Greening maintenance device for garden environment construction

Abstract

The invention relates to the technical field of irrigators, and discloses a greening maintenance device for garden environment construction. According to the greening maintenance device for garden environment construction, impact force of water flow is utilized, and firstly, the spraying function of an annular area is achieved; 2, a necessary spraying function is realized; thirdly, the range of the annular area is widened, the irrigation range is widened, the angle change of a rectangular spray head is slow through a pressure control mechanism, so that the irrigation of the same part has the characteristic of complete irrigation, the irrigation effect is improved, the necessary supporting function is achieved through a supporting rotating mechanism, meanwhile, rotation of a vertical rotating disc is not affected, and the irrigation efficiency is improved. By means of the springback mechanism, the auxiliary reset spiral spring can be compressed, the compressed auxiliary reset spiral spring can reduce the rotating speed of the vertical rotating disc, and therefore the irrigation range is enlarged, and meanwhile when the auxiliary reset spiral spring is reset, the linkage component can be driven to reset to the initial state.

Description

Technical Field

[0001] The present invention relates to the technical field of irrigation devices, and specifically to a greening maintenance device for garden environment construction. Background Art

[0002] At present, during the greening maintenance of gardens and landscapes, it is necessary to irrigate plants. Most irrigation devices use the intensity of water flow to spray outwards to irrigate the surrounding plants. In the prior art, the irrigation device with the largest irrigation range mainly uses the water flow intensity to drive the sprinkler head at the top to perform rotary spraying at a fixed angle. As a result, when the water flow is sprayed, it makes a circular motion and can irrigate the plants within the annular area, thus achieving a large-scale irrigation. However, since the angle between the sprinkler head and the rotating body is fixed, it is impossible to rotate within the rotating body, resulting in a relatively low width of the annular coverage range. Therefore, the irrigation range is still relatively narrow. Summary of the Invention

[0003] (I) Technical Problems to be Solved Aiming at the deficiencies of the prior art, the present invention provides a greening maintenance device for garden environment construction, which has the advantages of a wide annular irrigation range and solves the above technical problems.

[0004] (II) Technical Solutions To achieve the above object, the present invention provides the following technical solution: A greening maintenance device for garden environment construction, including a bottom cylindrical shell with a main mounting plate at the bottom and a top cylindrical shell with an upwardly concave sleeve cavity on the bottom surface. The inner center of the bottom cylindrical shell is provided with a liquid flow cavity communicating the lower space and the upper space. The top cylindrical shell is mechanically sleeved on the top of the outside of the bottom cylindrical shell through a bearing and a sealing ring at the bottom of the concave sleeve cavity, and the top cylindrical shell can rotate relative to the bottom cylindrical shell. A fixing rod with a spiral blade fixed on one side is installed at the center of the bottom of the top cylindrical shell, and the fixing rod and the spiral blade on its rod body extend into the interior of the liquid flow cavity. The interior of the top cylindrical shell is provided with two opposing first liquid flow holes communicating its upper and lower end faces. The interior of the top cylindrical shell is provided with a transverse component activity groove, one end of the transverse component activity groove communicates with the concave sleeve cavity through a second liquid flow hole, and the middle of the transverse component activity groove communicates with the upper space of the top cylindrical shell through a third liquid flow hole. A pressure control mechanism is installed on the side of the top cylindrical shell, which leads into the interior of the transverse component activity groove and controls the liquid flow rate inside it through gas speed limiting. At the top of the two first liquid flow holes on the upper end face of the top cylindrical shell, a support rotation mechanism for liquid flow guidance is respectively installed. A vertical rotating disk is installed between the opposing rotating bodies of the two support rotation mechanisms. The other rotating body ends of the two support rotation mechanisms are respectively connected to a rebound mechanism for controlling the rotation angle of the vertical rotating disk. A flat structure is provided on a part of the circumferential side of the vertical rotating disk, and a liquid reserve cavity with the same structure shape as its structure is provided at the center of the vertical rotating disk. The through hole at the rotating end of the support rotation mechanism communicates with the liquid reserve cavity. A rectangular nozzle for spraying the liquid inside the liquid reserve cavity is provided at the flat structure part of the vertical rotating disk. A plurality of strip-shaped wings protruding outward are provided on a part of the circumferential side of the vertical rotating disk.

