Garden green plant system of park under viaduct and arrangement method thereof

Abstract

The invention relates to a garden green plant system of a park under a viaduct and an arrangement method thereof, and belongs to the technical field of garden irrigation, the garden green plant system comprises a vegetation layer, a water inlet pipeline is laid on the vegetation layer, and the water inlet pipeline is provided with a pressure assembly and a nozzle; the pressure assembly comprises a pressure cylinder, a sealing plug, an elastic part and a partition plate, the open end of the pressure cylinder communicates with the interior of the water inlet pipeline, the partition plate is fixed into the pressure cylinder and divides the interior of the pressure cylinder into a sealing cavity and a communicating cavity, and the communicating position of the pressure cylinder and the water inlet pipeline is located at the communicating cavity; the circumferential side wall of the sealing plug slidably abuts against the inner wall of the communication cavity, the elastic piece is located on the side, away from the water inlet pipeline, of the sealing plug and pushes the sealing plug to move close to the water inlet pipeline, a through hole is formed in the partition plate, and the spray head communicates with the interior of the sealing cavity. The pressure cylinder is provided with a pressure adjusting assembly used for adjusting the posture of the elastic piece. The device has the effect of irrigating different types of vegetation with different water amounts.

Description

Technical Field

[0001] The present application relates to the technical field of garden irrigation, and in particular to a garden greening system and an arrangement method thereof for a park under an elevated bridge. Background Art

[0002] With the acceleration of urbanization, urban viaducts have been widely used as important facilities to relieve traffic pressure. However, the space under the viaducts often becomes a neglected corner of the city, and its greening and beautification work faces many challenges.

[0003] Due to limited lighting conditions under the viaduct, shade-loving vegetation will be selected during the process of greening vegetation coverage. The vegetation will be irrigated regularly. Sanitation workers will irrigate the vegetation through sprinkler trucks, or use water from the municipal pipeline network for irrigation. They will open the nearby municipal manhole covers, connect them through water pipes, and then use water from the municipal pipelines for irrigation.

[0004] As the level of urban greening increases, the level of urban beautification is also improving. The green vegetation under the viaduct is not limited to a single type of vegetation. It will be covered with a variety of vegetation to achieve the effect of improving the level of beautification. However, different types of vegetation have different degrees of water preference and water aversion, and there is a defect that it is impossible to distinguish between them during irrigation. Summary of the invention

[0005] In order to irrigate different types of vegetation with different amounts of water, the present application provides a garden greening system for a park under an elevated bridge and a method for arranging the same.

[0006] In the first aspect, the present application provides a garden greening system and a method for arranging the system in a park under an elevated bridge, using the following technical solutions: A garden greening system for a park under an elevated bridge comprises a vegetation layer, on which a water inlet pipe is laid, one end of which is used to communicate with a municipal pipe, and on which a pressure assembly and a nozzle are arranged, wherein the number of pressure assemblies and nozzles arranged corresponds to the number of types of green plants in the vegetation layer; the pressure assembly comprises a pressure cylinder, a sealing plug, an elastic member and a partition, wherein an opening end of the pressure cylinder is communicated with the interior of the water inlet pipe, the partition is fixed to the interior of the pressure cylinder to separate the interior of the pressure cylinder into a sealing chamber and a connecting chamber, the connection point between the pressure cylinder and the water inlet pipe is located at the connecting chamber, the sealing plug is slidably arranged in the connecting chamber, the circumferential side wall of the sealing plug is in sliding contact with the inner wall of the connecting chamber, the elastic member is located on the side of the sealing plug away from the water inlet pipe, the elastic member pushes the sealing plug to move closer to the water inlet pipe, a through hole is provided on the partition, and the nozzle is communicated with the interior of the sealing chamber; the pressure cylinder is provided with a pressure regulating assembly for adjusting the posture of the elastic member.

