Fountain device

Abstract

The fountain device comprises a water pump, a water outlet barrel, a first water outlet mechanism, a second water outlet mechanism and a controller, and the water pump is provided with a water outlet end; the first water outlet mechanism comprises a first conveying pipe, a first spray head and a first electromagnetic valve, water ejected by the first spray head can be attached to the inner circumferential wall of the water outlet barrel to spirally rise, and the first electromagnetic valve is installed on the first conveying pipe and used for controlling on / off of the first conveying pipe and controlling water outlet of the first spray head; the first water outlet mechanism comprises a second conveying pipe, a second spray head and a second electromagnetic valve, the second spray head can spray water into the water outlet barrel in the height direction of the water outlet barrel, and the second electromagnetic valve is installed on the second conveying pipe and used for controlling connection / disconnection of the second conveying pipe and controlling water outlet of the second spray head; the controller is used for controlling opening / closing of the first electromagnetic valve and / or the second electromagnetic valve. The fountain device is high in ornamental value, good in mute effect and capable of being suitable for indoor public places.

Description

TECHNICAL FIELD

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

[0002] In architectural design and landscape design, water scene devices are often arranged to improve the artistic nature of the environment. At present, the existing vortex water scene is usually formed by digging a pool at a park or a landscape setting, installing a motor at the bottom of the pool, and driving the fan to rotate to stir the water in the pool, thereby forming a vortex water scene. However, although the motor drives the fan to rotate to stir the pool, it can form a vortex water scene, but it needs to be equipped with a corresponding pool site, and the construction steps are complicated and large. The pool liquid surface is always in a rotating state, which is easy to cause visual aesthetic fatigue. Therefore, it is necessary to propose a multi-change type water scene with high ornamental value and applicable to indoor public places. CONTENT OF THE UTILITY MODEL

[0003] Therefore, it is necessary to provide a fountain device that can solve the above technical problems.

[0004] To solve the above technical problems, the present application provides the following technical solutions:

[0005] A fountain device, the fountain device comprising:

[0006] a water pump having a water outlet end;

[0007] a water outlet cylinder;

[0008] a first water outlet mechanism comprising a first conveying pipe, a first nozzle and a first electromagnetic valve, the first nozzle being installed in the water outlet cylinder and being in communication with the first conveying pipe, the first conveying pipe also being in communication with the water outlet end, and the water jetted from the first nozzle being able to spiral upward along the inner circumferential wall of the water outlet cylinder, the first electromagnetic valve being installed on the first conveying pipe for controlling the opening / closing of the first conveying pipe and the water outlet of the first nozzle;

[0009] a second water outlet mechanism comprising a second conveying pipe, a second nozzle and a second electromagnetic valve, the second nozzle being in communication with the water outlet end through the second conveying pipe, the second nozzle being able to jet water into the water outlet cylinder in the height direction of the water outlet cylinder, the second electromagnetic valve being installed on the second conveying pipe for controlling the opening / closing of the second conveying pipe and the water outlet of the second nozzle;

[0010] a controller electrically connected with the first electromagnetic valve and the second electromagnetic valve respectively for controlling the opening / closing of the first electromagnetic valve and / or the second electromagnetic valve.

[0011] It can be understood that through the above structural arrangement, the fountain device can realize different water shapes of the water sprayed by the first spray head and the second spray head on the water outlet cylinder by switching on / off the first electromagnetic valve and the second electromagnetic valve and controlling the flow of the water pump, thereby improving the ornamental value of the fountain device, achieving better mute effect, and making the fountain device applicable to indoor public occasions and convenient to install.

[0012] In one of the embodiments, the number of the first spray heads is configured to be multiple, and the multiple first spray heads are symmetrically arranged relative to the center line of the water outlet cylinder.

[0013] The multiple first spray heads are connected to the first conveying pipe in parallel.

[0014] It can be understood that configuring the number of the first spray heads to be multiple can form multiple spiral water columns when the water sprayed by the multiple first spray heads spirally rises along the inner peripheral wall of the water outlet cylinder, thereby improving the visual effect of the fountain device during operation.