[0005] Through the above technical solution: Utilizing the impact force of water flow, one: it can drive the spiral blade in the fixing rod, so that the rectangular nozzle is in a rotating state, realizing the spraying function in the annular area; two: realizing the necessary spraying function; three: forming an impact effect on the strip-shaped wings, so that the rectangular nozzle changes the spraying angle with the ground, thereby widening the range of the annular area and improving the irrigation range.

[0006] Preferably, when there is no external pressure on the plurality of strip-shaped wings, the strip-shaped wing in the middle section is on the same vertical line as the third liquid flow hole, and the arc length formed by the plurality of strip-shaped wings is greater than one-third and less than one-half of the circumference of the circumferential surface where they are located.

[0007] Through the above technical solution: It enables the water flow passing through the third liquid flow hole to generate an impact effect on one side of the strip-shaped wings, thereby driving the rectangular nozzle to change the angle, and improving the irrigation range.

[0008] Preferably, the pressure control mechanism includes a hollow housing. One end face of the hollow housing is provided with a fixing groove having the same outer shape structure as the circumferential side surface of the top cylindrical housing. A columnar movable cavity is provided at the center inside the hollow housing. A gas hole communicating the internal and external spaces is provided at the center of the other end face of the hollow housing. A movable piston plate is placed inside the hollow housing at the position of the columnar movable cavity. A first high-pressure sealing ring is sleeved on the circumferential side surface of the piston plate. A main reset spiral spring in a compressed state is installed on the end face of the piston plate at the position of the gas hole. A valve rod is installed at the center of the other end face of the piston plate. The rod body of the valve rod penetrates through the corresponding structure of the hollow housing and extends to the external space. A second high-pressure sealing ring is sleeved on the middle part of the valve rod. The fixing groove in the hollow housing is fixedly installed on the circumferential side surface of the top cylindrical housing. The valve rod is located inside the transverse component movable groove, and the second high-pressure sealing ring divides the space of the transverse component movable groove into two non-communicating regions. The spatial position of the end of the valve rod when the main reset spiral spring is in the initial state is on the side where the third liquid flow hole is blocked, and the structural radius of the cross section of the valve rod is larger than the structural radius of the third liquid flow hole. When the gas formed by the movement of the piston plate from one end to the other end of the columnar movable cavity passes through the gas hole, the damping time formed by the size of the gas hole is longer than the time required for each irrigation.

[0009] Through the above technical solution: The pressure of the liquid generates a tendency for one end of the valve rod to move. As a result, when the water flow enters the third liquid flow hole, a delay phenomenon will occur, causing the pressure of the liquid discharged through the third liquid flow hole to increase from small to large, and the time of increasing from small to large changes with the time of the internal air discharging outward through the gas hole. Since the damping time formed by the size of the gas hole is longer than the time required for each irrigation, the impact on the strip fins will be delayed until the end of the work, making the angle change of the rectangular nozzle slow, so that the irrigation of the same part has the characteristic of complete irrigation, improving the irrigation effect. At the same time, after the work is completed, the components will slowly return to their original positions under the action of the main reset spiral spring.

[0010] It can be known from the above description that: The size of the gas hole is completely determined by the time for the air inside the space on one side to be completely discharged outward. The smaller the structural radius of the gas hole, the longer the continuous damping time and the longer the irrigation time for the same part.

[0011] Preferably, there are two support rotation mechanisms. Each support rotation mechanism includes a vertical plate body with a connecting plate structure at the bottom. A liquid space communicating with the lower space is provided inside the vertical plate body and the connecting plate structure. The vertical plate body is provided with component mounting holes penetrating both sides near the top. A rotatable hollow rotating shaft is mechanically mounted inside the two component mounting holes through bearings and seals. A liquid discharge hole that is solid at one end and the other end is provided inside the hollow rotating shaft. A plurality of liquid through holes communicating the liquid space and the liquid discharge hole are provided on the shaft structure device of the hollow rotating shaft located inside the liquid space. The bearings and seals are mechanically mounted by sleeving on the shaft body of the hollow rotating shaft through the bearings and seals, and the hollow rotating shaft and the vertical plate body can rotate relative to each other. The two connecting plate structures are correspondingly mounted on the upper surface of the top cylindrical shell, and the liquid space is correspondingly communicated with a first liquid flow hole. Vertical rotating discs are mounted at the opposite ends of the two hollow rotating shafts, and the liquid discharge hole is correspondingly communicated with the liquid reserve cavity. A resilient mechanism is mounted on the side wall of the vertical plate body at the solid end face of the hollow rotating shaft through bolts.

