Watering cannon

Abstract

The utility model relates to the technical field of water cannon, and discloses a water cannon which comprises a fixing assembly and a three-way assembly, and a liquid inlet flow channel is formed in the fixing assembly; the three-way assembly comprises a bearing, a three-way piece and a first sealing ring, the three-way piece is provided with a first liquid inlet and two first liquid outlets which are communicated, the first liquid inlet is communicated with the liquid inlet flow channel, the three-way piece is rotationally connected to the fixing assembly through the bearing, and the first sealing ring is arranged between the three-way piece and the fixing assembly and attached to the three-way piece and the fixing assembly in a sealed mode. According to the utility model, the three-way piece is rotationally connected with the fixing assembly through the bearing, so that the three-way piece can rotate relative to the fixing assembly, and a gap between the three-way piece and the fixing assembly can be rotationally sealed by arranging the first sealing ring.

Description

TECHNICAL FIELD

[0001] The utility model relates to a water sprinkling cannon technical field, concretely relates to a water sprinkling cannon. BACKGROUND

[0002] Water sprinkling cannon (also known as water sprinkling gun, high pressure spray gun) is the core accessory of water sprinkling truck, mainly used for converting pressurized water flow into various spray modes (such as columnar, mist), and realizing efficient operation through remote control.

[0003] The utility model discloses a water sprinkling cannon, including three -way bend neck and with its connection long barrel, with long barrel connection spray head, three -way bend neck both ends bending portion between being equipped with three -way, three -way upper and lower ends respectively with three -way bend neck both ends bending portion intercommunication, and intercommunication is equipped with positioning frame, positioning frame passes through small flange and is connected with three -way bend neck, three -way one end is equipped with big flange plate, and big flange plate is equipped with three -way sleeve wire, long barrel is equipped with pull rod, and long barrel is equipped with a layer of inner cover, and the inner core is equipped in spray head, and the inner core one end with the inner cover intercommunication.Three -way bend neck and three -way connection place can rotate, and the angle is 180 degrees, three -way sleeve wire and big flange plate connection place can rotate, and the angle is 360 degrees, and spray head and long barrel connection place can rotate, and carry out water spraying.

[0004] The water sprinkling cannon can adjust the water spraying direction of the spray head by 360 degrees in the horizontal plane through the rotating connection of the three-way sleeve wire and the big flange plate, but since the three-way sleeve wire and the big flange plate are connected by sleeving, the rotating friction between them is large, the rotating damping is large, and there is water leakage. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the above technical insufficient, proposes a water sprinkling cannon, solves the technical problem of large rotating damping and water leakage between three -way and big flange plate when rotating in prior art.

[0006] In order to achieve the above technical purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides a fixed assembly, forms liquid inlet channel, and

[0008] Three -way assembly, including bearing, three -way piece and first sealing ring, the three -way piece has the first liquid inlet and two first liquid outlets that are communicated, the first liquid inlet is communicated with the liquid inlet channel, and the three -way piece is rotatably connected to the fixed assembly through the bearing, and the first sealing ring is arranged between the three -way piece and the fixed assembly and seals the three -way piece and the fixed assembly.

[0009] In one embodiment, the liquid inlet end of the three -way piece is rotatably inserted into the liquid inlet channel.

[0010] The bearing sleeve is arranged at the liquid inlet end of the tee joint, and the inner ring of the bearing is connected to the liquid inlet end of the tee joint, and the outer ring is connected to the fixing assembly.

[0011] In one embodiment, the inner ring of the first sealing ring is attached to the outer wall of the tee joint, and the outer ring is attached to the inner wall of the liquid inlet channel.

[0012] In one embodiment, the outer wall of the tee joint forms a limiting portion, which abuts against the fixing assembly.

[0013] In one embodiment, the fixing assembly forms an abutting structure that abuts against one end of the bearing.

[0014] The tee joint assembly further comprises a limiting member, which abuts against the other end of the bearing and is detachably connected to the tee joint.

[0015] In one embodiment, the tee joint assembly further comprises a tee joint elbow, which has two second liquid inlet openings and one second liquid outlet opening, and the two second liquid inlet openings of the tee joint elbow are respectively connected to the two first liquid outlet openings of the tee joint.