[0007] By adopting the above technical scheme, the initial pressure resistance of the pressure component is adjusted by the pressure regulating component, the posture of the elastic piece is adjusted by the pressure regulating component, the municipal pipeline delivers water to the water inlet pipeline, the water pressure in the municipal pipeline is constant, the elastic pieces in the pressure components at different positions have different initial states, the irrigation water enters the connecting cavity to squeeze and push the sealing plug to move, the sealing plug squeezes the elastic piece, the sealing plug keeps moving until it leaks out of the through hole, the irrigation water enters the sealing cavity through the through hole and is finally sprayed out through the nozzle, due to the different initial positions and postures of the elastic pieces, the irrigation water with a certain water pressure pushes the sealing plugs at different positions to move, and the through hole areas leaking out are different, resulting in different water flows that can pass through the through hole, and finally achieving the effect of irrigating vegetation in different areas with different amounts of water.

[0008] Optionally, the pressure regulating assembly includes a pressure regulating bolt and a gasket, the gasket is located in the connecting cavity, the pressure regulating bolt passes through the pressure cylinder into the connecting cavity and is rotatably connected to the gasket, the pressure regulating bolt is threadedly connected to the pressure cylinder, the gasket rotates relative to the pressure regulating bolt, and the gasket abuts against the elastic member on the side away from the pressure regulating bolt.

[0009] By adopting the above technical solution, the pressure regulating bolt is rotated, and the position of the gasket changes accordingly. The gasket pushes the elastic member to change its position relative to the pressure cylinder, that is, the initial position of the elastic member relative to the through hole changes, so that the sealing plug moves different distances to expose the through hole.

[0010] Optionally, the thickness of the sealing plug is greater than the diameter of the through hole.

[0011] By adopting the above technical solution, irrigation water cannot bypass the sealing plug and enter the space where the elastic member is located, thereby ensuring a stable use environment for the elastic member.

[0012] Optionally, a cross-path and curbstones are paved on the vegetation layer. The curbstones are laid along the edges of the cross-paths. The curbstones are hollow inside. The water inlet pipe is placed in the space formed by the curbstones, and the pressure cylinder passes through the curbstones.

[0013] By adopting the above technical solution, the cross-path is convenient for pedestrians to pass through the vegetation layer, and the setting of the curbstone prevents the irrigation water from flowing onto the cross-path. At the same time, the curbstone also provides a placement space for the water inlet pipe.

[0014] Optionally, a protective cover is provided on the curbstone, and the pressure cylinder is located inside the protective cover.

[0015] By adopting the above technical solution, the protective cover protects the pressure component and is responsible for bearing the external impact.

[0016] Optionally, the protective cover includes a fixed flap and an adjustable flap, each of which is provided with two fixed flaps and symmetrically distributed, the fixed flap is fixedly connected to the top of the curb stone, the adjustable flap is rotatably connected to the top of the curb stone and the rotation axis is horizontally arranged, and the side walls of adjacent adjustable flaps are magnetically adsorbed to each other; when the adjacent adjustable flaps are magnetically adsorbed to each other, the vertical cross-section of the protective cover is semicircular and closed, and after the adjacent adjustable flaps swing away from each other, the adjustable flaps are located outside the corresponding fixed flaps, and the protective cover is in an open state.

[0017] By adopting the above technical solution, the opening and closing of the protective cover is achieved by adjusting the position of the flap relative to the protective flap, and the overall operation is simple and convenient.

[0018] Optionally, a one-way rack is fixed to the outer wall of the fixed flap, and the length direction of the one-way rack is arranged along the swing direction of the adjusting flap. A limit pin is slidably arranged on the adjusting flap, and the limit pin penetrates the adjusting flap. The limit pin slides in the direction close to or away from the one-way rack. A spring is arranged on the adjusting flap for moving the limit pin close to the one-way rack, and the end of the limit pin abuts against the one-way rack to prevent the protective cover from opening.

[0019] By adopting the above technical solution, the abutment between the limit pin and the one-way rack can prevent the protective cover from automatically opening due to vibration or strong wind, so that the protective cover is in a stable closed state when it does not need to be opened.

[0020] Optionally, a groove is provided on the outer wall of the fixed flap, the groove is provided along the length direction of the one-way rack, and the one-way rack is located in the groove.

[0021] By adopting the above technical solution, since the protective cover is in a hemispherical state when closed, the one-way rack is exposed on the outer wall of the fixed flap, and the one-way rack is concealed in the groove, which improves safety and prevents pedestrians from accidentally bumping into the one-way rack on the protective cover and causing scratches.