[0012] Through the above technical solution: it can enable the water flow inside the liquid space to enter the rotating hollow rotating shaft, so that the water flow enters the rotating body, while realizing the necessary supporting function, it will not affect the rotation of the vertical rotating disc.

[0013] Preferably, the resilient mechanism includes an outer disc body with a mounting structure on one end face. A rotary mounting hole is provided in the center of the outer disc body. A fan-shaped rotating space extending outward is provided on a partial circumferential surface of the outer disc body located at the rotary mounting hole. A rotating body penetrating the mounting structure and the central structure of the outer disc body is provided in the center of the outer disc body, and the rotating body is mounted through a bearing at the penetrating part. One end structure of the rotating body extends into the rotary mounting hole. A fan-shaped limiting block with an integral structure is provided on the circumferential surface of the rotating body located in the fan-shaped rotating space. A sub-reset spiral spring in a compressed state is mounted inside the rotatable area between the fan-shaped limiting block and the fan-shaped rotating space. The mounting structure is mounted on the side structure of the vertical plate body through bolts. One end of the rotating body is butted against the solid end face of the hollow rotating shaft. The arc length of the rotatable area between the fan-shaped limiting block and the fan-shaped rotating space is the same as the arc length of the rotating area formed by the strip-shaped fins.

[0014] Through the above technical solution: when the vertical rotating disc rotates under the impact of water flow, the sub-reset spiral spring can be compressed. The compressed sub-reset spiral spring can reduce the rotation speed of the vertical rotating disc, thereby increasing the irrigation range. At the same time, when the sub-reset spiral spring resets, it can drive the linkage components to reset to the initial state.

[0015] Compared with the prior art, the present invention provides a greening maintenance device for garden environment construction, and has the following beneficial effects: 1. The greening maintenance device for garden environment construction utilizes the impact force of water flow. Firstly, it can make the rectangular nozzle rotate, realizing the spraying function in an annular area. Secondly, it can achieve the necessary spraying function. Thirdly, it can change the spraying angle between the rectangular nozzle and the ground, thereby widening the range of the annular area and increasing the irrigation range.

[0016] 2. The greening maintenance device for garden environment construction, through the pressure control mechanism, causes a delay when water flow enters the third liquid flow hole, making the pressure of the liquid discharged through the third liquid flow hole increase from small to large, and the time of increasing from small to large changes with the time of the internal air pressure discharging outward through the air hole, making the angle change of the rectangular nozzle slow, so that the irrigation of the same part has the characteristic of complete irrigation and improves the irrigation effect.

[0017] 3. The greening maintenance device for garden environment construction, through the support and rotation mechanism, can make the water flow inside the liquid space enter the rotating hollow rotating shaft, and then the water flow enters the rotating body, realizing the necessary support function while not affecting the rotation of the vertical rotating disk.

[0018] 4. The greening maintenance device for garden environment construction, through the spring-back mechanism, can compress the auxiliary return spiral spring. The compressed auxiliary return spiral spring can reduce the rotation speed of the vertical rotating disk, thereby increasing the irrigation range. At the same time, when the auxiliary return spiral spring resets, it can drive the linkage component to reset to the initial state. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the full-sectional structure schematic diagram of the present invention; Figure 2 is the three-dimensional view of the present invention; Figure 3 is the three-dimensional sectional view of the pressure control mechanism in the present invention; Figure 4 is the three-dimensional sectional view of the support and rotation mechanism in the present invention; Figure 5 is the full-sectional structure schematic diagram of the spring-back mechanism in the present invention.