[0016] In one embodiment, the tee joint elbow is rotatably connected to the tee joint, and the rotation axis of the tee joint elbow is perpendicular to the rotation axis of the tee joint.

[0017] In one embodiment, the water sprinkling cannon further comprises a spray head assembly, which comprises:

[0018] a long tube, one end of which is connected to the second liquid outlet opening of the tee joint elbow;

[0019] a spray head, which is threadedly connected to the other end of the long tube; and

[0020] a spray piece, which is built in the spray head and connected to the other end of the long tube, and forms a liquid spraying gap between the spray piece and the inner wall of the spray head.

[0021] In one embodiment, the liquid inlet end of the spray head is threadedly connected to the outer wall of the other end of the long tube.

[0022] The spray head assembly further comprises two second sealing rings, which are arranged between the long tube and the spray head and are spaced apart.

[0023] In one embodiment, the spray piece includes a spray plate, a screw rod, a connecting rod, and the spray plate is arranged in the spray head, the screw rod is screwed with the other end of the long barrel, one end of the connecting rod is connected with the screw rod and the other end is connected with the spray plate, and the outer diameter of the connecting rod is larger than that of the screw rod.

[0024] Compared with the prior art, the water cannon provided by the utility model can realize 360° rotation of the three-way piece relative to the fixed assembly, and the rotation damping of the three-way piece can be reduced through the bearing, so that the rotation of the three-way piece relative to the fixed assembly is facilitated, and the leakage of water between the three-way piece and the fixed assembly is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structure schematic view of the water cannon provided by an embodiment of the utility model;

[0026] Figure 2 is a structure schematic view of the water cannon provided by an embodiment of the utility model;

[0027] Figure 3 is Figure 2 is a partial enlarged view of B in FIG.

[0028] Figure 4 is Figure 2 is a partial enlarged view of C in FIG.

[0029] Figure 5 is a partial structure schematic view of the limiting piece in the water cannon provided by an embodiment of the utility model;

[0030] Figure 6 is a partial structure schematic view of the long barrel and the spray piece in the water cannon provided by an embodiment of the utility model.

[0031] BRIEF DESCRIPTION OF DRAWINGS

[0032] fixed assembly 1, first barrel 11, fixed ring 12, second barrel 13, flange plate 14;

[0033] three-way assembly 2, bearing 21, three-way piece 22, first sealing ring 23, limiting part 24, limiting piece 25, three-way bent neck 26;

[0034] Nozzle assembly 3; long barrel 31; nozzle 32; nozzle piece 33; nozzle piece 331; screw rod 332; connecting rod 333; annular protrusion 34; second sealing ring 35. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0036] In order to solve the technical problem of large rotation damping between the tee joint and the large flange when rotating, the utility model provides a sprinkler, which can reduce the damping when the tee joint rotates relative to the flange.

[0037] Please refer to Figure 3 , Figure 3 It is a sectional view of the partial structure of the sprinkler in an embodiment of the utility model, which comprises a fixed assembly 1 and a tee joint assembly 2. The fixed assembly 1 forms a liquid inlet channel. The tee joint assembly 2 comprises a bearing 21 and a tee joint 22. The tee joint 22 has a first liquid inlet and two first liquid outlets connected in communication. The first liquid inlet is connected in communication with the liquid inlet channel. The tee joint 22 is rotatably connected to the fixed assembly 1 through the bearing 21.

[0038] When the sprinkler works, water enters the fixed assembly 1 through the liquid inlet channel, then enters the tee joint 22 through the first liquid inlet, and flows out of the tee joint 22 from the two first liquid outlets. When it is necessary to adjust the angle between the tee joint 22 and the fixed assembly 1, the tee joint 22 is rotated, so that the tee joint 22 can rotate 360° relative to the fixed assembly 1. Since the tee joint 22 is connected to the fixed assembly 1 through the bearing 21, the rotation damping of the tee joint 22 when rotating can be reduced by setting the bearing 21, which facilitates the rotation of the tee joint 22 relative to the fixed assembly 1.

[0039] It should be understood that the tee joint 22 can be various types of tee joints, such as Y-shaped tee joint, T-shaped tee joint, etc.

[0040] It should be understood that the bearing 21 can be a deep groove ball bearing 21, a self-aligning roller bearing 21, a roller bearing 21, etc.

