Spraying device for wharf

Abstract

The invention relates to the technical field of spraying, in particular to a wharf spraying device which comprises a bottom plate, universal wheels are symmetrically arranged at the bottom end of the bottom plate, a water supply unit is arranged at the top end of the bottom plate, and the wharf spraying device further comprises a spraying assembly which is rotationally arranged at the top end of the bottom plate and used for diluting leaked natural gas at a wharf; the spraying assembly comprises two nozzles which are opposite in spraying direction and are symmetrically arranged, sleeves which are fixedly mounted on the sides, close to each other, of the two nozzles, and a water guide cylinder which is rotationally inserted into the two sleeves in a penetrating manner, is connected with the water supply unit and is used for injecting water into the two nozzles. The spray head can reciprocate in the horizontal direction by rotating the adjusting mechanism, the spraying range is enlarged, meanwhile, through the design of the supporting mechanism, the spray head can synchronously ascend and descend in the reciprocating motion process, the spraying height of the spray head is changed, the spraying range is further enlarged, and the spraying efficiency is improved. The accumulation at the low-lying part of the deck is effectively reduced, so that the explosion risk probability can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of spraying technology, in particular to a wharf spraying device. BACKGROUND

[0002] With the rapid growth of liquefied natural gas (LNG) wharf throughput, the tanker in the process of filling operation will cause LNG leakage due to hose rupture, quick coupling loosening or operation error. The leaked natural gas will quickly vaporize to form a low-temperature natural gas vapor cloud, which is easy to accumulate in the low-lying place of the deck and increase the probability of explosion, thus posing a major safety threat to the wharf facilities, berthing ships and surrounding personnel. SUMMARY

[0003] Therefore, the present application aims to provide a wharf spraying device to solve the problem of the above-mentioned leaked natural gas accumulating in the low-lying place of the deck and increasing the probability of explosion.

[0004] In order to achieve the above purpose, the present application provides a wharf spraying device, which comprises a bottom plate, the bottom end of the bottom plate is symmetrically provided with universal wheels, and the top end of the bottom plate is provided with a water supply unit, further comprising: a spraying assembly rotatably arranged at the top end of the bottom plate for diluting the leaked natural gas on the wharf; The spraying assembly comprises two spray heads arranged symmetrically in opposite directions, a sleeve fixedly installed on the side close to the two spray heads, a water guide cylinder rotatably inserted into the two sleeves and connected with the water supply unit for injecting water into the two spray heads, a rotation adjusting mechanism arranged at the bottom end of the water guide cylinder and rotatably connected with the bottom plate for moving and spraying the spray heads, and a supporting mechanism arranged at the top end of the bottom plate for assisting the spray heads to ascend and spray.

[0005] Preferably, the rotation adjusting mechanism comprises a rotating cylinder rotatably installed at the top end of the bottom plate, a connecting column rotatably inserted into the top end of the rotating cylinder and fixedly connected with the bottom end of the water guide cylinder for synchronous rotation with the rotating cylinder, a sliding groove symmetrically arranged in the inner wall of the rotating cylinder, a convex strip arranged on the outer wall of the connecting column and sliding in the sliding groove, and a driving unit arranged at the top end of the bottom plate for driving the rotating cylinder to rotate forward and backward.

[0006] Preferably, the driving unit comprises a motor fixedly arranged at the top end of the bottom plate, a half gear connected with the output shaft of the motor, a gear fixedly sleeved on the rotating cylinder and engaged with the half gear, a spring I sleeved on the rotating cylinder below the gear, and the two ends of the spring I are respectively connected with the bottom plate and a protrusion fixedly arranged on the outer wall of the rotating cylinder.

[0007] Preferably, the support mechanism includes a connecting ring fixedly sleeved on the sleeve, a collar rotatably sleeved on the connecting ring, a threaded cylinder sleeved outside the rotating cylinder, a threaded seat threadedly sleeved on the threaded cylinder, a connecting rod fixedly installed on both sides of the threaded seat and fixedly connected to the outer wall of the collar, and a support member fixed to the top of the base plate for supporting the bottom end of the threaded cylinder.