[0020] Wherein: 1. Bottom cylindrical shell; 2. Top cylindrical shell; 3. Main mounting plate; 5. Liquid flow cavity; 6. Concave sleeve cavity; 7. Second liquid flow hole; 8. Lateral component activity groove; 9. Third liquid flow hole; 10. First liquid flow hole; 11. Fixed rod; 12. Pressure control mechanism; 121. Hollow shell; 122. Fixed groove; 123. Columnar activity cavity; 124. Air hole; 125. Piston plate; 126. First high-pressure sealing ring; 127. Main reset spiral spring; 128. Valve rod; 129. Second high-pressure sealing ring; 13. Support rotation mechanism; 131. Connecting plate structure; 132. Vertical plate body; 133. Liquid space; 134. Component mounting hole; 135. Mechanical mounting of bearing and sealing ring; 136. Hollow rotating shaft; 137. Liquid discharge hole; 138. Liquid through hole; 14. Vertical rotating disk; 15. Rebound mechanism; 151. Mounting structure; 152. Outer disk body; 153. Rotating mounting hole; 154. Sector rotation space; 155. Rotating body; 156. Sector limit block; 157. Sub-reset spiral spring; 16. Liquid reserve cavity; 18. Strip-shaped fin; 19. Plane structure; 20. Rectangular nozzle. Specific embodiments

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-5, a greening maintenance device for garden environment construction, including a bottom cylindrical housing 1 with a main mounting plate 3 at the bottom and a top cylindrical housing 2 with an upwardly concave sleeve cavity 6 on the bottom surface. The inner center of the bottom cylindrical housing 1 is provided with a liquid flow cavity 5 that connects the lower space and the upper space. The top cylindrical housing 2 is mechanically sleeved on the top outside of the bottom cylindrical housing 1 through a bearing and a sealing ring at the bottom of the concave sleeve cavity 6, and the top cylindrical housing 2 can rotate relative to the bottom cylindrical housing 1. A fixing rod 11 with a spiral blade fixed on one side is installed at the center of the bottom of the top cylindrical housing 2, and the fixing rod 11 and the spiral blade on its rod body extend into the interior of the liquid flow cavity 5. The interior of the top cylindrical housing 2 is provided with two opposite first liquid flow holes 10 that connect its upper and lower end faces. The interior of the top cylindrical housing 2 is provided with a transverse component activity groove 8. One end of the transverse component activity groove 8 is connected to the concave sleeve cavity 6 through a second liquid flow hole 7, and the middle part of the transverse component activity groove 8 is connected to the upper space of the top cylindrical housing 2 through a third liquid flow hole 9. A pressure control mechanism 12 that penetrates into the interior of the transverse component activity groove 8 and controls the liquid flow rate inside it through gas speed limiting is installed on the side of the top cylindrical housing 2. On the upper end face of the top cylindrical housing 2, at the top of each of the two first liquid flow holes 10, a support rotation mechanism 13 for liquid flow guidance is installed respectively. Between the opposite rotating bodies of the two support rotation mechanisms 13, a vertical rotating disk 14 is installed. The other rotating body ends of the two support rotation mechanisms 13 are respectively connected to a spring-back mechanism 15 for controlling the rotation angle of the vertical rotating disk 14. A flat structure 19 is provided on a part of the circumferential side surface of the vertical rotating disk 14, and a liquid reserve cavity 16 with the same structure shape as its structure is provided at the center of the vertical rotating disk 14. The through hole at the rotating end of the support rotation mechanism 13 is connected to the liquid reserve cavity 16. A rectangular nozzle 20 for spraying the liquid inside the liquid reserve cavity 16 is provided on the flat structure 19 of the vertical rotating disk 14. A plurality of strip-shaped wings 18 protruding outward are provided on a part of the circumferential side surface of the vertical rotating disk 14.

[0023] When there is no external pressure, the middle strip-shaped wing 18 of the plurality of strip-shaped wings 18 is on the same vertical line as the third liquid flow hole 9, and the arc length formed by the plurality of strip-shaped wings 18 is greater than one-third and less than one-half of the circumference of the circumferential surface where they are located.