[0041] Since the fixed assembly 1 and the tee joint assembly 2 are rotatably connected through the bearing 21, a gap exists between the tee joint assembly 2 and the fixed assembly 1. Therefore, as shown in Figure 2 and Figure 3 In one embodiment, the tee joint assembly 2 further comprises a first sealing ring 23, which is arranged between the tee joint 22 and the fixed assembly 1, and seals the tee joint 22 and the fixed assembly 1.

[0042] By setting the first sealing ring 23, the first sealing ring 23 can seal the gap between the three-way piece 22 and the fixed assembly 1, and can avoid water leakage from the rotating three-way piece 22 and the fixed assembly 1.

[0043] It should be understood that the three-way piece 22 can be sleeved on the fixed assembly 1, or can be rotatably arranged in the fixed assembly 1. Specifically, as shown in Figures 1 to 3 In one of the embodiments, the liquid inlet end of the three-way piece 22 is rotatably arranged in the liquid inlet flow channel; the bearing 21 is sleeved on the liquid inlet end of the three-way piece 22, and the inner ring of the bearing 21 is connected to the liquid inlet end of the three-way piece 22, and the outer ring is connected to the fixed assembly 1.

[0044] In the embodiment, the liquid inlet end of the three-way piece 22 is rotatably arranged in the liquid inlet flow channel, so that the three-way piece 22 can rotate relative to the liquid inlet flow channel to realize the rotation of the three-way piece 22 relative to the fixed assembly 1.

[0045] Since the liquid inlet end of the three-way piece 22 is rotatably arranged in the liquid inlet end of the fixed assembly 1, as shown in Figure 3 In one of the embodiments, the inner ring of the first sealing ring 23 is attached to the outer wall of the three-way piece 22, and the outer ring is attached to the inner wall of the liquid inlet flow channel.

[0046] By attaching the inner ring of the first sealing ring 23 to the outer wall of the three-way piece 22 and attaching the outer ring to the inner wall of the liquid inlet flow channel, when the three-way piece 22 rotates relative to the fixed assembly 1, the first sealing ring 23 can rotate to seal the gap between the three-way piece 22 and the fixed assembly 1.

[0047] In order to position the position of the three-way piece 22 and the fixed assembly 1 in the circumferential direction, in one of the embodiments, the outer wall of the three-way piece 22 forms a limiting portion 24, and the limiting portion 24 abuts against the fixed assembly 1.

[0048] By setting the limiting portion 24, when the three-way piece 22 is arranged in the liquid inlet flow channel, the limiting portion 24 on the three-way piece 22 abuts against the fixed assembly 1, which can limit the insertion depth of the three-way piece 22.

[0049] It should be understood that the limiting portion 24 can be a limiting protrusion, a limiting tooth, a limiting block, etc. Specifically, as shown in Figure 4 In one of the embodiments, the limiting portion 24 is an annular protrusion, the limiting portion 24 is coaxially arranged with the liquid inlet end of the three-way piece 22, and the annular protrusion is arranged to abut against the end portion of the fixed assembly 1.

[0050] In the embodiment, by setting the limiting portion 24 as an annular protrusion, the annular protrusion can abut against the end portion of the fixed assembly 1, which can further seal the fixed assembly 1 and the three-way piece 22.

[0051] Since the bearing 21 is only arranged between the fixed assembly 1 and the tee joint 22, the bearing 21 can be moved along the axial direction of the liquid inlet end of the tee joint 22 relative to the tee joint 22. Therefore, as shown in one of the embodiments, Figure 3 the fixed assembly 1 is formed with an abutting structure abutting one end of the bearing 21; and the tee joint assembly 2 further comprises a limiting member 25 abutting the other end of the bearing 21 and detachably connected with the tee joint 22.

[0052] In the embodiment, the abutting structure formed by the fixed assembly 1 abuts one end of the bearing 21, and the other end of the bearing 21 is abutted by the limiting member 25, so that the axial direction of the bearing 21 can be limited, and the bearing 21 can be prevented from sliding along the axial direction of the tee joint assembly 2. Since the bearing 21 needs to be sleeved on the tee joint 22, and the limiting member 25 will hinder the sleeving of the bearing 21, in the embodiment, the bearing 21 is detachably connected with the limiting member 25. When the bearing 21 is installed, the limiting member 25 is detached from the end of the tee joint 22, and then the bearing 21 is sleeved on the tee joint 22 and slid to a set position of the tee joint 22. At this time, the limiting member 25 is connected with the tee joint 22, and the bearing 21 is limited.