[0022] Optionally, an extension tube is housed in the curbstone, one end of the extension tube is used to communicate with the sealing cavity of the pressure cylinder, and the other end is connected to the nozzle.

[0023] By adopting the above technical solution, when the plants on the vegetation layer grow taller, the vertical height of the sprinkler head can be increased by extending the tube, so that the vegetation layer can be sprayed and irrigated.

[0024] In the second aspect, the present application provides a garden greening system and a method for arranging the system in a park under an elevated bridge, using the following technical solutions: A garden greening system and a method for arranging the system in a park under an elevated bridge, comprising the following steps: S1. Lay the vegetation layer, starting from the direction away from the piers of the viaduct, and lay the vegetation in the order of high to low water preference; S2. Pave the cross-path and curbstones to connect the left and right sides of the space under the viaduct; S3. Lay the water inlet pipe inside the curbstone and install the pressure assembly and nozzle. The pressure assembly and nozzle are arranged beside different vegetation areas. S4. According to the water preference of different vegetation, the pressure resistance of the pressure component is set so that when the municipal pipeline delivers water to the water inlet pipeline, the water output of the nozzles at different positions of the pressure components is different.

[0025] By adopting the above technical solution, since it is shaded and humid under the viaduct, the plants under the bridge are shade-loving plants. Since the bridge piers are the most humid, the vegetation laid at the bridge piers is the most water-loving. By adjusting the pressure component, the water output of the sprinklers at different positions can be different, and the water output of vegetation with different water-loving degrees in different areas can be different.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. Turn the pressure-adjusting bolt to adjust the initial posture and position of the elastic member, thereby adjusting the initial pressure resistance of the pressure assembly. The initial position and posture of the elastic member are different. The irrigation water with a certain water pressure pushes the sealing plugs at different positions to move, and the leakage through the through-hole areas is different, resulting in different water flows that can pass through the through-holes, and finally achieving the effect of irrigating vegetation in different areas with different amounts of water; 2. The setting of the protective cover protects the pressure cylinder. The setting of the one-way rack and the limit pin makes the protective cover more stable when it is closed and will not open automatically due to vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application; Figure 2 It is a partial structural cross-sectional view of the pressure component; Figure 3 yes Figure 2 A partial enlarged schematic diagram of part A; Figure 4 It is a partial structural cross-sectional view of the protective cover; Figure 5 It is a schematic diagram of the structure of the extension pipe.

[0028] Explanation of the accompanying drawings: 1. Vegetation layer; 11. Cross-cutting path; 12. Curbstone; 2. Water inlet pipe; 3. Pressure assembly; 31. Pressure cylinder; 32. Sealing plug; 33. Elastic member; 34. Partition; 341. Sealing chamber; 342. Connecting chamber; 4. Through hole; 5. Nozzle; 6. Pressure regulating assembly; 61. Pressure regulating bolt; 62. Pad; 7. Protective cover; 71. Fixed flap; 711. One-way rack; 712. Groove; 72. Adjusting flap; 721. Limit pin; 722. Spring; 8. Extension tube. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-Figure 5 This application is described in further detail.

[0030] The embodiment of the present application discloses a landscaping system for a park under an elevated bridge.

[0031] refer to Figure 1 A garden greening system for a park under an elevated bridge includes a vegetation layer 1, a water inlet pipe 2 and a pressure component 3. The vegetation layer 1 uses shade-loving plants. The vegetation layer 1 is composed of a variety of plants. The plants are laid in the order of decreasing water preference in the direction away from the piers of the elevated bridge, that is, the vegetation laid close to the piers is the most water-loving plant. For example, the vegetation is divided into four types, which are Aglaonema, Hosta, Ophiopogon japonicus and Boxwood in order of water preference, among which Aglaonema is laid close to the piers.

[0032] refer to Figure 1 A through path 11 is also laid on the vegetation layer 1, and the through path 11 connects the left and right spaces under the viaduct, so that pedestrians can cross the vegetation layer 1. Curbstones 12 are laid on both sides of the through path 11 along the length direction of the through path 11. The interior of a single curbstone 12 is hollow, and the water inlet pipe 2 is laid in the space formed by all the curbstones 12 on one side of the through path 11.

