swing frequency of the water-dividing component and the torque of the water-dividing torsion spring, preventing the adjusting wheel seat from accidentally rotating during operation, and improving the operational stability.

[0045] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. An agricultural and forestry sprinkler, comprising a sprinkler body (1), the sprinkler body (1) comprising a fixed pipe frame (2), a movable pipe frame (3) and a water distribution device (5), the movable pipe frame (3) being provided with a water spray nozzle (4), a rotating device (7) being provided between the movable pipe frame (3) and the fixed pipe frame (2), the rotating device (7) comprising a toggle member (71), a linkage assembly (72), a locking hook (73), a first position-limiting member (74) and a second position-limiting member (75), the water distribution device (5) comprising a water distribution component (51) and a water distribution torsion spring (52), characterized in that: The sprinkler body (1) is semi-hiddenly provided with an adjusting wheel seat (11); the water-dividing component (51) is rotatably connected to the movable pipe frame (3) via a rotating shaft (12); the adjusting wheel seat (11) is rotatably connected to the rotating shaft (12); one end of the water-dividing torsion spring (52) is fixedly connected to the adjusting wheel seat (11); the other end of the water-dividing torsion spring (52) is non-rotatably connected to the water-dividing component (51); the water-dividing torsion spring (52) always has a movement tendency to drive the water-dividing component (51) to reset and to be closely attached to the movable pipe frame (3); A positioning structure is provided between the adjusting wheel seat (11) and the rotating shaft (12); when the adjusting wheel seat (11) rotates to a predetermined angle relative to the rotating shaft (12), the adjusting wheel seat (11) and the rotating shaft (12) are positioned and matched by the positioning structure.

2. The agricultural and forestry sprinkler according to claim 1, characterized in that: The positioning structure comprises a plurality of first rack portions (121) and a first inner tooth portion (1111); the plurality of first rack portions (121) are arranged on the outer wall of the rotating shaft (12) along the length direction; a first deformation groove (11a) is provided in the middle of the adjusting wheel seat (11); the first deformation groove (11a) is provided on the adjusting wheel seat (11) to form a semi-lunar inner tooth ring (111) which is arranged oppositely and can generate elastic deformation; the rotating shaft (12) is rotatably arranged in a gap space formed between the two semi-lunar inner tooth rings (111); the first inner tooth portion (1111) is adapted to the first rack portion (121) and is correspondingly arranged on the inner walls of the two semi-lunar inner tooth rings (111).

3. The agricultural and forestry sprinkler according to claim 1, characterized in that: A self-lubricating sleeve (13) is provided between the water-dividing component (51) and the rotating shaft (12); the self-lubricating sleeve (13) is engaged with the water-dividing component (51) to prevent rotation; the water-dividing component (51) is rotatably sleeved on the rotating shaft (12) via the self-lubricating sleeve (13).

4. The agricultural and forestry sprinkler according to claim 3, characterized in that: The water-dividing component (51) comprises a pipe sleeve portion (511) located in the middle, a positioning block (131) is symmetrically provided on the side wall of the self-lubricating sleeve (13), a positioning groove (511a) is provided on the pipe sleeve portion (511) corresponding to the positioning block (131), and the positioning block (131) is anti-rotationally positioned in cooperation with the corresponding positioning groove (511a).

5. The agricultural and forestry sprinkler according to claim 4, characterized in that: The pipe sleeve portion (511) is provided with an annular chamber (511b) for installing the water-dividing torsion spring (52); a stop block (5111) is protrudingly provided on one side of the pipe sleeve portion (511) facing the annular chamber (511b); the water-dividing torsion spring (52) is movably installed in the annular chamber (511b); and a side of the water-dividing torsion spring (52) away from the adjusting wheel seat (11) is stop-matched with the stop block (5111).

6. The agricultural and forestry sprinkler according to claim 1, characterized in that: The outer wall of the adjusting wheel seat (11) is provided with anti-skid convex patterns (112) along the circumferential direction.

7. The agricultural and forestry sprinkler according to claim 1, characterized in that: An angle limiting structure is provided between the adjusting wheel seat (11) and the moving pipe frame (3).

8. The agricultural and forestry sprinkler according to claim 7, characterized in that: The angle limiting structure comprises a limiting protrusion (113) and a limiting notch (3a); the limiting protrusion (113) is integrally formed on the adjusting wheel seat (11); the limiting notch (3a) is provided on the moving pipe rack (3); and the limiting protrusion (113) and the limiting notch (3a) are in limiting cooperation.

9. The agricultural and forestry sprinkler according to claim 1, characterized in that: The first limiting member (74) and the second limiting member (75) are rotatably arranged on the fixed pipe frame (2); the first limiting member (74) and the second limiting member (75) both comprise an annular sleeve (741) and a stopper (742) which are integrally arranged; and a second deformation groove (741a) for radial elastic deformation of the annular sleeve (741) is provided at one end of the annular sleeve (741) away from the stopper (742).

10. The agricultural and forestry sprinkler according to claim 9, characterized in that: The outer wall of the fixed pipe frame (2) is provided with a plurality of second rack parts (21) along the axial direction, and the inner wall of the annular sleeve of the first limiting member (74) and the second limiting member (75) is adapted to the second rack part (21) and is provided with a second inner tooth part (743).

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