[0053] It should be understood that the detachable connection between the limiting member 25 and the tee joint 22 can be achieved by bolts, screws, buckles and the like. Specifically, as shown in one of the embodiments, Figure 4 the limiting member 25 is connected with the tee joint 22 by bolts.

[0054] It should be understood that the fixed assembly 1 can be a fixed disc, a fixed flange, a fixed cylinder and the like, and the fixed assembly 1 is used to be fixed to the watering cart.

[0055] Specifically, as shown in one of the embodiments, Figure 3 the fixed assembly 1 comprises a first cylinder body 11, a fixed ring 12, a second cylinder body 13 and a flange plate 14. The second cylinder body 13 is coaxial with the first cylinder body 11, and the second cylinder body 13 is connected with the first cylinder body 11 through the fixed ring 12. The inner diameter of the second cylinder body 13 is smaller than that of the first cylinder body 11, and the flange plate 14 is fixedly sleeved on the first cylinder body 11. The end of the second cylinder body 13 away from the first cylinder body 11 abuts the fixed assembly 1. The fixed ring 12 abuts one end of the bearing 21, and the fixed ring 12 is the abutting structure. The first sealing ring 23 is arranged between the tee joint 22 and the second cylinder body 13.

[0056] In the embodiment, the first barrel 11, the second barrel 13 and the fixing ring 12 are arranged to form a containing space for containing the bearing 21, so that the bearing 21 can be fixed in the first barrel 11 and limited by one end of the fixing ring 12. The second barrel 13 is arranged to abut against the limiting part 24, so as to limit the axial positions of the first barrel 11, the fixing ring 12, the second barrel 13 and the flange 14. The flange 14 is arranged to be connected with the flange of the water outlet pipeline of the water spraying vehicle, so as to be connected with the water spraying vehicle.

[0057] It should be understood that, as shown in one of the embodiments, Figure 5 The limiting part 25 is arranged in the first barrel 11, and the limiting part 25 is in the form of a ring. A third sealing ring (not shown in the figure) is arranged between the circumferential wall of the limiting part 25 and the inner wall of the first barrel 11.

[0058] The limiting part 25 is arranged in the first barrel 11, and the limiting part 25 is in the form of a ring. A third sealing ring (not shown in the figure) is arranged between the circumferential wall of the limiting part 25 and the inner wall of the first barrel 11.

[0059] It should be understood that, the cross section of the third sealing ring can be square, circular, etc. Specifically, the cross section of the third sealing ring is triangular, and the outer diameter of the third sealing ring gradually increases in the direction away from the fixing ring 12. When water enters the first barrel 11, the water pressure will cause the third sealing ring to bend and deform towards the fixing ring 12. The deformed third sealing ring can seal the gap between the limiting part 25 and the inner wall of the first barrel 11. When the water supply to the first barrel 11 is stopped, the third sealing ring is reset under the action of its own elasticity. The water remaining between the third sealing ring and the first sealing ring 23 will flow out from the gap between the limiting part 25 and the first barrel 11 under the action of gravity.

[0060] In order to combine the water flowing out of the two first liquid outlets of the three-way piece 22, as shown in one of the embodiments, Figure 1 and Figure 2 The three-way assembly 2 further comprises a three-way bent neck 26. The three-way bent neck 26 has two second liquid inlets and one second liquid outlet. The two second liquid inlets of the three-way bent neck 26 are respectively connected with the two first liquid outlets of the three-way piece 22.

[0061] The water flowing from the two first outlets of the tee fitting 22 enters the two second inlets of the tee bend 26 respectively, and then merges at the second outlet of the tee bend 26. After merging, it is sprayed out. The combination of the tee fitting 22 and the tee bend 26 can increase the diameter of the inlet and increase the water flow rate. After merging in the tee bend 26, it can increase the water spray pressure.