[0024] The pressure control mechanism 12 includes a hollow housing 121. One end face of the hollow housing 121 is provided with a fixing groove 122 having the same outer shape structure as the circumferential side surface of the top cylindrical housing 2. A columnar activity cavity 123 is provided at the center inside the hollow housing 121. A gas hole 124 communicating the internal and external spaces is provided at the center of the other end face of the hollow housing 121. An activatable piston plate 125 is placed inside the hollow housing 121 in the columnar activity cavity 123. A first high-pressure sealing ring 126 is sleeved on the circumferential side surface of the piston plate 125. A main reset spiral spring 127 in a compressed state is installed on the end face of the piston plate 125 located at the gas hole 124. A valve rod 128 is installed at the center of the other end face of the piston plate 125. The rod body of the valve rod 128 penetrates through the structure of the corresponding part of the hollow housing 121 and extends to the external space. A second high-pressure sealing ring 129 is sleeved in the middle of the valve rod 128; the fixing groove 122 in the hollow housing 121 is fixedly installed on the circumferential side surface of the top cylindrical housing 2. The valve rod 128 is located inside the lateral component activity groove 8, and the second high-pressure sealing ring 129 forms two non-communicating regions in the space of the lateral component activity groove 8; the spatial position of the end of the valve rod 128 when the main reset spiral spring 127 is in the initial state is on the side where the third liquid flow hole 9 is blocked, and the structural radius of the cross-section of the valve rod 128 is greater than the structural radius of the third liquid flow hole 9. When the gas formed by the movement of the piston plate 125 from one end to the other end of the columnar activity cavity 123 passes through the gas hole 124, the damping time formed by the size of the gas hole 124 is greater than the time required for each irrigation.

[0025] The support rotating mechanism 13 includes two. Each support rotating mechanism 13 includes a vertical plate body 132 with a connecting plate structure 131 at the bottom. A liquid space 133 communicating with the lower space is provided inside the vertical plate body 132 and the connecting plate structure 131. The vertical plate body 132 is provided with component mounting holes 134 penetrating both sides near the top. A rotatable hollow rotating shaft 136 is mechanically mounted in the two component mounting holes 134 through bearings and seals. A liquid discharge hole 137 that is solid at one end and the other end and communicates with the inside of the hollow rotating shaft 136 is provided. The hollow rotating shaft 136 is provided with a plurality of liquid through holes 138 in the shaft structure device located inside the liquid space 133 to communicate the liquid space 133 and the liquid discharge hole 137. The mechanical mounting of the bearings and seals 135 is to be sleeved on the shaft body of the hollow rotating shaft 136 through bearings and seals, and the hollow rotating shaft 136 and the vertical plate body 132 can rotate relative to each other. The two connecting plate structures 131 are correspondingly mounted on the upper surface of the top cylindrical shell 2, and the liquid space 133 correspondingly communicates with a first liquid flow hole 10. The two hollow rotating shafts 136 are mounted with vertical rotating disks 14 at the opposite ends, and the liquid discharge hole 137 correspondingly communicates with the liquid reserve cavity 16. The vertical plate body 132 is mounted with a resilient mechanism 15 on the side wall at the solid end face of the hollow rotating shaft 136 through bolts.

[0026] The resilient mechanism 15 includes an outer disk body 152 with a mounting structure 151 at one end face. A rotary mounting hole 153 is provided at the center of the outer disk body 152. The outer disk body 152 is provided with a fan-shaped rotating space 154 extending outward on a partial circumferential surface located at the rotary mounting hole 153. A rotating body 155 penetrating the mounting structure 151 and the central structure of the outer disk body 152 is provided at the center of the outer disk body 152, and the rotating body 155 is mounted through a bearing at the penetrating part. One end structure of the rotating body 155 extends into the inside of the rotary mounting hole 153. The rotating body 155 is provided with an integrally formed fan-shaped limiting block 156 on the circumferential surface located in the fan-shaped rotating space 154. A sub-reset spiral spring 157 in a compressed state is installed inside the rotatable area between the fan-shaped limiting block 156 and the fan-shaped rotating space 154. The mounting structure 151 is mounted on the side structure of the vertical plate body 132 through bolts. One end of the rotating body 155 is butt-jointed with the solid end face of the hollow rotating shaft 136. The arc length of the rotatable area between the fan-shaped limiting block 156 and the fan-shaped rotating space 154 is the same as the arc length of the rotating area formed by the strip-shaped fins 18.

