A sand-proof sprinkler mechanism

Abstract

The application discloses a sand-proof water sprinkler mechanism, which comprises a base, a shell and a connecting table arranged on the base, a strip-shaped water spraying pipe rotatably connected between the shell and the connecting table, water outlets, a shell inner cavity and water inlets arranged on the shell and communicated with the strip-shaped water spraying pipe, an impeller transmission member arranged on the shell, a transmission device in transmission connection with the impeller transmission member and the strip-shaped water spraying pipe, an adjusting device arranged on the shell and capable of adjusting the water flow direction so that the water flow drives the impeller transmission member to reversely rotate and drives the strip-shaped water spraying pipe to reciprocatingly rotate, a sealing cavity arranged in the shell and used for mounting the transmission device, a water baffle arranged on the opening of the sealing cavity and covering the sealing cavity, and a connecting through hole arranged on the water baffle and used for connecting the output end of the transmission device with the impeller transmission member.

Description

Technical Field

[0001] This invention relates to the field of sprinkler mechanism technology, and in particular to a sand-prevention sprinkler mechanism. Background Technology

[0002] A sprinkler system is a device installed in gardens and plazas primarily for watering plants over large areas.

[0003] The invention patent with authorization announcement number CN103752434B discloses a sprinkler mechanism. Since water sources usually contain sand and gravel during daily use, the sand and gravel can easily get stuck in the transmission structure and damage the equipment. Therefore, there is a need for a sprinkler mechanism that can prevent sand and gravel from getting stuck in the transmission structure. Summary of the Invention

[0004] Therefore, the purpose of this invention is to provide a sand-prevention sprinkler mechanism that can prevent sand and gravel from getting stuck in the transmission device.

[0005] The technical solution adopted by this invention to solve its technical problem is to provide a sand-prevention sprinkler mechanism, including a base, a housing and a connecting platform on the base, a strip-shaped spray pipe rotatably connected between the housing and the connecting platform, an outlet, an inner cavity and an inlet all communicating with the strip-shaped spray pipe, an impeller drive and a transmission device connected to the impeller drive and the strip-shaped spray pipe, an adjustment device for adjusting the water flow direction so that the water flow drives the impeller drive to rotate forward and backward, thereby driving the strip-shaped spray pipe to rotate back and forth, and a sealed cavity for installing the transmission device is provided inside the housing. A baffle plate covering the sealed cavity is provided at the opening of the sealed cavity, and the baffle plate has a connecting through hole so that the transmission device can be connected to the output end of the impeller drive.

[0006] As a further improvement of the present invention, the transmission device includes a gear assembly that is driven by the impeller transmission component and a pipe adapter that is driven by the gear assembly and detachably connected to the strip spray pipe, with the water outlet located on the pipe adapter.

[0007] As a further improvement of the present invention, the strip-shaped water spray pipe is provided with a groove, and the pipe adapter is provided with a buckle that can be engaged in the groove.

[0008] As a further improvement of the present invention, the impeller drive component is provided with an impeller cover on the side near the water inlet. The impeller cover is provided with a first through hole and a second through hole. The adjustment device includes a conversion wheel rotatably connected to the impeller cover and an angle adjustment device that can be engaged with the conversion wheel. The conversion wheel is provided with a baffle plate. The conversion wheel has a first rotation position and a second rotation position. When the conversion wheel rotates to the first rotation position, the baffle plate covers the second through hole. When the conversion wheel rotates to the second rotation position, the baffle plate covers the first through hole.

[0009] As a further improvement of the present invention, the angle adjustment device includes an angle adjustment component rotatably connected to the outside of the housing and a switching rod pulsator connected to the angle adjustment component. The switching wheel is provided with a locking part, and the switching rod is provided with a locking groove into which the locking part can be inserted and a locking surface into which the locking part can abut. The impeller cover is provided with a limiting protrusion. When the switching wheel rotates to the first rotation position, the locking part is inserted into the locking groove. When the switching wheel rotates to the second rotation position, the locking part abuts against the locking surface and the switching rod abuts against the limiting protrusion.

[0010] The angle adjustment component is provided with a mating through hole, and the pipe adapter is provided with a protruding rib that is inserted into the mating through hole so that when the pipe adapter rotates, the protruding rib abuts against the inner wall of the mating through hole, causing the angle adjustment component to rotate, thereby driving the switching rod to rotate.

