Municipal greening construction device

Abstract

The application discloses a kind of municipal afforestation construction devices, belong to afforestation construction device technical field, it includes water supply pipe and branch pipe, branch pipe is fixedly arranged on water supply pipe, the top of branch pipe is respectively provided with water collector and spray head, branch pipe is fixedly communicated with spray head by water collector;Filter screen is fixedly arranged in the nozzle of both ends of spray head, and self-adapting adjusting mechanism is further arranged in the inside of spray head, the self-adapting adjusting mechanism includes adjusting plate and upper compression spring, the inside of spray head is slidably arranged with adjusting plate, and the inside of spray head is fixedly arranged with adjusting plate by upper compression spring, in working condition, adjusting plate makes the effective water area of filter screen reduce with the reduction of water pressure pressure;The application, by the self-adapting adjusting mechanism arranged, can make the adjusting plate automatically adjust the effective water area of filter screen according to the pressure of water flow, to ensure the effective spraying range of spray head.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of greening construction devices, and specifically relates to a municipal greening construction device. BACKGROUND

[0002] In the process of municipal greening construction, water spraying operation needs to be performed on the newly transplanted green lawn in the growth process by using a greening construction device to ensure the good growth of the green lawn; for example, a green land surface uniform water spraying device disclosed in a patent document with the authorized announcement number CN211558294U comprises an outer sleeve pipe and an extension pipe; the extension pipe is inserted into the second end of the outer sleeve pipe, the second end of the extension pipe extends out of the outer sleeve pipe, the extension pipe is in communication with the outer sleeve pipe, and the second end of the extension pipe and the first end of the outer sleeve pipe are both blocked; the extension pipe is coaxially arranged with the outer sleeve pipe and is slidingly installed along the axial direction of the outer sleeve pipe; a plurality of groups of water spraying holes distributed on a plane perpendicular to the axial direction of the extension pipe are arranged on the extension pipe, and each group of water spraying holes is uniformly distributed along the circumferential direction of the extension pipe. In the utility model, during the water spraying process of the extension pipe, the water flow sprayed by each water spraying hole forms a parabolic line to irrigate the green land, the water spraying holes closer to the second end of the extension pipe have a farther irrigation distance from the outer sleeve pipe, and the water spraying holes closer to the first end of the extension pipe have a closer irrigation distance to the outer sleeve pipe, thereby achieving uniform irrigation of the green land in the responsibility area of the water spraying device; however, the device has the following defects:

[0003] When the water source is closed, the water flow will still flow at a low speed through the spray head under the action of the water flow, the soil under the spray head is muddy, water resources are wasted, and when the water pressure in the water pipe decreases, the spraying distance of the spray head is greatly reduced. SUMMARY

[0004] In view of the above problems, the present application provides a municipal greening construction device to effectively solve the problems that when the water source is closed, the water flow will still flow at a low speed through the spray head under the action of the water flow, the soil under the spray head is muddy, water resources are wasted, and when the water pressure in the water pipe decreases, the spraying distance of the spray head is greatly reduced.

[0005] In order to achieve the above object, the present application provides the following technical scheme: a municipal afforesting construction device, comprising a water supply pipe and a branch pipe, the branch pipe is fixedly arranged on the water supply pipe, a water collector and a spray head are arranged above the branch pipe respectively, the branch pipe is fixedly communicated with the spray head through the water collector, a filter screen is fixedly arranged in the spray opening of the two ends of the spray head, an adaptive adjusting mechanism is further arranged in the spray head, the adaptive adjusting mechanism comprises an adjusting plate and an upper compression spring, the adjusting plate is slidingly arranged in the spray head, and the adjusting plate is fixedly arranged with the inner top wall of the spray head through the upper compression spring; in the working state, the adjusting plate reduces the effective water outlet area of the filter screen with the reduction of the water pressure.

[0006] Preferably, the adaptive adjusting mechanism further comprises a connecting rod, a plug body and an automatic cleaning piece; the connecting rod is fixedly arranged at the middle part of the adjusting plate, the plug body is fixedly arranged at the bottom end of the connecting rod, the plug body is matched with the water inlet of the spray head, and the automatic cleaning piece is symmetrically arranged at the two ends of the adjusting plate.