[0015] In one of the embodiments, the water outlet directions of the multiple first spray heads are arranged along the same circumferential direction of the water outlet cylinder.

[0016] It can be understood that through the above structural arrangement, the water sprayed by the multiple first spray heads can be combined into a spiral water column, thereby ensuring the landscape forming effect of the fountain device during operation.

[0017] In one of the embodiments, the fountain device further comprises a three-way joint, and the first conveying pipe and the second conveying pipe are connected to and communicated with the water outlet end through the three-way joint.

[0018] In one of the embodiments, the fountain device further comprises a water tank, and the water pump is installed in the water tank to supply water to the first conveying pipe and / or the second conveying pipe.

[0019] The water outlet cylinder is arranged in the area where the water tank is located, and the overflow water of the water outlet cylinder can flow back to the water tank.

[0020] It can be understood that through the above structural arrangement, the overflow water of the water outlet cylinder can flow back to the water tank, and the water pump can be used to convey the water flowing back to the water tank to the first conveying pipe and / or the second conveying pipe, so that the water can be recycled, thereby saving water.

[0021] In one of the embodiments, the fountain device further comprises a bearing plate fixedly installed on the water tank to bear the water outlet cylinder.

[0022] The bearing plate is provided with a backflow hole, and the water overflowed from the water outlet cylinder can flow back to the water tank through the backflow hole.

[0023] It can be understood that the bearing plate bears the water outlet cylinder, and the backflow hole provided on the bearing plate is used to flow back the water overflowed from the water outlet cylinder, so that the structure of the fountain device is simplified.

[0024] In one of the embodiments, the fountain device further comprises a mounting plate fixedly installed in the water tank and connected with the water pump, used to bear the water pump.

[0025] The mounting plate is further used to bear the first conveying pipe and the second conveying pipe.

[0026] In one of the embodiments, a handle is installed on the water tank, which can be gripped by a hand.

[0027] It can be understood that the above structure can facilitate the manual carrying of the fountain device.

[0028] In one of the embodiments, the fountain device further comprises an irradiation lamp, which can emit light towards the water outlet cylinder.

[0029] It can be understood that the above structure can make the fountain device spray water and form a landscape at the same time, and the irradiation lamp can also emit light, so that the effect of landscape formation during the operation of the fountain device is improved.

[0030] In one of the embodiments, the fountain device further comprises a middle hole plate, and the water outlet cylinder is fixedly installed on the middle hole plate, used to bear the first nozzle and the second nozzle.

[0031] The middle hole plate is provided with a through hole, and the second nozzle can spray water into the water outlet cylinder through the through hole.

[0032] Due to the application of the above scheme, the present application has the following advantages compared with the prior art:

[0033] The fountain device claimed in the present application can realize different water shapes of the water sprayed by the first nozzle and the second nozzle on the water outlet cylinder by switching the opening / closure of the first electromagnetic valve and the second electromagnetic valve and controlling the flow of the water pump, so that the ornamental property of the fountain device is improved, the mute effect is better, and the fountain device can be applied to indoor public occasions and is convenient to install and set. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the accompanying drawings in the following description only only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor.

[0035] Figure 1 The structural schematic diagram of the fountain device provided by an embodiment of the present application is shown in the figure.

[0036] Figure 2 The structural schematic diagram of the fountain device provided by an embodiment of the present application is shown in the figure.

[0037] Figure 3 The structural schematic diagram of the fountain device provided by an embodiment of the present application is shown in the figure.

[0038] Figure 4 The structural schematic diagram of the fountain device provided by an embodiment of the present application is shown in the figure.

[0039] Figure 5 The structural schematic diagram of the fountain device provided by an embodiment of the present application is shown in the figure. Figure 4 The enlarged view of the P part in the figure.

[0040] Figure 6 The structural schematic diagram of the fountain device provided by an embodiment of the present application is shown in the figure.

[0041] Figure 7 The top view of the bearing plate and the middle hole plate provided by an embodiment of the present application is shown in the figure.