[0011] As a further improvement of the present invention, the angle adjustment assembly includes an angle adjuster, an angle control sleeve, and a stroke switching rod. The angle adjuster is provided with a mounting through hole, and a connecting block with a wavy surface is provided on the inner side wall of the mounting through hole. The angle control sleeve is provided with an external gear ring that is inserted into the mounting through hole and meshes with the connecting block. The angle control sleeve is provided with a stroke protrusion, and the stroke protrusion is provided with a stroke through hole. The stroke switching rod is provided with a stroke protrusion that is inserted into the stroke through hole and a switching through hole into which one end of the switching rod can be inserted.

[0012] As a further improvement of the present invention, the impeller cover is provided with an impeller boss, the impeller boss is provided with an impeller groove, the impeller transmission component is provided in the impeller groove, and the first through hole and the second through hole are provided at positions corresponding to the impeller groove.

[0013] As a further improvement of the present invention, the housing is provided with a guide slope and a guide baffle at the water inlet so that the conversion wheel driven by the water flow always keeps rotating counterclockwise.

[0014] As a further improvement of the present invention, a pressure reducing valve is provided on the upper part of the impeller cover.

[0015] As a further improvement of the present invention, the strip-shaped water spray pipe is provided with at least two water spray pipes, and the strip-shaped water spray pipe is provided with at least two water pipe protrusions with different inclination directions. The water pipe protrusions are provided with water pipe holes that communicate with the inside of the strip-shaped water spray pipe and allow the water spray pipes to be inserted. A hole cleaner is inserted into one end of the strip-shaped water spray pipe.

[0016] The beneficial effects of this invention are:

[0017] 1. Water is injected through the inlet. The water flow and pressure drive the impeller to rotate, causing the strip spray pipe to swing and spray water. The adjusting device adjusts the water flow direction to make the impeller rotate forward or backward, thereby driving the transmission device to make the strip spray pipe swing back and forth to spray water. Since small hard particles such as sand and gravel often appear in the water source, these hard particles can easily get stuck on the transmission surface of the transmission device during daily use, causing jamming and wear, reducing the service life of the product. The water baffle can block most of the water, allowing the remaining water to enter the sealed cavity to lubricate the transmission device and prevent hard particles from getting stuck in the transmission device. Since the impeller needs to be connected to the transmission device, a connecting through hole is provided so that the transmission device can be connected to the output end of the impeller.

[0018] 2. The gear assembly is installed in the sealed cavity, and the output end of the gear assembly extends out of the housing. The pipe adapter is set outside the housing and connects to the strip spray pipe and meshes with the output end of the gear assembly. Setting the water outlet on the pipe adapter can isolate the water source from the transmission part of the pipe adapter and the entire gear assembly, and connect the inner cavity of the housing and the strip spray pipe. The pipe adapter has the dual function of water passage and back-and-forth swing. The water outlet is in the center and the structure is simple.

[0019] 3. The strip-shaped water spray pipe has a large structure, and it would be very troublesome to install if a conventional threaded structure is used. The snap-on installation is convenient and quick.

[0020] 4. The water flow and pressure will provide power for the rotation of the conversion wheel. The angle adjustment device can engage the conversion wheel at different positions, so that the conversion wheel can switch back and forth between the first rotation position and the second rotation position. When the water flows through the first and second through holes, it drives the impeller transmission component to rotate in different directions.

[0021] 5. The inner wall of the impeller groove is inclined. When the water flows out from the No. 1 or No. 2 through hole, it will flow in different directions, thereby driving the impeller transmission component to rotate in different directions.

[0022] 6. The pressure reducing valve can divert water flow and reduce water impact, thereby ensuring that the transmission device does not rotate too fast.

[0023] 7. Different tilting directions can make the spraying area larger and more uniform, and the nozzle cleaner can prevent the strip spray pipe from getting clogged. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention;

[0025] Figure 2 This is an exploded view of the structure of the present invention;

[0026] Figure 3 This is a structural schematic diagram of the pipe adapter of the present invention;

[0027] Figure 4 This is a schematic diagram of the angle adjuster of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the impeller drive component, the drive device, and the angle adjustment device of the present invention;

[0029] Figure 6 This is a structural schematic diagram of the impeller drive component, drive device, and angle adjustment device of the present invention from another angle;

[0030] Figure 7 This is a schematic diagram of the conversion wheel of the present invention;