[0007] Preferably, the automatic cleaning piece comprises a fixed plate, a rod body, a side telescopic spring, a mounting plate and an inner cleaning brush; the fixed plate is fixedly arranged above the end of the adjusting plate, the rod body is T-shaped, the rod body is movably arranged in the rod hole of the adjusting plate, the side telescopic spring is located between the fixed plate and the mounting plate and surrounds the outside of the rod body, the mounting plate is fixedly arranged on the rod body, and the inner cleaning brush is fixedly arranged on the mounting plate.

[0008] Preferably, the adaptive adjusting mechanism further comprises an adaptive sealing piece; in the open state of the spray head, the adaptive sealing piece does not block the filter screen, and in the closed state of the spray head, the adaptive sealing piece blocks the filter screen.

[0009] Preferably, the adaptive sealing piece comprises a positioning rod, a strip-shaped plate and a sealing plate; the positioning rod is fixedly arranged above the adjusting plate, a rod hole is formed in the positioning rod for the positioning rod to slide, the strip-shaped plate is fixedly arranged at the top end of the positioning rod, and the sealing plate is symmetrically fixedly arranged at the two ends of the strip-shaped plate.

[0010] Preferably, the sealing plate is L-shaped, an open slot is formed in the side of the sealing plate close to the adjusting plate, and an outer cleaning brush is fixedly arranged in the open slot.

[0011] Preferably, the water collector comprises a shell, a sliding plate, a reset spring, a connecting frame, a baffle, a blocking ring and a pipe joint; the shell is fixedly arranged at the end of the branch pipe, the end of the branch pipe extends into the shell, the sliding plate is slidingly arranged in the shell, the inside of the shell is divided into an upper cavity and a lower cavity through the sliding plate, the reset spring is located between the sliding plate and the inner bottom wall of the lower cavity, the connecting frame is fixedly arranged at the top end of the sliding plate, the baffle is fixedly arranged at the center of the connecting frame and above the pipe opening of the branch pipe, the blocking ring is fixedly arranged on the inner wall of the upper cavity, the pipe joint is fixedly arranged at the top end of the shell, and the pipe joint is fixedly communicated with the water inlet of the spray head.

[0012] Preferably, the branch pipe is further provided with a controller for automatically opening and closing the branch pipe according to the soil humidity.

[0013] Preferably, the controller comprises a containing shell, a conduit and a mounting shell fixedly arranged on the outer wall of the branch pipe and in communication with the inside of the branch pipe, the mounting shell being fixedly communicated with the containing shell through the conduit; wherein the containing shell is uniformly provided with water-permeable holes at the end away from the conduit, the inside of the containing shell is movably provided with a supporting spring, a sliding column and a rubber water-absorbing strip, the sliding column is located between the supporting spring and the rubber water-absorbing strip, the supporting spring is close to the conduit, and the inside of the mounting shell is slidably provided with a locking block for plugging the branch pipe.

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] 1) In work, the self-adaptive adjusting mechanism can automatically adjust the effective water outlet area of the filter screen according to the pressure of the water flow, so as to ensure the effective spraying range of the nozzle.

[0016] 2) In work, the automatic cleaning member and the self-adaptive sealing member can automatically clean the inner and outer surfaces of the filter screen during the opening and closing of the water flow, so as to ensure the water outlet effect of the filter screen; and the self-adaptive sealing member can cover the two sides of the nozzle to protect the nozzle, the adjusting plate and the plug body can form double sealing of the nozzle, so as to avoid the dripping of the water flow from the nozzle.

[0017] 3) The water collector can collect part of the water flow in the nozzle into the inside of the water collector when the water flow is closed, so as to avoid the dripping of the water flow and save water resources.

[0018] 4) The controller can automatically control the closing of the nozzle when the soil is relatively wet and automatically control the opening of the nozzle when the soil is relatively dry, so as to ensure that the spraying water amount is within a suitable range and avoid the waste of water resources. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application and explain the principles of the present application, and do not constitute a limitation of the present application.

[0020] In the drawings:

[0021] Figure 1 It is a structure schematic view of a municipal greening construction device of the present application.

[0022] Figure 2 It is an internal structure schematic view of a nozzle of the present application.