[0033] refer to Figure 2 and Figure 3 , multiple pressure assemblies 3 are provided on each water inlet pipe 2, and the number of pressure assemblies 3 provided corresponds to the number of vegetation types contained in the vegetation layer 1. The pressure assembly 3 includes a pressure cylinder 31, a sealing plug 32, an elastic member 33 and a partition 34. The pressure cylinder 31 is vertical, and the bottom open end of the pressure cylinder 31 is connected to the water inlet pipe 2, and the top of the pressure cylinder 31 penetrates the top of the curb 12. The partition 34 is fixed inside the pressure cylinder 31, dividing the internal space of the pressure cylinder 31 into two parts, namely a sealing chamber 341 and a connecting chamber 342. The bottom of the pressure cylinder 31 is connected to the water inlet pipe 2 at the connecting chamber 342, and the sealing chamber 341 is in a sealed state as a whole. A through hole 4 is opened on the partition 34, and the through hole 4 connects the sealing chamber 341 and the connecting chamber 342. The water inlet pipe 2 is provided with a nozzle 5, the number of which is the same as that of the pressure assembly 3, the nozzle 5 is threadedly connected to the top of the pressure cylinder 31 and the connection is located at the top of the sealing cavity 341, and the nozzle 5 is connected to the inside of the sealing cavity 341. The elastic member 33 and the sealing plug 32 are both located inside the communication cavity 342, the elastic member 33 is located on the side of the sealing plug 32 away from the water inlet pipe 2, the circumferential side wall of the sealing plug 32 is tightly abutted against the inner wall of the sealing cavity 341, the thickness of the sealing plug 32 is greater than the diameter of the through hole 4, and the elastic member 33 can be a common spring.

[0034] refer to Figure 3A pressure regulating assembly 6 is provided on the pressure cylinder 31, and the pressure regulating assembly 6 includes a pressure regulating bolt 61 and a gasket 62. The gasket 62 is located in the connecting cavity 342. The pressure regulating bolt 61 passes through the pressure cylinder 31 to the connecting cavity 342 and is rotatably connected to the gasket 62. The pressure regulating bolt 61 is threadedly connected to the pressure cylinder 31, and the gasket 62 rotates relative to the pressure regulating bolt 61. The side of the gasket 62 facing away from the pressure regulating bolt 61 abuts against the top of the elastic member 33, and the bottom of the elastic member 33 is fixedly connected to the sealing plug 32.

[0035] refer to Figure 3 and Figure 4 , a protective cover 7 is provided on the curbstone 12, and the number of protective covers 7 provided corresponds to the number of pressure cylinders 31. The protective cover 7 includes a fixed flap 71 and an adjustable flap 72, and two fixed flaps 71 and an adjustable flap 72 are provided and are symmetrically distributed. The cross section of the protective cover 7 composed of the fixed flap 71 and the adjustable flap 72 is semicircular and buckled on the top of the curbstone 12 and covers the pressure cylinder 31. The fixed flap 71 is fixedly connected to the top of the curbstone 12, and the adjustable flap 72 is rotatably connected to the top of the curbstone 12 and the rotation axis is horizontally arranged. The magnetic adsorption of the side walls of adjacent adjustable flaps 72 that are close to each other can be achieved by installing magnets that can attract each other on the adjustable flaps 72, and the magnets are not shown in the figure.

[0036] refer to Figure 3 and Figure 4 A groove 712 is provided on the outer wall of the fixed flap 71, a one-way rack 711 is fixed on the outer wall of the fixed flap 71, the length direction of the one-way rack 711 is arranged along the swing direction of the adjusting flap 72, the groove 712 is provided along the length direction of the one-way rack 711, the one-way rack 711 is located in the groove 712, a limit pin 721 is slidably provided on the adjusting flap 72, the limit pin 721 penetrates the adjusting flap 72, the limit pin 721 slides in the direction close to or away from the one-way rack 711, and a spring 722 is provided on the adjusting flap 72. The spring 722 is located between the outer wall of the fixed flap 71 and the inner wall of the regulating flap 72. The spring 722 is replaced on the limit pin 721. One end of the spring 722 is fixedly connected to the limit pin 721, and the other end is fixedly connected to the inner wall of the regulating flap 72. The resilience of the spring 722 pushes the limit pin 721 to move in the direction close to the one-way rack 711. The end of the limit pin 721 abuts against the one-way rack 711. The teeth of the one-way rack 711 are inclined. After the end of the limit pin 721 abuts against the one-way rack 711, the protective cover 7 is prevented from opening. When adjacent regulating flaps 72 are magnetically attracted to each other, the protective cover 7 is closed. After the adjacent regulating flaps 72 swing away from each other, the regulating flap 72 is located outside the corresponding fixed flap 71, and the protective cover 7 is open.