[0031] Figure 8 This is a partial structural schematic diagram of the housing of the present invention;

[0032] Figure 9 This is a partial structural diagram of the housing of the present invention from another angle;

[0033] Figure 10 This is a partial structural schematic diagram of the housing of the present invention;

[0034] Figure 11 This is a partial structural diagram of the housing of the present invention from another angle;

[0035] Figure 12 This is a schematic diagram of the structure of the conversion wheel of the present invention located at the first rotation position;

[0036] Figure 13 This is a schematic diagram of the structure of the conversion wheel of the present invention located at the second rotation position. Detailed Implementation

[0037] The technical solution of the present invention will now be clearly and completely described in conjunction with the accompanying drawings.

[0038] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in this invention are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly. Furthermore, descriptions involving "preferred," "second-best," etc., in this invention are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "preferred" or "second-best" may explicitly or implicitly include at least one of those features.

[0039] Reference Figure 1-13This invention proposes a sand-prevention sprinkler mechanism, characterized by comprising a base 1, a housing 2 and a connecting platform 10 on the base 1, a strip-shaped spray pipe 3 rotatably connected between the housing 2 and the connecting platform 10, the housing 2 having an outlet 21 communicating with the strip-shaped spray pipe 3, an inner cavity 22 and an inlet 23, the housing 2 having an impeller drive 24 and a transmission device 25 connected to the impeller drive 24 and the strip-shaped spray pipe 3, the housing 2 also having an adjustment device 4 capable of adjusting the water flow direction so that the water flow drives the impeller drive 24 to rotate in both directions, thereby driving the strip-shaped spray pipe 3 to rotate back and forth, the housing 2 also having a sealed cavity 221 for installing the transmission device 25, the opening of the sealed cavity 221 having a baffle plate 261 covering the sealed cavity 221, the baffle plate 261 having a connecting through hole 2611 to allow the transmission device 25 to connect to the impeller drive 24. 4. Water is injected from the inlet 23. The water flow and pressure drive the impeller drive 24 to rotate, causing the strip spray pipe 3 to swing and spray water. The adjusting device 4 adjusts the water flow direction to make the impeller drive 24 rotate forward or backward, thereby driving the transmission device 25 to drive the strip spray pipe 3 to swing back and forth to spray water. Since small hard particles such as sand and gravel often appear in the water source, these hard particles can easily get stuck on the transmission surface of the transmission device 25 during daily use, causing jamming and wear, reducing the service life of the product. The baffle plate 261 can block most of the water, allowing the remaining water to enter the sealing cavity 221 to lubricate the transmission device 25 and prevent hard particles from entering and jamming the transmission device 25. Since the impeller drive 24 needs to be connected to the transmission device 25, a connecting through hole 2611 is provided so that the transmission device 25 can be connected to the output end of the impeller drive 24.

[0040] Reference Figure 1-6 The transmission device 25 includes a gear assembly 251 that is connected to the impeller transmission component 24 and a pipe adapter 252 that is connected to the gear assembly 251 and detachably connected to the strip spray pipe 3. The outlet 21 is located on the pipe adapter 252. The gear assembly 251 is installed inside the sealing cavity 221, and its output end extends out of the housing 2. The pipe adapter 252 is located outside the housing 2, connected to the strip spray pipe 3, and meshes with the output end of the gear assembly 251. The outlet 21 is located on the pipe adapter. The part of the pipe adapter 252 that can transmit water and the entire gear assembly 251 can isolate the water source and connect the inner cavity 22 of the housing and the strip spray pipe 3. The pipe adapter 252 can simultaneously play the dual role of water transmission and back-and-forth swinging, and the structure is simple. The gear assembly 251 plays the role of speed change. The housing 2 divides the inner cavity 22 of the housing into a water passage cavity 222 and a sealing cavity 221 by setting the water-proof boss 26. The water flows through the inlet 23, the water passage cavity 222, the outlet 21 and the strip spray pipe 3 in sequence.

[0041] Reference Figure 2 and Figure 3The strip-shaped water spray pipe 3 is equipped with a groove 32, and the pipe adapter 252 is equipped with a buckle 2521 that can be snapped into the groove 32; the strip-shaped water spray pipe 3 has a large structure, and installation would be very troublesome if a conventional threaded structure were used, while the buckle installation is convenient and quick; through Figure 2 It can be seen that the diameter of the water inlet of the strip-shaped water spray pipe 3 gradually decreases, while Figure 3 It can be seen that the left side of the pipe adapter 252 is provided with a connecting sleeve for inserting the strip-shaped water spray pipe 3. The outer diameter of the connecting sleeve is smaller than the inner diameter of the clip 2521, which can make the installation of the strip-shaped water spray pipe 3 and the pipe adapter 252 more tight and prevent water leakage.