[0023] Figure 3 Structure diagram of adaptive adjusting mechanism of the present application;

[0024] Figure 4 Structure diagram of adaptive adjusting mechanism of the present application; Figure 3 Structure diagram of adaptive adjusting mechanism of the present application;

[0025] Figure 5 Structure diagram of adaptive sealing member of the present application;

[0026] Figure 6 Structure diagram of adaptive sealing member of the present application;

[0027] Figure 7 Structure diagram of adaptive adjusting mechanism of the present application; Figure 6 Structure diagram of adaptive adjusting mechanism of the present application;

[0028] Figure 8 Structure diagram of water collector of the present application;

[0029] Figure 9 Structure diagram of controller of the present application;

[0030] In the figure: 1, water supply pipe; 2, branch pipe; 3, water collector; 301, shell; 302, sliding plate; 303, lower cavity; 304, upper cavity; 305, return spring; 306, connecting frame; 307, baffle; 308, blocking ring; 309, pipe joint; 4, spray head; 5, filter screen; 6, adaptive adjusting mechanism; 601, adjusting plate; 602, upper compression spring; 603, connecting rod; 604, plug body; 7, automatic cleaning member; 701, fixed plate; 702, rod body; 703, side telescopic spring; 704, mounting plate; 705, inner cleaning brush; 8, adaptive sealing member; 801, positioning rod; 802, strip plate; 803, sealing plate; 804, opening slot; 805, outer cleaning brush; 9, controller; 901, containing shell; 902, conduit; 903, mounting shell; 904, water-permeable hole; 905, supporting spring; 906, sliding column; 907, rubber water absorbing strip; 908, locking block. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application; based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0032] are given by Figures 1-9

[0033] are given by Figures 1-3 ​The present application relates to a kind of municipal afforestation construction devices, to solve the problem that part of water still flows at low speed through the nozzle under the action of water flow when water source is closed in the background art, leading to the soil below the nozzle is more muddy, causing water resource waste, and when the water pressure in water pipe reduces, leading to the spray distance of nozzle is substantially reduced, it includes water supply pipe 1 and branch pipe 2, branch pipe 2 is fixedly arranged on water supply pipe 1, the upper portion of branch pipe 2 is respectively provided with water collector 3 and nozzle 4, branch pipe 2 is fixedly communicated with nozzle 4 by water collector 3;Filter screen 5 is fixedly arranged in the nozzle of both ends of nozzle 4, foreign matter or dust is avoided to enter the inside of nozzle 4 by filter screen 5, self-adapting adjusting mechanism 6 is also provided in the inside of nozzle 4, self-adapting adjusting mechanism 6 includes adjusting plate 601 and upper compression spring 602, adjusting plate 601 is slidably arranged in the inside of nozzle 4, adjusting plate 601 is fixedly arranged with the inner top wall of nozzle 4 by upper compression spring 602, in working condition, adjusting plate 601 makes the effective water area of filter screen 5 reduce with the reduction of water pressure;

[0034] In this way, water supply pipe 1 is buried in the soil of municipal afforestation lawn, branch pipe 2 is supplied with water by water supply pipe 1, when water supply pipe 1 is opened, water flow enters the inside of branch pipe 2 through water supply pipe 1, then enters the inside of nozzle 4 through water collector 3 and is sprayed after filter screen 5, so as to carry out spray operation on the surrounding lawn;During the period, water flow impacts adjusting plate 601, so that adjusting plate 601 extrudes upper compression spring 602, so that adjusting plate 601 no longer intercepts the effective water area of filter screen 5, and when the water pressure reduces, adjusting plate 601 moves downward under the action of upper compression spring 602, so as to reduce the effective water area of filter screen 5, at this time, the spray range of nozzle 4 can still be relatively far by this way, and when water supply pipe 1 is closed, adjusting plate 601 is attached to the nozzle opening of nozzle 4 under the action of upper compression spring 602, to play the role of closing nozzle 4, which is more convenient.