[0042] The accompanying drawings are as follows: 100, fountain device; 10, water pump; 11, water outlet end; 20, water outlet cylinder; 201, opening; 21, inner peripheral wall; 31, first conveying pipe; 311, connecting joint; 32, first spray head; 33, first electromagnetic valve; 34, connecting pipe; 41, second conveying pipe; 42, second spray head; 43, second electromagnetic valve; 50, middle hole plate; 501, through hole; 60, sealing gasket; 70, three-way joint; 80, water tank; 81, handle; 82, waterproof joint; 90, bearing plate; 901, backflow hole; 110, mounting plate; 120, irradiation lamp; 130, mounting bracket; 140, water guide plate. DETAILED DESCRIPTION

[0043] To make the above objectives, features and advantages of the present application more clear, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. Numerous specific details will be set forth in the following description in order to provide a thorough understanding of the present application. However, it will be appreciated by those skilled in the art that the present application can be practiced in a variety of ways beyond the specific details set forth in the description below. Therefore, the present application should not be limited to the specific embodiments described below, but should be understood to include all modifications, equivalents, and alternatives falling within the scope of the present application.

[0044] It is to be noted that when an element or layer is referred to as being "on" or "connected to" another element or layer, it can be directly on or connected to the other element or layer, or intervening elements or layers can be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements or layers present. The use of the terms "on" and "connected to" in the present description are to be construed in the broadest sense to include direct and indirect connections and "on" and "connected to" can be understood as including a combination of direct and indirect connections.

[0045] In addition, the terms "first", "second", etc. are used herein only to describe various elements, but do not imply or suggest relative importance or a number of the elements indicated. Thus, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0046] In the present application, unless otherwise explicitly specified and limited, the "on", "under", "above" and "over" of the first feature to the second feature can be that the first feature is directly in contact with the second feature, or the first feature is indirectly in contact with the second feature through an intermediate medium. Moreover, the "on", "above" and "over" of the first feature to the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is horizontally higher than the second feature. The "under", "below" and "under" of the first feature to the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is horizontally lower than the second feature.

[0047] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more of the associated listed items.

[0048] As Figures 1 to 7As shown, the fountain device 100 provided by an embodiment of the present application comprises a water pump 10, a water outlet cylinder 20, a first water outlet mechanism, a second water outlet mechanism and a controller (not shown in the figure), the water pump 10 has a water outlet end 11; the first water outlet mechanism comprises a first conveying pipe 31, a first spray head 32 and a first electromagnetic valve 33, the first spray head 32 is installed in the water outlet cylinder 20 and communicates with the first conveying pipe 31, the first conveying pipe 31 also communicates with the water outlet end 11, and the water sprayed by the first spray head 32 can spiral upward along the inner circumferential wall 21 of the water outlet cylinder 20, the first electromagnetic valve 33 is installed on the first conveying pipe 31 and is used for controlling the on / off of the first conveying pipe 31 and the water outlet of the first spray head 32; the second water outlet mechanism comprises a second conveying pipe 41, a second spray head 42 and a second electromagnetic valve 43, the second spray head 42 communicates with the water outlet end 11 through the second conveying pipe 41, the second spray head 42 can spray water into the water outlet cylinder 20 in the height direction of the water outlet cylinder 20, the second electromagnetic valve 43 is installed on the second conveying pipe 41 and is used for controlling the on / off of the second conveying pipe 41 and the water outlet of the second spray head 42; the controller is electrically connected with the first electromagnetic valve 33 and the second electromagnetic valve 43 respectively and is used for controlling the on / off of the first electromagnetic valve 33 and / or the second electromagnetic valve 43. Here, the water outlet cylinder 20 is configured as a PMMA pipe.

[0049] It can be understood that the fountain device 100 can realize different water shapes of the water sprayed by the first spray head 32 and the second spray head 42 on the water outlet cylinder 20 by switching the on / off of the first electromagnetic valve 33 and / or the second electromagnetic valve 43 and controlling the flow of the water pump 10, thereby improving the ornamental property of the fountain device 100, achieving better mute effect, and making the fountain device 100 applicable to indoor public occasions and convenient to install and set.