[0008] Preferably, the support includes a fixing ring fixedly sleeved on the bottom end of the threaded cylinder, a fixing rod symmetrically installed on the bottom end of the fixing ring, a positioning rod fixedly installed on the top end of the base plate and symmetrically arranged, and a mounting base passing through the two positioning rods and fixedly connected to the bottom end of the fixing rod.

[0009] Preferably, the base plate is provided with a blowing unit, which includes fan blades and bevel gear one fixedly installed on the two sleeves, telescopic rods fixedly installed on the top of the base plate symmetrically arranged, bevel gear two fixedly connected to the top of the two telescopic rods and meshing with the two bevel gears one, and a stabilizing component provided on the sleeve for stabilizing the connection between bevel gear one and bevel gear two.

[0010] Preferably, the telescopic rod includes a support cylinder fixedly installed at the top of the base plate, a telescopic rod slidably inserted inside the support cylinder and fixedly connected to the bottom end of the second bevel gear, and a second spring installed inside the support cylinder and fixedly connected to the bottom end of the telescopic rod and the inner wall of the support cylinder.

[0011] Preferably, the stabilizing component includes a positioning ring located below the second bevel gear and coaxial with the threaded cylinder, a base fixedly mounted on the top of the positioning ring and sleeved on the sleeve, and a positioning block fixedly mounted on the telescopic rod for sliding contact with the upper and lower surfaces of the positioning ring.

[0012] Preferably, the water supply unit includes a water tank disposed at the top of the base plate, an inlet pipe installed on the water tank, a flow guide hose connected to one end of the inlet pipe, a locking seat two fixedly connected to one end of the flow guide hose, a rotating ring rotatably sleeved on the outer wall of the locking seat two, a connecting pipe connected to the top of the water guide tube, a locking seat one fixedly sleeved on the outer wall of the connecting pipe, and the locking seat one and the rotating ring being connected by symmetrically arranged bolts.

[0013] Preferably, the outer wall of the locking seat 2 and the inner wall of the collar are both fixedly provided with annular blocks, and the inner wall of the rotating ring and the outer wall of the connecting ring are both provided with annular grooves for the annular blocks to rotate.

[0014] The beneficial effects of this invention are as follows: By setting up a water guide tube, nozzle, sleeve, and water supply unit, water enters the nozzle through the water guide tube for spraying in the opposite direction. The design of the rotation adjustment mechanism can drive the water guide tube to swing, causing the nozzle to move back and forth in the horizontal direction, effectively increasing the spraying range. At the same time, the design of the support mechanism allows the nozzle to move up and down synchronously during the back and forth movement, realizing the change of the nozzle spraying height, thereby further increasing the spraying range. It can also promote the upward diffusion of the formed natural gas vapor cloud, effectively reducing its accumulation in the low-lying areas of the deck, and can dilute the leaked natural gas, thereby reducing the probability of explosion. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this invention or the prior art, 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 for this invention. 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 overall structure from one perspective of an embodiment of the present invention; Figure 2 This is a schematic diagram of the overall structure from another perspective of an embodiment of the present invention; Figure 3 For the present invention Figure 2 A sectional view; Figure 4 For the present invention Figure 3 Enlarged structural diagram of region A in the middle; Figure 5 For the present invention Figure 3 Enlarged structural diagram of region B in the middle; Figure 6 For the present invention Figure 3 A magnified structural diagram of region C in the middle.