[0035] Reference Figures 3-4 To further improve the sealing performance of nozzle 4 when it is closed, self-adapting adjusting mechanism 6 also includes connecting rod 603, plug body 604 and automatic cleaning piece 7;Connecting rod 603 is fixedly arranged in the middle of adjusting plate 601, plug body 604 is fixedly arranged at the bottom end of connecting rod 603, plug body 604 is concave-convex matched with the water inlet of nozzle 4, automatic cleaning piece 7 is symmetrically arranged at both ends of adjusting plate 601;

[0036] In this way, plug body 604 can be impacted by water flow, and plug body 604 drives adjusting plate 601 to move through connecting rod 603;And when water supply pipe 1 is closed, the water inlet of nozzle 4 can also be plugged by plug body 604, so as to further enhance the sealing effect of nozzle 4.

[0037] Considering that the surface of the filter screen 5 will accumulate a lot of scale after a long period of use, the scale reduces the effective water outlet area of the filter screen 5, and therefore the automatic cleaning piece 7 is arranged, specifically, the automatic cleaning piece 7 comprises a fixed plate 701, a rod body 702, a side telescopic spring 703, a mounting plate 704 and an inner cleaning brush 705; the fixed plate 701 is fixedly arranged above the end of the adjusting plate 601, the rod body 702 is T-shaped, the rod body 702 is movably arranged in the rod hole on the adjusting plate 601, the side telescopic spring 703 is located between the fixed plate 701 and the mounting plate 704 and surrounds the outside of the rod body 702, the mounting plate 704 is fixedly arranged on the rod body 702, and the inner cleaning brush 705 is fixedly arranged on the mounting plate 704;

[0038] In this way, under the action of the side telescopic spring 703, the inner cleaning brush 705 always abuts against the inner side of the filter screen 5, and when the inner cleaning brush 705 moves upward or downward along with the upward or downward movement of the adjusting plate 601, the scale on the inner surface of the filter screen 5 can be automatically cleaned, which is more convenient.

[0039] With reference to Figures 5-6 Considering that a lot of dust is generated in the process of greening construction, in order to maintain the good performance of the spray head 4, the self-adaptive adjusting mechanism 6 further comprises a self-adaptive sealing piece 8, the self-adaptive sealing piece 8 does not block the filter screen 5 in the open state of the spray head 4, and the self-adaptive sealing piece 8 blocks the filter screen 5 in the closed state of the spray head 4;

[0040] The self-adaptive sealing piece 8 comprises a positioning rod 801, a strip-shaped plate 802 and a sealing plate 803; the positioning rod 801 is fixedly arranged above the adjusting plate 601, and a rod hole is formed in the spray head 4 for the positioning rod 801 to slide, the strip-shaped plate 802 is fixedly arranged at the top end of the positioning rod 801, and the sealing plate 803 is symmetrically fixedly arranged at the two ends of the strip-shaped plate 802;

[0041] In this way, when the adjusting plate 601 moves, the strip-shaped plate 802 is driven to move by the positioning rod 801, and the sealing plate 803 is driven to move by the strip-shaped plate 802, so that the sealing plate 803 moves away from the filter screen 5 after moving with the adjusting plate 601 when the spray head 4 is used, and the sealing plate 803 moves close to the filter screen 5 after moving with the adjusting plate 601 when the spray head 4 is not used, thereby covering the filter screen 5 and playing a role in isolating and protecting the nozzle of the spray head 4.

[0042] With reference to Figure 7 Considering that dust and materials such as willow catkins in the air will also adhere to the surface of the filter screen 5 in actual use, the sealing plate 803 is L-shaped, an open slot 804 is formed in the side of the sealing plate 803 close to the adjusting plate 601, and an outer cleaning brush 805 is fixedly arranged in the open slot 804;

[0043] In this way, the outer cleaning brush 805 is driven by the sealing plate 803 to clean the outer surface of the filter screen 5 during the up-and-down movement of the adjusting plate 601, so as to ensure the effective water outlet area of the filter screen 5.