[0050] It should be noted that the structure and working principle of the water pump 10 can adopt the existing conventional mode, which will not be described here.

[0051] As shown in Figure 2 , Figure 3 In an embodiment, the number of the first spray heads 32 is configured as multiple, and the multiple first spray heads 32 are symmetrically arranged relative to the center line of the water outlet cylinder 20; wherein the multiple first spray heads 32 are connected to the first conveying pipe 31 in parallel. That is, the number of the first spray heads 32 is configured as multiple, so that multiple spiral water columns can be formed when the water sprayed by the multiple first spray heads 32 spiral upward along the inner circumferential wall 21 of the water outlet cylinder 20, thereby improving the visual effect of the fountain device 100 during operation. Here, the number of the first spray heads 32 is two. It can be understood that in other embodiments, the number of the first spray heads 32 can also be four or even more.

[0052] As shown in Figure 6As shown in the drawings, in an embodiment, a plurality of connecting joints 311 are formed on the first conveying pipe 31, and the plurality of connecting joints 311 are arranged one-to-one with the plurality of first nozzles 32. The first nozzles 32 can be connected with the corresponding connecting joints 311 through the connecting pipes 34 to realize the communication between the first nozzles 32 and the corresponding first conveying pipes 31. Here, the connecting pipes 34 can be configured as air pipes.

[0053] As shown in the drawings, in an embodiment, the water outlet directions of the plurality of first nozzles 32 are arranged along the same circumferential direction of the water outlet cylinder. In this way, the water sprayed by the plurality of first nozzles 32 can converge into a spiral water column, ensuring the landscape forming effect when the fountain device 100 is working. Figure 2 As shown in the drawings, in an embodiment, the fountain device further comprises a middle hole plate 50, and the water outlet cylinder 20 is fixedly installed on the middle hole plate 50 for bearing the first nozzles 32 and the second nozzles 42. Here, the middle hole plate 50 is provided with a through hole 501, and the second nozzles 42 can spray water into the water outlet cylinder 20 through the through hole 501.

[0054] Figures 2 to 5 As shown in the drawings, in an embodiment, the fountain device further comprises a sealing gasket 60, which is arranged between the water outlet cylinder 20 and the middle hole plate 50 for assembling and sealing the middle hole plate 50 and the water outlet cylinder 20. In this way, the sealing property of the assembly between the water outlet cylinder 20 and the middle hole plate 50 is ensured, avoiding leakage.

[0055] As shown in the drawings, in an embodiment, the fountain device 100 further comprises a three-way joint 70, and the first conveying pipe 31 and the second conveying pipe 41 are connected and communicated with the water outlet end 11 through the three-way joint 70. Figure 5 As shown in the drawings, in an embodiment, the fountain device 100 further comprises a water tank 80, and the water pump 10 is installed in the water tank 80 for supplying water to the first conveying pipe 31 and / or the second conveying pipe 41. Here, the water outlet cylinder 20 is arranged in the area where the water tank 80 is located, and the overflow water of the water outlet cylinder 20 can flow back to the water tank 80. In this way, the overflow water of the water outlet cylinder 20 can flow back to the water tank 80, and the water pump 10 can be used to convey the water flowing back to the water tank 80 to the first conveying pipe 31 and / or the second conveying pipe 41, so that the water can be recycled, having the effect of saving water.

[0056] Figure 3 As shown in the drawings, in an embodiment, a handle 81 is installed on the water tank 80, which can be gripped by a hand. In this way, the manual carrying of the fountain device 100 can be facilitated.

[0057] As shown in the drawings, in an embodiment, a handle 81 is installed on the water tank 80, which can be gripped by a hand. In this way, the manual carrying of the fountain device 100 can be facilitated. Figure 2 Figure 3 As shown in the drawings, in an embodiment, a handle 81 is installed on the water tank 80, which can be gripped by a hand. In this way, the manual carrying of the fountain device 100 can be facilitated.