[0017] The diagram is marked as follows: 1. Base plate; 2. Casters; 3. Rotating cylinder; 4. Water guide cylinder; 5. Nozzle; 6. Sleeve; 7. Connecting column; 8. Connecting ring; 9. Collar; 10. Annular block; 11. Connecting rod; 12. Threaded cylinder; 13. Threaded seat; 14. Fan blade; 15. Bevel gear one; 16. Positioning ring; 17. Base; 18. Support cylinder; 19. Telescopic rod; 20. Positioning block; 21. Bevel gear two; 22. Water tank; 23. Inlet pipe; 24. Flow guide hose; 25. Connecting pipe; 26. Motor; 27. Half gear; 28. Gear; 29. ​​Spring one; 30. Mounting seat; 31. Fixing rod; 32. Positioning rod; 33. Fixing ring; 34. Spring two; 35. Protruding strip; 36. Slide groove; 37. Locking seat one; 38. Locking seat two; 39. Rotating ring; 40. Annular groove. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0019] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] This specification provides one or more embodiments of a spraying device for a dock, such as... Figure 1 , Figure 2 and Figure 3 As shown, the system includes a base plate 1, with casters 2 symmetrically arranged at the bottom end of the base plate 1, and a water supply unit at the top end of the base plate 1. It also includes: A spraying assembly, rotatably mounted on top of base plate 1, is used to dilute leaked natural gas at the dock. The spraying assembly includes two nozzles 5 arranged symmetrically with opposite spraying directions, a sleeve 6 fixedly installed on one side of the two nozzles 5 close to each other, a water guide tube 4 rotatably inserted inside the two sleeves 6 and connected to the water supply unit for injecting water into the two nozzles 5, a rotation adjustment mechanism located at the bottom of the water guide tube 4 and rotatably connected to the base plate 1 for moving the nozzles 5 for spraying, and a support mechanism located at the top of the base plate 1 for assisting the nozzles 5 in lifting and lowering for spraying.

[0021] In use, staff move the device to the dock deck and work at the location of the natural gas leak. They start the water pump connected to the water supply unit to inject water into the water guide tube 4. The water in the water guide tube 4 enters the nozzles 5 for spraying, allowing the two nozzles 5 to spray in opposite directions. Simultaneously, the design of the rotating adjustment mechanism can drive the water guide tube 4 to swing, which in turn causes the nozzles 5 to move back and forth in the horizontal direction, thereby increasing the spray range. At the same time, the design of the support mechanism allows the nozzles 5 to move up and down synchronously during the back and forth movement, realizing the change of the spray height of the nozzles 5, which further increases the spray range and can push the formed natural gas vapor cloud upward to diffuse, effectively reducing its accumulation in low-lying areas of the deck and diluting the leaked natural gas, thereby reducing the probability of explosion.

[0022] In embodiments of the present invention, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the rotation adjustment mechanism includes a rotating cylinder 3 rotatably mounted on the top of the base plate 1, a connecting column 7 inserted through the top of the rotating cylinder 3 and fixedly connected to the bottom of the water guide cylinder 4 for synchronous rotation with the rotating cylinder 3, a sliding groove 36 symmetrically formed on the inner wall of the rotating cylinder 3, a protruding strip 35 disposed on the outer wall of the connecting column 7 and sliding inside the sliding groove 36, and a drive unit disposed on the top of the base plate 1 for driving the rotating cylinder 3 to rotate forward and backward. With this design, the rotating cylinder 3 can be rotated by the drive unit, which in turn drives the sliding groove 36 to rotate. Through the engaging action between the sliding groove 36 and the protruding strip 35, the protruding strip 35 will rotate synchronously with the connecting column 7, which in turn causes the connecting column 7 to rotate the water guide cylinder 4. This causes the two nozzles 5 to rotate around the rotating cylinder 3, thus facilitating changes in the spraying direction of the nozzles 5 and effectively increasing the spraying range.

[0023] In embodiments of the present invention, such as Figure 1 , Figure 2 and Figure 3As shown, the drive unit includes a motor 26 fixedly mounted on the top of the base plate 1. The output shaft of the motor 26 is connected to a half-gear 27. A gear 28, meshing with the half-gear 27, is fixedly sleeved on the rotating cylinder 3. A spring 29, located below the gear 28, is sleeved on the rotating cylinder 3. The two ends of the spring 29 are respectively connected to the base plate 1 and a protrusion fixed to the outer wall of the rotating cylinder 3. With this design, when the motor 26 is started, it drives the half-gear 27 to rotate. Through the meshing connection between the half-gear 27 and the gear 28, the gear 28 drives the rotating cylinder 3 to rotate, causing the spring 29 to generate elastic force. When the half-gear 27 continues to rotate and disengages from the gear 28, the spring force of the spring 29 causes the rotating cylinder 3 to rotate in the opposite direction, realizing the reciprocating movement of the nozzle 5 around the rotating cylinder 3, thereby increasing the spraying range.