[0044] Reference Figure 8 In order to avoid the waste of water resources caused by the dripping of water in the spray head 4 during the closing of the water supply pipe 1, the water collector 3 comprises a shell 301, a sliding plate 302, a reset spring 305, a connecting frame 306, a baffle 307, a baffle ring 308 and a pipe joint 309; the shell 301 is fixedly arranged at the end of the branch pipe 2, and the end of the branch pipe 2 extends into the shell 301; the sliding plate 302 is slidingly arranged in the shell 301; the shell 301 is divided into an upper cavity 304 and a lower cavity 303 by the sliding plate 302; the reset spring 305 is located between the sliding plate 302 and the inner bottom wall of the lower cavity 303; the connecting frame 306 is fixedly arranged at the top end of the sliding plate 302; the baffle 307 is fixedly arranged at the center of the connecting frame 306 and above the pipe opening of the branch pipe 2; the baffle ring 308 is fixedly arranged on the inner wall of the upper cavity 304; and the pipe joint 309 is fixedly arranged at the top end of the shell 301 and fixedly communicated with the water inlet of the spray head 4.

[0045] In this way, when the water supply pipe 1 supplies water, the water flow impacts the baffle 307, the baffle 307 drives the sliding plate 302 to move upward through the connecting frame 306, so as to reduce the air pressure in the lower cavity 303 and make the reset spring 305 in a stretched state; when the water supply pipe 1 stops supplying water, the sliding plate 302 moves downward under the action of the reset spring 305 and the air pressure in the lower cavity 303, so that the space of the upper cavity 304 increases under the negative pressure, and the water in the spray head 4 enters the upper cavity 304 under the negative pressure, thereby avoiding the dripping of water when the water supply stops, and saving water resources.

[0046] Reference Figure 9 Since the spraying time of the green lawn is generally controlled by manual operation, the spraying time is too long, which leads to the waste of water resources, or the spraying time is too short, which cannot achieve the desired water spraying effect, therefore, the controller 9 for automatically opening and closing the branch pipe 2 according to the soil humidity is further arranged on the branch pipe 2.

[0047] The controller 9 comprises a containing shell 901, a conduit 902 and a mounting shell 903 fixedly arranged on the outer wall of the branch pipe 2 and in communication with the interior of the branch pipe 2, the mounting shell 903 is in fixed communication with the containing shell 901 through the conduit 902; wherein the containing shell 901 is uniformly provided with water-permeable holes 904 at the end away from the conduit 902, the interior of the containing shell 901 is movably provided with a supporting spring 905, a sliding column 906 and a rubber water-absorbing strip 907, the sliding column 906 is located between the supporting spring 905 and the rubber water-absorbing strip 907, the supporting spring 905 is close to the conduit 902, the interior of the mounting shell 903 is slidably provided with a locking block 908 for plugging the branch pipe 2;

[0048] In this way, in use, the controller 9 is buried in the soil of the green lawn, when the nozzle 4 sprays water flow, the water flow enters the interior of the containing shell 901 through the water-permeable holes 904, the rubber water-absorbing strip 907 expands to press the sliding column 906 after absorbing water, so that the liquid between the sliding column 906 and the containing shell 901 enters the interior of the mounting shell 903 through the conduit 902, and pushes the locking block 908, so that the locking block 908 enters the interior of the branch pipe 2 to plug it; when the soil humidity is relatively dry, the rubber water-absorbing strip 907 will decrease in volume due to water evaporation, under the action of the supporting spring 905, the sliding column 906 moves towards the rubber water-absorbing strip 907, and the locking block 908 moves to no longer plug the branch pipe 2, at this time, the water flow can enter the interior of the branch pipe 2 and finally be sprayed out through the nozzle 4, so that the opening and closing of the nozzle 4 can be automatically controlled according to actual needs.

[0049] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or operation from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or equipment.