[0058] As shown in the drawings, in an embodiment, a handle 81 is installed on the water tank 80, which can be gripped by a hand. In this way, the manual carrying of the fountain device 100 can be facilitated. Figure 1 As shown in the drawings, in an embodiment, a handle 81 is installed on the water tank 80, which can be gripped by a hand. In this way, the manual carrying of the fountain device 100 can be facilitated.​​​

[0059] As shown in Figure 3 In an embodiment, a plurality of waterproof connectors 82 are arranged on the water tank 80, so that the wire harness electrically connected to the first electromagnetic valve 33, the second electromagnetic valve 43 and the water pump 10 can be led out through the corresponding waterproof connectors 82. In this way, the sealing of the entire fountain device 100 is ensured, and leakage is avoided.

[0060] As shown in Figure 3 , Figure 7 In an embodiment, the fountain device 100 further comprises a bearing plate 90 fixedly installed on the water tank 80 and used for bearing the water outlet cylinder 20; wherein the bearing plate 90 is provided with a backflow hole 901, and the water overflowing from the water outlet cylinder 20 can flow back to the water tank 80 through the backflow hole 901. In this way, the water overflowing from the water outlet cylinder 20 is backflowed through the backflow hole 901 provided on the bearing plate 90 while the bearing plate 90 is used to bear the water outlet cylinder 20, so as to simplify the structure of the fountain device 100. Here, the bearing plate 90 can be fixed to the water tank 80 by bolts (not shown in the figure).

[0061] As shown in Figure 1 In an embodiment, the fountain device 100 further comprises a water guide plate 140 fixedly installed on the water tank 80 and used for guiding the water overflowing from the water outlet cylinder 20 to the water tank 80.

[0062] As shown in Figure 2 In an embodiment, the fountain device 100 further comprises a mounting plate 110 fixedly installed in the water tank 80 and connected and fixed with the water pump 10, and used for bearing the water pump 10; wherein the mounting plate 110 is also used for bearing the first conveying pipe 31 and the second conveying pipe 41. Here, the mounting plate 110 can be fixed to the water tank 80 by bolts (not shown in the figure).

[0063] As shown in Figure 6 In an embodiment, the fountain device 100 further comprises an irradiation lamp 120 capable of emitting light rays towards the water outlet cylinder 20. In this way, the fountain device 100 can perform light irradiation by the irradiation lamp while forming water spray, so as to improve the effect of landscape formation when the fountain device 100 is working. Here, the second nozzle 42 passes through the irradiation lamp 120 and sprays water into the water outlet cylinder 20 through the through hole 501.

[0064] As shown in Figure 3 , Figure 4 In an embodiment, the fountain device 100 further comprises a mounting bracket 130 fixedly installed in the water tank 80 and connected and fixed with the irradiation lamp 120, and used for bearing the irradiation lamp 120.

[0065] In summary, when the fountain device 100 of the present application is in operation, first, the controller is used to close the second electromagnetic valve 43, open the first electromagnetic valve 33, and control the flow of the water pump 10 in the water tank 80 by using a frequency converter (not shown in the figure), so as to control the water flow delivered by the first delivery pipe 31 to the first nozzle 32, so that the water ejected by the first nozzle 32 can spiral upward along the inner circumferential wall 21 of the water outlet cylinder 20, forming a spiral water column, the center of the spiral water column is discharged through the through hole 501 on the middle hole plate 50, forming a hollow spiral water column, so as to present a vortex fountain; as the water pump 10 continues to supply water, the spiral water column overflows from the opening 201 of the water outlet cylinder 20, presenting a vortex waterfall fountain; secondly, the controller is used to open the second electromagnetic valve 43, close the first electromagnetic valve 33, and control the flow of the water pump 10 in the water tank 80 by using a frequency converter (not shown in the figure), so as to control the water flow delivered by the second delivery pipe 41 to the second nozzle 42, the water in the second nozzle 42 is sprayed into the water outlet cylinder 20 through the through hole 501, at the same time, the second electromagnetic valve 43 is opened / closed at intervals, the water column in the water outlet cylinder 20 presents a jumping water column, so as to form a jumping fountain.