[0037] refer to Figure 3 and Figure 5An extension tube 8 is housed in the curbstone 12, one end of the extension tube 8 is used to communicate with the sealing chamber 341 of the pressure cylinder 31, and the other end is connected to the nozzle 5. When the height of the nozzle 5 needs to be increased, the extension tube 8 can be installed between the nozzle 5 and the pressure cylinder 31.

[0038] The implementation principle of a garden greening system for a park under an elevated bridge in an embodiment of the present application is as follows: the pressure-adjusting bolt 61 is rotated to adjust the initial posture and position of the elastic member 33, thereby adjusting the initial pressure resistance of the pressure assembly 3. The municipal pipeline delivers water to the water inlet pipeline 2. The water pressure in the municipal pipeline is constant. The elastic members 33 in the pressure assembly 3 at different positions have different initial states. The irrigation water enters the connecting cavity 342 to squeeze and push the sealing plug 32 to move. The sealing plug 32 squeezes the elastic member 33. The sealing plug 32 keeps moving until it leaks out of the through hole 4. The irrigation water enters the sealing cavity 341 through the through hole 4 and is finally sprayed out through the nozzle 5. Due to the different initial positions and postures of the elastic member 33, the irrigation water with a certain water pressure pushes the sealing plugs 32 at different positions to move, and the areas of the through hole 4 that leak out are different, resulting in different water flows that can pass through the through hole 4, and finally achieving the effect of watering vegetation in different areas with different amounts of water.

[0039] The embodiment of the present application also discloses a method for arranging a garden greening system in a park under an elevated bridge.

[0040] The following steps are involved: S1, laying vegetation layer 1, laying vegetation in the order of high to low water preference from the direction away from the pier of the viaduct; S2, laying the cross-path 11 and the curb 12, so that the left and right sides of the space under the viaduct are connected; S3, laying the water inlet pipe 2 in the curb 12, and installing the pressure assembly 3 and the nozzle 5, and arranging the pressure assembly 3 and the nozzle 5 beside different vegetation areas; S4. According to the water preference of different vegetation, the pressure resistance of the pressure assembly 3 is set so that when the municipal pipeline delivers water to the water inlet pipeline 2, the water output of the nozzles 5 at different positions of the pressure assembly 3 is different.

[0041] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A garden greening system for a park under an elevated bridge, comprising a vegetation layer (1), characterized in that: A water inlet pipe (2) is laid on the vegetation layer (1), one end of the water inlet pipe (2) is used to communicate with a municipal pipe, and a pressure assembly (3) and a nozzle (5) are arranged on the water inlet pipe (2), and the number of pressure assemblies (3) and nozzles (5) arranged corresponds to the number of types of green plants in the vegetation layer (1); the pressure assembly (3) comprises a pressure cylinder (31), a sealing plug (32), an elastic member (33) and a partition (34), the opening end of the pressure cylinder (31) is communicated with the inside of the water inlet pipe (2), and the partition (34) is fixed inside the pressure cylinder (31) to divide the inside of the pressure cylinder (31) into a sealed chamber (341) and a communicating chamber (342). 342, the connection point between the pressure cylinder (31) and the water inlet pipe (2) is located in the connecting cavity (342), the sealing plug (32) is slidably arranged in the connecting cavity (342), the circumferential side wall of the sealing plug (32) is in sliding contact with the inner wall of the connecting cavity (342), the elastic member (33) is located on the side of the sealing plug (32) away from the water inlet pipe (2), the elastic member (33) pushes the sealing plug (32) to move closer to the water inlet pipe (2), the partition plate (34) is provided with a through hole (4), and the nozzle (5) is connected to the inside of the sealing cavity (341); the pressure cylinder (31) is provided with a pressure regulating assembly (6) for adjusting the posture of the elastic member (33).