[0024] In embodiments of the present invention, such as Figure 1 , Figure 2 and Figure 3 As shown, the support mechanism includes a connecting ring 8 fixedly sleeved on the sleeve 6, a collar 9 rotatably sleeved on the connecting ring 8, a threaded cylinder 12 sleeved on the outside of the rotating cylinder 3, a threaded seat 13 threadedly sleeved on the threaded cylinder 12, a connecting rod 11 fixedly installed on both sides of the threaded seat 13 and fixedly connected to the outer wall of the collar 9, and a support member fixed to the top of the base plate 1 for supporting the bottom end of the threaded cylinder 12. This design, through the support member, fixes the threaded cylinder 12. When the water guide tube 4 drives the nozzle 5 to rotate around the rotating cylinder 3, the sleeve 6 will cause the connecting ring 8 and collar 9 to move synchronously. This will cause the collar 9 to drive the threaded seat 13 to rotate on the threaded cylinder 12 via the connecting rod 11. Due to the threaded connection between the threaded seat 13 and the threaded cylinder 12, the threaded seat 13 will rotate and rise on the threaded cylinder 12, causing the nozzle 5 to move synchronously up and down during its rotation around the rotating cylinder 3, further increasing the spraying range and improving the water spraying effect.

[0025] In embodiments of the present invention, such as Figure 1 , Figure 2 and Figure 3 As shown, the support includes a fixing ring 33 fixedly sleeved on the bottom end of the threaded cylinder 12, fixing rods 31 symmetrically installed on the bottom end of the fixing ring 33, positioning rods 32 fixedly installed on the top end of the base plate 1 and symmetrically arranged, and a mounting seat 30 passing through the two positioning rods 32 and fixedly connected to the bottom end of the fixing rods 31. With this design, the operator inserts the mounting seat 30 onto the positioning rods 32, effectively positioning the mounting seat 30. This, in turn, supports the threaded cylinder 12 through the fixing rods 31 and the mounting seat 30, preventing the threaded cylinder 12 from rotating when the threaded seat 13 rotates, thus allowing the threaded seat 13 to move up and down on the threaded cylinder 12.

[0026] In embodiments of the present invention, such as Figure 1 , Figure 2 and Figure 3 As shown, the base plate 1 is provided with a blowing unit, which includes fan blades 14 and bevel gear 15 fixedly installed on the two sleeves 6, telescopic rods fixedly installed symmetrically on the top of the base plate 1, bevel gear 21 fixedly connected to the top of the two telescopic rods and meshing with the two bevel gears 15, and a stabilizing component provided on the sleeve 6 for stabilizing the connection between bevel gear 15 and bevel gear 21. With this design, when the connecting column 7 drives the water guide cylinder 4 and the nozzle 5 to rotate, the sleeve 6 will cause the fan blade 14 and the bevel gear 15 to move synchronously. This facilitates the movement of the bevel gear 15 on the bevel gear 21. Through the meshing connection between the bevel gear 15 and the bevel gear 21, the bevel gear 15 will rotate. Consequently, the bevel gear 15 will rotate the nozzle 5 through the sleeve 6. This effectively allows the nozzle 5 to move up and down while rotating around the rotating cylinder 3 and simultaneously rotate on its own axis. This, in turn, enables the fan blade 14 to rotate. The wind generated by the rotation of the fan blade 14 blows the water, which can increase the water spray range and effectively improve the dilution effect of natural gas.

[0027] In embodiments of the present invention, such as Figure 1 , Figure 2 and Figure 3 As shown, the telescopic rod includes a support cylinder 18 fixedly mounted on the top of the base plate 1, a telescopic rod 19 slidably inserted inside the support cylinder 18 and fixedly connected to the bottom end of the second bevel gear 21, and a second spring 34 disposed inside the support cylinder 18 and fixedly connected to the bottom end of the telescopic rod 19 and the inner wall of the support cylinder 18. This design facilitates the synchronous lifting and lowering of the second bevel gear 21 during the raising and lowering of the nozzle 5, allowing the second bevel gear 21 to drive the telescopic rod 19 to slide and rise and fall inside the support cylinder 18 during the lifting and lowering process, effectively providing the possibility for a stable connection between the first bevel gear 15 and the second bevel gear 21.