[0062] Based on the rotatable tee 22, in order to further adjust the spray angle of the water cannon, for example, Figure 1 and Figure 2 As shown, in one embodiment, the tee elbow 26 is rotatably connected to the tee member 22, and the rotation axis of the tee elbow 26 is perpendicular to the rotation axis of the tee member 22.

[0063] In this embodiment, the tee bend 26 and the tee member 22 are rotatably connected, allowing the tee bend 26 to rotate relative to the tee member 22. By making the rotation axis of the tee bend 26 perpendicular to the rotation axis of the tee member 22, when the fixing component 1 is vertically set, the tee member 22 can rotate 360° in the horizontal plane. By making the rotation axis of the tee bend 26 perpendicular to the rotation axis of the tee member 22, the tee bend 26 can rotate relative to the tee member 22 to adjust the pitch angle of the water cannon.

[0064] In order to adjust the spray pattern of the water cannon, for this reason, such as Figure 4 and Figure 6 As shown, in one embodiment, the water cannon further includes a nozzle assembly 3, which includes a long cylinder 31, a nozzle 32, and a spray blade 33. One end of the long cylinder 31 is connected to the second liquid outlet of the three-way bend 26; the nozzle 32 is threadedly connected to the other end of the long cylinder 31; the spray blade 33 is built into the nozzle 32 and connected to the other end of the long cylinder 31, and a spray gap is formed between the spray blade 33 and the inner wall of the nozzle 32.

[0065] In this embodiment, the water converging in the three-way bend 26 enters the long tube 31 and then enters the nozzle 32. Finally, it is sprayed out from the spray gap between the nozzle 32 and the spray blade 33. By setting the spray blade 33, the spray pattern of the nozzle 32 can be adjusted. When it is necessary to adjust the spray pattern of the water cannon, the nozzle 32 is rotated. The rotating nozzle 32 slides relative to the spray blade 33, which can adjust the position of the nozzle 32 relative to the spray blade 33 and adjust the shape of the spray gap, thereby adjusting the spray pattern of the nozzle 32.

[0066] It should be understood that the long cylinder 31 and the tee elbow 26 can be detachably connected by threads, or by bolts, screws and clips.

[0067] In order to facilitate the rotation of the spray head 32 relative to the long barrel 31, the spray head 32 and the long barrel 31 are usually connected by a trapezoidal thread, which will cause a gap between the spray head 32 and the long barrel 31. Therefore, as shown in Figure 4 and Figure 6 , in one embodiment, the liquid inlet end of the spray head 32 is threadedly connected to the outer wall of the other end of the long barrel 31; the spray head assembly 3 further comprises two second sealing rings 35, which are arranged between the long barrel 31 and the spray head 32 and are spaced apart.

[0068] In this embodiment, by arranging two second sealing rings 35, the two second sealing rings 35 can perform double-layer sealing between the long barrel 31 and the spray head 32, thereby preventing water from flowing outwards from the gap between the spray head 32 and the long barrel 31.

[0069] It should be understood that the spray piece 33 can be cylindrical, conical, or frustoconical in structure. Specifically, as shown in Figure 4 and Figure 6 , in one embodiment, the spray piece 33 comprises a spray piece 331, a screw rod 332, and a connecting rod 333, the spray piece 331 is built into the spray head 32, the screw rod 332 is threadedly connected to the other end of the long barrel 31, one end of the connecting rod 333 is connected to the screw rod 332, the other end of the connecting rod 333 is connected to the spray piece 331, and the outer diameter of the connecting rod 333 is greater than the outer diameter of the screw rod 332.

[0070] The spray piece 331 is connected to the long barrel 31 through the connecting rod 333 and the screw rod 332. When connecting the spray piece 331 to the long barrel 31, the screw rod 332 is threadedly connected to the threaded hole of the long barrel 31. Since the outer diameter of the connecting rod 333 is greater than the outer diameter of the screw rod 332, when the connecting rod 333 abuts against the long barrel 31, the connecting rod 333 can restrict the screw rod 332 from further rotating. At the same time, the connecting rod 333 abuts against the long barrel 31, and a pre-tightening force can be formed between them, which can restrict the screw rod 332 from loosening relative to the long barrel 31. In addition, the connecting rod 333 can also limit the positions of the screw rod 332 and the spray piece 331.