[0042] Reference Figure 5 , Figure 7 , Figure 12 and Figure 13 The impeller drive component 24 has an impeller cover 241 on the side near the inlet 23. The impeller cover 241 has a first through hole 2411 and a second through hole 2412. The adjusting device 4 includes a conversion wheel 41 rotatably connected to the impeller cover 241 and an angle adjusting device 42 that can be engaged with the conversion wheel 41. The conversion wheel 41 has a baffle 411 and has a first rotation position and a second rotation position. When the conversion wheel 41 rotates to the first rotation position, the baffle 411... When the conversion wheel 41 rotates to the second rotation position, the baffle 411 covers the first through hole 2411. The water flow and water pressure will provide power for the conversion wheel 41 to rotate. The angle adjustment device 42 can engage the conversion wheel 41 at different positions, so that the conversion wheel 41 can switch back and forth between the first rotation position and the second rotation position. When the water flows through the first through hole 2411 and the second through hole 2412, it drives the impeller transmission component 24 to rotate in different directions.

[0043] Reference Figure 5 , Figure 7 , Figure 12 and Figure 13 The angle adjustment device 42 includes an angle adjustment component 421 rotatably connected to the outside of the housing 2 and a switching rod 422 pulsator connected to the angle adjustment component 421. The conversion wheel 41 is provided with a locking part 412. The switching rod 422 is provided with a locking groove 4221 into which the locking part 412 can be inserted and a locking surface 4222 into which the locking part 412 can abut. The impeller cover 241 is provided with a limiting protrusion 2413. When the conversion wheel 41 rotates to the first rotation position, the locking part 412 is inserted into the locking groove 4221. When the conversion wheel 41 rotates to the second rotation position, the locking part 412 abuts against the locking surface 4222 and the switching rod 422 abuts against the limiting protrusion 2413.

[0044] Reference Figure 1-6The angle adjustment component 421 is provided with a mating through hole 4211, and the tube adapter 252 is provided with a protruding rib 2522 that is inserted into the mating through hole 4211 so that when the tube adapter 252 rotates, the protruding rib 2522 abuts against the inner side wall of the mating through hole 4211, thereby driving the angle adjustment component 421 to rotate and thus driving the switching rod 422 to rotate.

[0045] Reference Figure 1-6 The angle adjustment assembly 421 includes an angle adjuster 423, an angle control sleeve 424, and a stroke switching rod 425. The angle adjuster 423 has a mounting through hole 4231, and a connecting block 4232 with a wavy surface is provided on the inner side wall of the mounting through hole 4231. The angle control sleeve 424 has an external gear ring 4241 that is inserted into the mounting through hole 4231 and meshes with the connecting block 4232. The angle control sleeve 424 has a stroke protrusion 4242, and the stroke protrusion 4242 has a stroke through hole 4243. The stroke switching rod 425 has a stroke protrusion 4251 that is inserted into the stroke through hole 4243 and a switching through hole 4252 into which one end of the switching rod 422 can be inserted.

[0046] Reference Figure 6 The impeller cover 241 is provided with an impeller boss 2414, and an impeller groove 2415 is provided on the impeller boss 2414. The impeller drive component 24 is partially disposed in the impeller groove 2415. The first through hole 2411 and the second through hole 2412 are disposed in positions corresponding to the impeller groove 2415. The inner sidewall of the impeller groove 2415 has an inclination. When the water flows out from the first through hole 2411 or the second through hole 2412, it will flow in different directions, thereby driving the impeller drive component 24 to rotate in different directions.

[0047] Reference Figure 10 and Figure 11 The housing 2 is provided with a guide slope 231 and a guide baffle 27 at the water inlet 23 so that the conversion wheel 41 driven by the water flow always keeps rotating counterclockwise.

[0048] Reference Figure 5 , Figure 6 , Figure 12 and Figure 13 The upper part of the impeller cover 241 is equipped with a pressure reducing valve 5; the pressure reducing valve 5 can divert water flow and reduce water flow impact, thereby ensuring that the speed of the transmission device 25 is not too fast.