[0028] In embodiments of the present invention, such as Figure 1 , Figure 2 and Figure 3 and Figure 5As shown, the stabilizing component includes a positioning ring 16 located below the second bevel gear 21 and coaxial with the threaded cylinder 12; a base 17 fixedly mounted on the top of the positioning ring 16 and sleeved on the sleeve 6; and a positioning block 20 fixedly mounted on the telescopic rod 19 for sliding contact with the upper and lower surfaces of the positioning ring 16. With this design, when the nozzle 5 rotates around the rotating cylinder 3, the first bevel gear 15 moves on the second bevel gear 21. During the spraying process, the nozzle 5 rises and falls, causing the first bevel gear 15 to move upwards, which in turn causes the base 17 to move the positioning ring 16 upwards. Through the sliding action between the positioning block 20 and the positioning ring 16, the positioning block 20 causes the telescopic rod 19 to move upwards synchronously, effectively achieving a stable connection between the first bevel gear 15 and the second bevel gear 21, thereby providing stability for the rotation of the nozzle 5 and the fan blade 14.

[0029] In embodiments of the present invention, such as Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, the water supply unit includes a water tank 22 disposed at the top of the base plate 1. A water inlet pipe 23 is installed on the water tank 22. One end of the water inlet pipe 23 is connected to a flow guide hose 24. One end of the flow guide hose 24 is fixedly connected to a locking seat 28. A rotating ring 39 is rotatably sleeved on the outer wall of the locking seat 28. A connecting pipe 25 is connected to the top of the water guide cylinder 4. A locking seat 1 37 is fixedly sleeved on the outer wall of the connecting pipe 25. The locking seat 1 37 and the rotating ring 39 are connected by symmetrically arranged bolts. This design, through the connection of the rotating ring 39 and the locking seat 37, effectively connects the guide hose 24 and the connecting pipe 25, facilitating the drawing of water from the water tank 22 into the inlet pipe 23 and into the guide hose 24. This allows the water to enter the water guide cylinder 4 through the connecting pipe 25 and be injected into the nozzle 5, enabling the nozzle 5 to spray. Since the nozzle 5 will rise and fall and rotate around the rotating cylinder 3 during the water spraying process, the design of the guide hose 24 effectively enables the raising and lowering of the nozzle 5. Furthermore, the rotational connection between the rotating ring 39 and the locking seat 38 effectively enables the water guide cylinder 4 to drive the connecting pipe 25 to rotate below the guide hose 24.

[0030] In embodiments of the present invention, such as Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, annular blocks 10 are fixedly provided on the outer wall of the locking seat 38 and the inner wall of the collar 9. Annular grooves 40 for the rotation of the annular blocks 10 are provided on the inner wall of the rotating ring 39 and the outer wall of the connecting ring 8. This design, through the rotational design of the annular blocks 10 and the annular grooves 40, effectively facilitates the rotation of the rotating ring 39 on the locking seat 38 and the rotation of the collar 9 on the connecting ring 8, thereby enabling the nozzle 5 to rotate and for the nozzle 5 to drive the water guide tube 4 to rotate around the rotating cylinder 3.

[0031] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0032] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A spraying device for a dock, comprising a base plate (1), wherein casters (2) are symmetrically provided at the bottom end of the base plate (1), and a water supply unit is provided at the top end of the base plate (1), characterized in that, Also includes: A spraying assembly, rotatably mounted on the top of the base plate (1), is used to dilute leaked natural gas at the dock; The spraying assembly includes two nozzles (5) with opposite spraying directions and symmetrical arrangement, a sleeve (6) fixedly installed on the side of the two nozzles (5) close to each other, a water guide tube (4) rotatably inserted inside the two sleeves (6) and connected to the water supply unit for injecting water into the two nozzles (5), a rotation adjustment mechanism set at the bottom end of the water guide tube (4) and rotatably connected to the base plate (1) for moving the nozzles (5) for spraying, and a support mechanism set at the top of the base plate (1) for assisting the nozzles (5) in lifting and spraying.