[0071] It should be understood that the spray piece 331 can be frustoconical, conical, or cylindrical, etc. Specifically, as shown in Figure 4 and Figure 6 , in one embodiment, the spray piece 331 is frustoconical, and the end with a smaller diameter of the spray piece 331 is connected to the connecting rod 333. The outer diameter of the spray piece 331 gradually increases in the direction away from the connecting rod 333. The spray head 32 is hollow and has openings at both ends. The inner wall of the spray head 32 forms an annular protrusion 34 relative to the spray piece 331. The inner diameter of the annular protrusion 34 gradually decreases in the direction close to the middle. The minimum inner diameter of the annular protrusion 34 is smaller than the outer diameter of the spray piece 331. The annular protrusion 34 is arranged between the long barrel 31 and the spray piece 331.

[0072] When the water spraying shape of the spray head 32 needs to be adjusted, the spray head 32 is rotated, and the annular protrusion 34 is moved by the spray head 32. When the spray piece 331 is close to the annular protrusion 34, the water sprayed by the spray head 32 gradually spreads out. When the spray piece 331 is away from the annular protrusion 34, the water sprayed by the spray head 32 gradually becomes columnar, and the range is increased.

[0073] The specific embodiments of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any various other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the utility model claims.

Claims

1. A water cannon, characterized in that The utility model provides a water cannon, which comprises: a fixed assembly formed with a liquid inlet channel; and a three-way assembly comprising a bearing, a three-way piece and a first sealing ring, the three-way piece having a first liquid inlet and two first liquid outlets connected to each other, the first liquid inlet being connected to the liquid inlet channel, the three-way piece being rotatably connected to the fixed assembly via the bearing, and the first sealing ring being arranged between the three-way piece and the fixed assembly and sealingly abutting the three-way piece and the fixed assembly.

2. The water cannon according to claim 1, wherein the liquid inlet end of the three-way piece is rotatably inserted into the liquid inlet channel; the bearing is sleeved on the liquid inlet end of the three-way piece, and the inner ring of the bearing is connected to the liquid inlet end of the three-way piece, and the outer ring of the bearing is connected to the fixed assembly.

3. The water cannon according to claim 2, wherein the inner ring of the first sealing ring abuts the outer wall of the three-way piece, and the outer ring of the first sealing ring abuts the inner wall of the liquid inlet channel.

4. The water cannon according to claim 2, wherein the outer wall of the three-way piece forms a limiting portion, and the limiting portion abuts the fixed assembly.

5. The water cannon according to claim 2, wherein the fixed assembly forms an abutting structure abutting one end of the bearing; the three-way assembly further comprises a limiting piece, the limiting piece abutting the other end of the bearing, and the limiting piece being detachably connected to the three-way piece.

6. The water cannon according to claim 2, wherein the three-way assembly further comprises a three-way elbow, the three-way elbow having two second liquid inlets and one second liquid outlet, and the two second liquid inlets of the three-way elbow being connected to the two first liquid outlets of the three-way piece, respectively.

7. The water cannon according to claim 6, wherein the three-way elbow is rotatably connected to the three-way piece, and the rotation axis of the three-way elbow is perpendicular to the rotation axis of the three-way piece.

8. The water cannon according to claim 6, wherein the water cannon further comprises a spray head assembly, the spray head assembly comprising: a long tube, one end of the long tube being connected to the second liquid outlet of the three-way elbow; a spray head, the spray head being threadedly connected to the other end of the long tube; and a spray piece, the spray piece being arranged in the spray head and connected to the other end of the long tube, and a liquid spraying gap being formed between the spray piece and the inner wall of the spray head.

9. The water cannon according to claim 8, wherein the liquid inlet end of the spray head is threadedly connected to the outer wall of the other end of the long tube; the spray head assembly further comprises two second sealing rings, the two second sealing rings being arranged between the long tube and the spray head, and the two second sealing rings being arranged in a spaced manner.

10. The water cannon according to claim 8, wherein the spray piece comprises a spray sheet, a screw rod and a connecting rod, the spray sheet being arranged in the spray head, the screw rod being threadedly connected to the other end of the long tube, one end of the connecting rod being connected to the screw rod, the other end of the connecting rod being connected to the spray sheet, and the outer diameter of the connecting rod being larger than the outer diameter of the screw rod.

Images