[0049] Reference Figure 1 and Figure 2The strip-shaped water spray pipe 3 is provided with at least two water spray pipes 31, and at least two water pipe protrusions 33 with different inclination directions. The water pipe protrusions 33 are provided with water pipe holes that communicate with the inside of the strip-shaped water spray pipe 3 and allow the water spray pipes 31 to be inserted. A hole cleaner 6 is inserted into one end of the strip-shaped water spray pipe 3. The different inclination directions can make the spraying area larger and more uniform, and the hole cleaner 6 prevents the strip-shaped water spray pipe 3 from being blocked.

[0050] The water flow process: Water enters through inlet 23, flows through water passage 222, outlet 21, strip spray pipe 3, and finally sprays out from spray pipe 31.

[0051] Rotation process: Water enters from the inlet 23 and flows in through the first through hole 2411 or the second through hole 2412. The water then drives the impeller transmission component 24 to rotate along the inner wall of the impeller groove 2415, which in turn drives the gear assembly 251 and the pipe adapter 252 to rotate in sequence. Since the pipe adapter 252 is attached to the strip spray pipe 3, the strip spray pipe 3 is also driven to rotate.

[0052] The reciprocating rotation process: Because the inlet 23 is equipped with a guide slope 231 and a guide baffle 27, the water flow continuously pushes the conversion wheel 41 to rotate counterclockwise. When the switching rod 422 rotates counterclockwise and the locking part 412 is inserted into the locking groove 4221, the conversion wheel 41 moves to the first rotation position, and the baffle 411 covers the second through hole 2412, allowing most of the liquid to flow in through the first through hole 2411 and drive the impeller drive component 24 to rotate. It should be noted that no matter which through hole the baffle 411 blocks, the water flow can flow in from both through holes, but the water flow in the unblocked through hole will be greater than that in the blocked through hole. Because the locking part 412 is hook-shaped, the counterclockwise rotation of the conversion wheel 41 will not disengage from the locking groove 4221. When the strip spray pipe 3 When rotated to a certain extent, the protruding rib 2522 on the pipe adapter 252 abuts against the mating through hole 4211 of the angle adjuster 423 and drives the angle adjuster 423 to rotate, which in turn drives the angle control sleeve 424, the stroke switching rod 425 and the switching rod 422 to rotate in sequence. The switching rod 422 rotates clockwise to make the locking part 412 disengage from the locking groove 4221. Then, the conversion wheel 41 rotates counterclockwise under the operation of water flow to make the locking part 412 abut against the locking plane 4222. Since the switching rod 422 abuts against the limiting protrusion 2413, the conversion wheel 41 is in the second rotation position. Most of the liquid flows in through the second through hole 2412 and begins to push the impeller transmission component 24 to rotate in the opposite direction, realizing the reverse rotation of the strip spray pipe 3. This process is repeated.

[0053] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct or indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A sand-prevention sprinkler mechanism, characterized in that, Includes a base (1), on which a housing (2) and a connecting platform (10) are provided. A strip-shaped water spray pipe (3) is rotatably connected between the housing (2) and the connecting platform (10). The housing (2) is provided with an outlet (21) that is connected to the strip-shaped water spray pipe (3), a housing cavity (22) and an inlet (23). The housing (2) is provided with an impeller drive component (24) and a transmission device (25) that is drively connected to the impeller drive component (24) and the strip-shaped water spray pipe (3). The housing (2) is also provided with an adjustment device (4) that can adjust the direction of water flow so that the water flow drives the impeller transmission component (24) to rotate in both directions and drive the strip spray pipe (3) to rotate back and forth. The housing (2) is also provided with a sealed cavity (221) for installing the transmission device (25). The opening of the sealed cavity (221) is provided with a baffle plate (261) covering the sealed cavity (221). The baffle plate (261) is provided with a connecting through hole (2611) so that the transmission device (25) can be connected to the output end of the impeller transmission component (24). The baffle (261) can block most of the water, allowing the remaining water to enter the sealed cavity (221) to lubricate the transmission device (25) and prevent hard particles from entering and jamming the transmission device (25). The impeller drive component (24) has an impeller cover (241) on the side near the water inlet (23). The impeller cover (241) has a first through hole (2411) and a second through hole (2412). The adjustment device (4) includes a conversion wheel (41) rotatably connected to the impeller cover (241) and an angle adjustment device (42) that can be engaged with the conversion wheel (41). The conversion wheel (41) has a baffle (411) with a first rotation position and a second rotation position. When the conversion wheel (41) rotates to the first rotation position, the baffle (411) covers the second through hole (2412). When the conversion wheel (41) rotates to the second rotation position, the baffle (411) covers the first through hole (2411).