[0066] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not contradict, they should be considered within the scope of the present disclosure.

[0067] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be pointed out that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A fountain device, characterized in that: The fountain device (100) comprises: A water pump (10) having a water outlet (11); Water outlet cylinder (20); A first water outlet mechanism comprises a first delivery pipe (31), a first nozzle (32) and a first electromagnetic valve (33); the first nozzle (32) is installed in the water outlet cylinder (20) and communicates with the first delivery pipe (31); the first delivery pipe (31) is also communicated with the water outlet end (11); and the water ejected by the first nozzle (32) can adhere to the inner circumferential wall (21) of the water outlet cylinder (20) and spirally rise; the first electromagnetic valve (33) is installed on the first delivery pipe (31) and is used to control the on / off of the first delivery pipe (31) and control the water outlet of the first nozzle (32); A second water outlet mechanism comprises a second delivery pipe (41), a second nozzle (42) and a second electromagnetic valve (43); the second nozzle (42) is connected to the water outlet end (11) through the second delivery pipe (41); the second nozzle (42) can inject water into the water outlet cylinder (20) in the height direction of the water outlet cylinder (20); the second electromagnetic valve (43) is installed on the second delivery pipe (41) and is used to control the on / off of the second delivery pipe (41) and control the water outlet of the second nozzle (42); A controller is electrically connected to the first solenoid valve (33) and the second solenoid valve (43) respectively, and is used to control the opening / closing of the first solenoid valve (33) and / or the second solenoid valve (43).

2. The fountain device according to claim 1, characterized in that: The number of the first nozzles (32) is configured to be multiple, and the multiple first nozzles (32) are symmetrically arranged relative to the center line of the water outlet cylinder (20); Wherein, a plurality of the first nozzles (32) are connected to the first delivery pipe (31) in parallel.

3. The fountain device according to claim 1, characterized in that: The water outlet directions of the plurality of first nozzles (32) are arranged along the same circumferential direction of the water outlet cylinder (20).

4. The fountain device according to claim 1, characterized in that: The fountain device (100) further comprises a three-way joint (70), and the first delivery pipe (31) and the second delivery pipe (41) are connected and communicated with the water outlet (11) via the three-way joint (70).

5. The fountain device according to claim 1, characterized in that: The fountain device (100) further comprises a water tank (80), wherein the water pump (10) is installed in the water tank (80) and is used to supply water to the first delivery pipe (31) and / or the second delivery pipe (41); The water outlet cylinder (20) is arranged in the area where the water tank (80) is located, and water overflowing from the water outlet cylinder (20) can flow back into the water tank (80).

6. The fountain device according to claim 5, characterized in that: The fountain device (100) further comprises a bearing plate (90), wherein the bearing plate (90) is fixedly mounted on the water tank (80) and is used to bear the water outlet cylinder (20); The supporting plate (90) is provided with a reflux hole (901), and water overflowing from the water outlet cylinder (20) can flow back to the water tank (80) via the reflux hole (901).

7. The fountain device according to claim 5, characterized in that: The fountain device (100) further includes a mounting plate (110), wherein the mounting plate (110) is fixedly mounted in the water tank (80) and is connected and fixed to the water pump (10) for supporting the water pump (10); The mounting plate (110) is also used to support the first delivery pipe (31) and the second delivery pipe (41).

8. The fountain device according to claim 5, characterized in that: The water tank (80) is provided with a handle (81) for being grasped by a human hand.

9. The fountain device according to claim 1, characterized in that: The fountain device (100) further comprises an illumination lamp (120), and the illumination lamp (120) is capable of emitting light toward the water outlet cylinder (20).

10. The fountain device according to claim 1, characterized in that: The fountain device (100) further includes a central hole plate (50), and the water outlet cylinder (20) is fixedly mounted on the central hole plate (50) and is used to carry the first nozzle (32) and the second nozzle (42); The central hole plate (50) is provided with a through hole (501), and the second nozzle (42) can spray water into the water outlet cylinder (20) through the through hole (501).

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