2. The garden greening system for a park under an elevated bridge according to claim 1, characterized in that: The pressure regulating assembly (6) comprises a pressure regulating bolt (61) and a gasket (62). The gasket (62) is located in the connecting cavity (342). The pressure regulating bolt (61) passes through the pressure cylinder (31) and reaches the connecting cavity (342) to be rotatably connected to the gasket (62). The pressure regulating bolt (61) is threadedly connected to the pressure cylinder (31). The gasket (62) rotates relative to the pressure regulating bolt (61). The side of the gasket (62) facing away from the pressure regulating bolt (61) abuts against the elastic member (33).

3. The garden greening system for a park under an elevated bridge according to claim 1, characterized in that: The thickness of the sealing plug (32) is greater than the diameter of the through hole (4).

4. The garden greening system for a park under an elevated bridge according to claim 1, characterized in that: A through path (11) and a curbstone (12) are laid on the vegetation layer (1); the curbstone (12) is laid along the edge of the through path (11); the curbstone (12) is hollow inside; the water inlet pipe (2) is placed in the space formed by the curbstone (12); and the pressure cylinder (31) passes through the curbstone (12).

5. The garden greening system for a park under an elevated bridge according to claim 4 is characterized by: A protective cover (7) is provided on the curbstone (12), and the pressure cylinder (31) is located inside the protective cover (7).

6. The garden greening system for a park under an elevated bridge according to claim 5, characterized in that: The protective cover (7) comprises a fixed flap (71) and an adjustable flap (72), wherein two fixed flaps (71) and two adjustable flaps (72) are provided and are symmetrically distributed, wherein the fixed flap (71) is fixedly connected to the top of the curbstone (12), the adjustable flap (72) is rotatably connected to the top of the curbstone (12), and the rotation axis is arranged horizontally, and the side walls of adjacent adjustable flaps (72) are magnetically adsorbed to each other; when the adjacent adjustable flaps (72) are magnetically adsorbed to each other, the vertical cross-section of the protective cover (7) is in a semicircular closed shape, and when the adjacent adjustable flaps (72) swing in a direction away from each other, the adjustable flaps (72) are located outside the corresponding fixed flaps (71), and the protective cover (7) is in an open state.

7. The garden greening system for a park under an elevated bridge according to claim 6 is characterized by: A one-way rack (711) is fixed to the outer wall of the fixed flap (71), the length direction of the one-way rack (711) is arranged along the swinging direction of the regulating flap (72), a limit pin (721) is slidably arranged on the regulating flap (72), the limit pin (721) penetrates the regulating flap (72), the limit pin (721) slides in a direction approaching or moving away from the one-way rack (711), the regulating flap (72) is provided with a spring (722) for moving the limit pin (721) toward the one-way rack (711), and the end of the limit pin (721) abuts against the one-way rack (711) to prevent the protective cover (7) from opening.

8. The garden greening system for a park under an elevated bridge according to claim 7, characterized in that: A groove (712) is provided on the outer wall of the fixed flap (71), the groove (712) is provided along the length direction of the one-way rack (711), and the one-way rack (711) is located in the groove (712).

9. The garden greening system for a park under an elevated bridge according to claim 4, characterized in that: An extension tube (8) is housed in the curbstone (12), one end of the extension tube (8) being connected to the sealed cavity (341) of the pressure cylinder (31), and the other end of the extension tube (8) being connected to the nozzle (5).

10. A method for arranging a garden greening system in a park under an elevated bridge, using the garden greening system in a park under an elevated bridge as claimed in claim 4, characterized in that: The following steps are involved: S1, laying a vegetation layer (1), laying the vegetation in the order of high to low water preference of the vegetation, starting from a direction away from the piers of the viaduct; S2, laying a cross-cutting path (11) and a curb (12) to connect the left and right sides of the space under the viaduct; S3, laying the water inlet pipe (2) in the curb (12), and installing the pressure assembly (3) and the nozzle (5), and arranging the pressure assembly (3) and the nozzle (5) beside different vegetation areas; S4. According to the water preference of different vegetation, the pressure resistance of the pressure assembly (3) is set so that when the municipal pipeline delivers water to the water inlet pipeline (2), the water output of the nozzles (5) at different positions of the pressure assembly (3) is different.

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