2. The sand-prevention sprinkler mechanism according to claim 1, characterized in that, The transmission device (25) includes a gear assembly (251) that is connected to the impeller transmission component (24) and a pipe adapter (252) that is connected to the gear assembly (251) and detachably connected to the strip spray pipe (3). The water outlet (21) is provided on the pipe adapter (252).

3. The sand-prevention sprinkler mechanism according to claim 2, characterized in that, The strip-shaped water spray pipe (3) is provided with a slot (32), and the pipe adapter (252) is provided with a buckle (2521) that can be engaged in the slot (32).

4. The sand-prevention sprinkler mechanism according to claim 2, characterized in that, The angle adjustment device (42) includes an angle adjustment assembly (421) rotatably connected to the outside of the housing (2) and a switching rod (422) pulsator connected to the angle adjustment assembly (421). The conversion wheel (41) is provided with a snap-fit ​​part (412). The switching rod (422) is provided with a snap-fit ​​groove (4221) into which the snap-fit ​​part (412) can be inserted and a snap-fit ​​surface (4222) into which the snap-fit ​​part (412) can abut. The impeller cover (241) is provided with a limiting protrusion (2413). When the conversion wheel (41) rotates to the first rotation position, the snap-fit ​​part (412) is inserted into the snap-fit ​​groove (4221). When the conversion wheel (41) rotates to the second rotation position, the snap-fit ​​part (412) abuts against the snap-fit ​​surface (4222) and the switching rod (422) abuts against the limiting protrusion (2413). The angle adjustment component (421) is provided with a mating through hole (4211), and the tube adapter (252) is provided with a protruding rib (2522) inserted into the mating through hole (4211) so that when the tube adapter (252) rotates, the protruding rib (2522) abuts against the inner wall of the mating through hole (4211) to drive the angle adjustment component (421) to rotate, thereby driving the switching rod (422) to rotate.

5. The sand-prevention sprinkler mechanism according to claim 4, characterized in that, The angle adjustment assembly (421) includes an angle adjuster (423), an angle control sleeve (424), and a stroke switching rod (425). The angle adjuster (423) has a mounting through hole (4231), and the inner wall of the mounting through hole (4231) has a connecting block (4232) with a wavy surface. The angle control sleeve (424) has an external gear ring (4241) that is inserted into the mounting through hole (4231) and meshes with the connecting block (4232). The angle control sleeve (424) has a stroke protrusion (4242), and the stroke protrusion (4242) has a stroke through hole (4243). The stroke switching rod (425) has a stroke protrusion (4251) that is inserted into the stroke through hole (4243) and a switching through hole (4252) into which one end of the switching rod (422) can be inserted.

6. The sand-prevention sprinkler mechanism according to claim 1, characterized in that, The impeller cover (241) is provided with an impeller boss (2414), and the impeller boss (2414) is provided with an impeller groove (2415). The impeller transmission component (24) is partially disposed in the impeller groove (2415). The first through hole (2411) and the second through hole (2412) are disposed at positions corresponding to the impeller groove (2415).

7. The sand-prevention sprinkler mechanism according to claim 1, characterized in that, The housing (2) is provided with a guide ramp (231) and a guide baffle (27) at the water inlet (23) so that the conversion wheel (41) driven by the water flow always rotates counterclockwise.

8. The sand-prevention sprinkler mechanism according to claim 1, characterized in that, The upper part of the impeller cover (241) is provided with a pressure reducing valve (5).

9. A sand-prevention sprinkler mechanism according to claim 1, characterized in that, The strip-shaped water spray pipe (3) is provided with at least two water spray pipes (31), and the strip-shaped water spray pipe (3) is provided with at least two water pipe protrusions (33) with different inclination directions. The water pipe protrusions (33) are provided with water pipe holes that communicate with the interior of the strip-shaped water spray pipe (3) and allow the water spray pipes (31) to be inserted. A hole cleaner (6) is inserted into one end of the strip-shaped water spray pipe (3).

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