2. The spraying device for docks according to claim 1, characterized in that, The rotation adjustment mechanism includes a rotating cylinder (3) rotatably mounted on the top of the base plate (1), a connecting column (7) inserted through the top of the rotating cylinder (3) and fixedly connected to the bottom of the water guide cylinder (4) for synchronous rotation with the rotating cylinder (3), a sliding groove (36) symmetrically opened on the inner wall of the rotating cylinder (3), a protrusion (35) set on the outer wall of the connecting column (7) and sliding inside the sliding groove (36), and a drive unit set on the top of the base plate (1) for driving the rotating cylinder (3) to rotate forward and backward.

3. The spraying device for docks according to claim 2, characterized in that, The drive unit includes a motor (26) fixedly mounted on the top of the base plate (1). The output shaft of the motor (26) is connected to a half gear (27). A gear (28) that meshes with the half gear (27) is fixedly sleeved on the rotating cylinder (3). A spring (29) located below the gear (28) is sleeved on the rotating cylinder (3). The two ends of the spring (29) are respectively connected to the base plate (1) and a protrusion fixed to the outer wall of the rotating cylinder (3).

4. The spraying device for docks according to claim 2, characterized in that, The support mechanism includes a connecting ring (8) fixedly sleeved on the sleeve (6), a collar (9) rotatably sleeved on the connecting ring (8), a threaded cylinder (12) sleeved on the outside of the rotating cylinder (3), a threaded seat (13) threadedly sleeved on the threaded cylinder (12), a connecting rod (11) fixedly installed on both sides of the threaded seat (13) and fixedly connected to the outer wall of the collar (9), and a support member fixed to the top of the base plate (1) for supporting the bottom end of the threaded cylinder (12).

5. The spraying device for docks according to claim 4, characterized in that, The support includes a fixing ring (33) fixedly sleeved on the bottom end of the threaded cylinder (12), a fixing rod (31) symmetrically installed on the bottom end of the fixing ring (33), a positioning rod (32) fixedly installed on the top end of the base plate (1) and symmetrically arranged, and a mounting seat (30) passing through the two positioning rods (32) and fixedly connected to the bottom end of the fixing rod (31).

6. The spraying device for docks according to claim 4, characterized in that, The base plate (1) is provided with a blowing unit, which includes a fan blade (14) and a bevel gear (15) fixedly installed on the two sleeves (6), a telescopic rod fixedly installed on the top of the base plate (1) symmetrically arranged, a bevel gear (21) fixedly connected to the top of the two telescopic rods and meshing with the two bevel gears (15), and a stabilizing component provided on the sleeve (6) for stabilizing the connection between the bevel gears (15) and the bevel gears (21).

7. The spraying device for docks according to claim 6, characterized in that, The telescopic rod includes a support cylinder (18) fixedly installed at the top of the base plate (1), a telescopic rod (19) slidably inserted inside the support cylinder (18) and fixedly connected to the bottom end of the bevel gear (21), and a spring (34) installed inside the support cylinder (18) and fixedly connected to the bottom end of the telescopic rod (19) and the inner wall of the support cylinder (18).

8. The spraying device for docks according to claim 7, characterized in that, The stabilizing component includes a positioning ring (16) located below the bevel gear (21) and coaxial with the threaded cylinder (12), a base (17) fixedly mounted on the top of the positioning ring (16) and sleeved on the sleeve (6), and a positioning block (20) fixedly mounted on the telescopic rod (19) for sliding contact with the upper and lower surfaces of the positioning ring (16).

9. The spraying device for a dock according to claim 6, characterized in that, The water supply unit includes a water tank (22) installed at the top of the base plate (1). A water inlet pipe (23) is installed on the water tank (22). One end of the water inlet pipe (23) is connected to a flow guide hose (24). One end of the flow guide hose (24) is fixedly connected to a locking seat two (38). A rotating ring (39) is rotatably sleeved on the outer wall of the locking seat two (38). A connecting pipe (25) is connected to the top of the water guide cylinder (4). A locking seat one (37) is fixedly sleeved on the outer wall of the connecting pipe (25). The locking seat one (37) and the rotating ring (39) are connected by symmetrically arranged bolts.

10. The spraying device for a dock according to claim 9, characterized in that, The outer wall of the locking seat (38) and the inner wall of the collar (9) are both fixed with an annular block (10), and the inner wall of the rotating ring (39) and the outer wall of the connecting ring (8) are both provided with an annular groove (40) for the annular block (10) to rotate.

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