[0027] In use, the main mounting plate 3 is butted against the top of the drainage pipe embedded in the ground surface through bolts. When irrigation is required, the main switch controlling the water flow is turned on. The water flow under high pressure flows upward through the spiral blades. The flowing water exerts a driving effect on the spiral blades, so that the fixed rod 11 drives the top cylindrical shell 2 and the rectangular nozzle 20 to rotate. At the same time, the water flow passes through each passage, and the rectangular nozzle 20 performs rotary spraying. The water flow also generates a tendency to move one end of the valve rod 128. Therefore, when the water flow enters the third liquid flow hole 9, a delay phenomenon will occur, making the pressure of the liquid discharged through the third liquid flow hole 9 increase from small to large, and the time of increasing from small to large changes with the time of the internal air pressure discharged through the air hole 124. Since the damping time formed by the size of the air hole 124 is greater than the time required for each irrigation, the impact on the strip fins 18 will be delayed until the end of the work, making the angle change of the rectangular nozzle 20 slow, improving the irrigation effect. At the same time, after the work is completed, the water flow pressure disappears, and the components are slowly reset under the action of the main reset spiral spring 127 and the auxiliary reset spiral spring 157.

[0028] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A greening maintenance device for garden environment construction, comprising a bottom cylindrical shell (1) with a main mounting plate (3) provided at the bottom and a top cylindrical shell (2) with an upwardly concave sleeve cavity (6) provided on the bottom surface. A liquid flow cavity (5) communicating the lower space and the upper space is provided at the center inside the bottom cylindrical shell (1). The top cylindrical shell (2) is mechanically sleeved on the top outside the bottom cylindrical shell (1) through a bearing and a sealing ring at the bottom of the concave sleeve cavity (6), and the top cylindrical shell (2) can rotate relative to the bottom cylindrical shell (1). It is characterized in that: A fixing rod (11) with a spiral blade fixed to one side of the bottom center of the top cylindrical shell (2) is installed, and the fixing rod (11) and the spiral blade on its rod body extend into the interior of the liquid flow chamber (5). Two opposite first liquid flow holes (10) that communicate with its upper and lower end faces are provided inside the top cylindrical shell (2). A transverse component moving groove (8) is provided inside the top cylindrical shell (2). One end of the transverse component moving groove (8) communicates with the concave sleeve cavity (6) through a second liquid flow hole (7). The middle part of the transverse component moving groove (8) communicates with the space above the top cylindrical shell (2) through a third liquid flow hole (9). A pressure control mechanism (12) that penetrates into the transverse component moving groove (8) and controls the liquid flow rate inside it through gas speed limiting is installed on the side of the top cylindrical shell (2). Support rotating mechanisms (13) for guiding liquid flow are respectively installed at the top ends of the two first liquid flow holes (10) on the upper end face of the top cylindrical shell (2). A vertical rotating disk (14) is installed between the opposite rotating bodies of the two support rotating mechanisms (13). The other rotating body ends of the two support rotating mechanisms (13) are respectively connected to a rebound mechanism (15) for controlling the rotation angle of the vertical rotating disk (14). A flat structure (19) is provided on a part of the circumferential side of the vertical rotating disk (14). A liquid reserve cavity (16) with the same structural shape as its outer shape is provided at the center of the vertical rotating disk (14). The through hole at the rotating end of the support rotating mechanism (13) communicates with the liquid reserve cavity (16). A rectangular nozzle (20) for spraying the liquid inside the liquid reserve cavity (16) is provided at the flat structure (19) part of the vertical rotating disk (14). A plurality of strip-shaped fins (18) protruding outward are provided on a part of the circumferential side of the vertical rotating disk (14).

2. The greening maintenance device for garden environment construction according to claim 1, wherein: When there is no external pressure, the middle strip-shaped fins (18) are on the same vertical line as the third liquid flow hole (9), and the arc length formed by the plurality of strip-shaped fins (18) is greater than one-third and less than one-half of the circumference of the circumferential surface where they are located.

3. A greening maintenance device for garden environment construction according to claim 2, characterized in that: The pressure control mechanism (12) includes a hollow housing (121). One end face of the hollow housing (121) is provided with a fixing groove (122) having the same outer shape structure as the circumferential side surface of the top cylindrical housing (2). A columnar movable cavity (123) is provided at the center inside the hollow housing (121). A gas hole (124) communicating the internal and external spaces is provided at the center of the other end face of the hollow housing (121). A movable piston plate (125) is placed inside the hollow housing (121) at the position of the columnar movable cavity (123). A first high-pressure sealing ring (126) is sleeved on the circumferential side surface of the piston plate (125). A main reset spiral spring (127) in a compressed state is installed on the end face of the piston plate (125) at the position of the gas hole (124). A valve stem (128) is installed at the center of the other end face of the piston plate (125). The rod body of the valve stem (128) penetrates through the structure of the corresponding part of the hollow housing (121) and extends to the external space. A second high-pressure sealing ring (129) is sleeved in the middle of the valve stem (128).