[0050] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A municipal afforesting construction device, comprising a water supply pipe (1) and a branch pipe (2), the branch pipe (2) being fixedly arranged on the water supply pipe (1), characterized in that, The upper part of the branch pipe (2) is respectively provided with a water collector (3) and a spray head (4), the branch pipe (2) is fixedly communicated with the spray head (4) through the water collector (3); the spray head (4) is fixedly provided with a filter screen (5) in the nozzle at both ends, and the inside of the spray head (4) is further provided with a self-adaptive adjusting mechanism (6), the self-adaptive adjusting mechanism (6) comprises an adjusting plate (601) and an upper compression spring (602), the adjusting plate (601) is slidingly arranged in the inside of the spray head (4), and the adjusting plate (601) is fixedly arranged with the inner top wall of the spray head (4) through the upper compression spring (602); in the working state, the effective water outlet area of the filter screen (5) is reduced as the water pressure decreases. The water collector (3) comprises a shell (301), a sliding plate (302), a reset spring (305), a connecting frame (306), a baffle (307), a blocking ring (308) and a pipe joint (309); the shell (301) is fixedly arranged at the end of the branch pipe (2), and the end of the branch pipe (2) extends into the inside of the shell (301); the sliding plate (302) is slidingly arranged in the inside of the shell (301), and the inside of the shell (301) is divided into an upper cavity (304) and a lower cavity (303) through the sliding plate (302); the reset spring (305) is located between the sliding plate (302) and the inner bottom wall of the lower cavity (303); the connecting frame (306) is fixedly arranged at the top end of the sliding plate (302); the baffle (307) is fixedly arranged at the center of the connecting frame (306) and located above the pipe opening of the branch pipe (2); the blocking ring (308) is fixedly arranged on the inner wall of the upper cavity (304); the pipe joint (309) is fixedly arranged at the top end of the shell (301) and fixedly communicated with the water inlet of the spray head (4). The branch pipe (2) is further provided with a controller (9) for controlling the automatic opening and closing of the branch pipe (2) according to the soil humidity. The controller (9) comprises a containing shell (901), a conduit (902) and a mounting shell (903), the mounting shell (903) is fixedly arranged on the outer wall of the branch pipe (2) and communicated with the inside of the branch pipe (2), and the mounting shell (903) is fixedly communicated with the containing shell (901) through the conduit (902); the containing shell (901) is uniformly provided with water permeable holes (904) at the end away from the conduit (902), and the inside of the containing shell (901) is movably provided with a supporting spring (905), a sliding column (906) and a rubber water absorbing strip (907), the sliding column (906) is located between the supporting spring (905) and the rubber water absorbing strip (907), and the supporting spring (905) is close to the conduit (902); the inside of the mounting shell (903) is slidingly provided with a locking block (908) for blocking the branch pipe (2).

2. The municipal greening construction device according to claim 1, characterized in that: The self-adapting adjusting mechanism (6) further comprises a connecting rod (603), a plug body (604) and an automatic cleaning piece (7); the connecting rod (603) is fixedly arranged at the middle part of the adjusting plate (601), the plug body (604) is fixedly arranged at the bottom end of the connecting rod (603), the plug body (604) is matched with the water inlet of the nozzle (4), and the automatic cleaning piece (7) is symmetrically arranged at the two ends of the adjusting plate (601).

3. The municipal greening construction device according to claim 2, characterized in that: The automatic cleaning piece (7) comprises a fixed plate (701), a rod body (702), a side telescopic spring (703), a mounting plate (704) and an inner cleaning brush (705); the fixed plate (701) is fixedly arranged above the end of the adjusting plate (601), the rod body (702) is in the shape of T, the rod body (702) is movably arranged in the rod hole of the adjusting plate (601), the side telescopic spring (703) is located between the fixed plate (701) and the mounting plate (704) and surrounds the outer side of the rod body (702), the mounting plate (704) is fixedly arranged on the rod body (702), and the inner cleaning brush (705) is fixedly arranged on the mounting plate (704).

4. The municipal greening construction device according to claim 1, characterized in that: The self-adapting adjusting mechanism (6) further comprises a self-adapting sealing piece (8); in the open state of the nozzle (4), the self-adapting sealing piece (8) does not block the filter screen (5), and in the closed state of the nozzle (4), the self-adapting sealing piece (8) blocks the filter screen (5).

5. The municipal greening construction device according to claim 4, characterized in that: The self-adapting sealing piece (8) comprises a positioning rod (801), a strip-shaped plate (802) and a sealing plate (803); the positioning rod (801) is fixedly arranged above the adjusting plate (601), and the nozzle (4) is provided with a rod hole for the positioning rod (801) to slide; the strip-shaped plate (802) is fixedly arranged at the top end of the positioning rod (801), and the sealing plate (803) is symmetrically fixedly arranged at the two ends of the strip-shaped plate (802).

6. The municipal greening construction device according to claim 5, characterized in that: The sealing plate (803) is in the shape of L, an open groove (804) is arranged on one side of the sealing plate (803) close to the adjusting plate (601), and an outer cleaning brush (805) is fixedly arranged in the open groove (804).

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