4. A greening maintenance device for garden environment construction according to claim 3, characterized in that: The fixing groove (122) in the hollow housing (121) is fixedly installed on the circumferential side surface of the top cylindrical housing (2). The valve stem (128) is located inside the lateral component movable groove (8), and the second high-pressure sealing ring (129) divides the space of the lateral component movable groove (8) into two non-communicating regions.

5. The greening maintenance device for garden environment construction according to claim 4, wherein: The spatial position of the end of the valve stem (128) when the main reset spiral spring (127) is in the initial state is on the side where the third liquid flow hole (9) is blocked, and the structural radius of the cross-section of the valve stem (128) is greater than the structural radius of the third liquid flow hole (9). When the gas formed by the piston plate (125) moving from one end to the other end of the columnar movable cavity (123) passes through the gas hole (124), the damping time formed by the size of the gas hole (124) is greater than the time required for each irrigation.

6. The greening maintenance device for garden environment construction according to claim 5, wherein: The support rotation mechanism (13) includes two. Each support rotation mechanism (13) includes a vertical plate body (132) with a connecting plate structure (131) at the bottom. A liquid space (133) communicating with the lower space is provided inside the vertical plate body (132) and the connecting plate structure (131). Component mounting holes (134) penetrating both sides are provided at the position near the top of the vertical plate body (132). A rotatable hollow rotating shaft (136) is mechanically installed (135) inside the two component mounting holes (134) through bearings and sealing rings. A liquid discharge hole (137) that is solid at both ends and communicates with one end and the other end is provided inside the hollow rotating shaft (136). A plurality of liquid through holes (138) connecting the liquid space (133) and the liquid discharge hole (137) are provided on the shaft body structure of the hollow rotating shaft (136) inside the liquid space (133).

7. The greening maintenance device for garden environment construction according to claim 6, characterized in that: The mechanical installation (135) of the bearings and sealing rings is to sleeve the bearings and sealing rings on the shaft body of the hollow rotating shaft (136), and the hollow rotating shaft (136) and the vertical plate body (132) can rotate relative to each other.

8. A greening maintenance device for garden environment construction according to claim 7, characterized in that: The two connecting plate structures (131) are correspondingly mounted on the upper surface of the top cylindrical shell (2), and the liquid space (133) is correspondingly connected to a first liquid flow hole (10); the two hollow rotating shafts (136) are equipped with vertical rotating disks (14) at opposite ends, and the liquid discharge hole (137) is correspondingly connected to the liquid reserved cavity (16); and a rebound mechanism (15) is mounted on the side wall of the vertical plate body (132) located at the solid end surface of the hollow rotating shaft (136) through bolts.

9. The greening maintenance device for garden environment construction according to claim 8, characterized in that: The rebound mechanism (15) comprises an outer disk body (152) having a mounting structure (151) at one end face, a rotation mounting hole (153) at the center of the outer disk body (152), a fan-shaped rotation space (154) extending outwardly provided on a portion of the circumferential surface of the outer disk body (152) located at the rotation mounting hole (153), a rotating body (155) penetrating the mounting structure (151) and the central structure of the outer disk body (152) provided at the center of the outer disk body (152), and the rotating body (155) is mounted at the through portion by a bearing, one end structure of the rotating body (155) extends to the inside of the rotation mounting hole (153), the rotating body (155) is provided with a fan-shaped limit block (156) of an integral structure on the circumferential surface of the fan-shaped rotation space (154), and a secondary return coil spring (157) in a compressed state is installed inside the rotatable area between the fan-shaped limit block (156) and the fan-shaped rotation space (154).

10. A greening maintenance device for garden environment construction according to claim 9, characterized in that: The mounting structure (151) is mounted on the side structure of the vertical plate (132) by means of bolts, one end of the rotating body (155) is connected to the solid end face of the hollow rotating shaft (136), and the arc length of the rotatable area between the fan-shaped limit block (156) and the fan-shaped rotating space (154) is the same as the arc length of the rotating area formed by the strip wing (18).

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