A spraying system for highway environmental protection construction
By designing a sliding lifting cylinder structure, the problem of dust adhesion to the atomizing nozzles when not in operation is solved, realizing automatic storage and cleaning of the atomizing nozzles, and improving the efficiency and dust reduction effect of the spray system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HEBEI TUYUAN CONSTR ENG CO LTD
- Filing Date
- 2025-10-31
- Publication Date
- 2026-08-04
AI Technical Summary
In existing technologies, atomizing nozzles are prone to dust accumulation when not in use, which affects their normal operation.
A sliding lifting cylinder structure was designed. When the atomizing nozzle is in operation, it slides out of the spray box to spray. When not in operation, it slides back into the spray box for storage. The buoyancy structure enables automatic lifting and lowering, reducing dust adhesion.
It effectively prevents dust from adhering to the atomizing nozzles when they are not in operation, keeps the nozzles clean, and improves the service life and dust reduction effect of the spray system.
Smart Images
Figure CN121338463B_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of highway construction technology, and specifically relates to a spraying system for environmentally friendly highway construction. Background Technology
[0002] During highway construction, barriers need to be erected on both sides of the highway to effectively isolate the construction area from the outside world and prevent pedestrians and vehicles from accidentally entering the construction area. During earthwork excavation and backfilling, soil particles are lifted up, forming dust. In order to reduce the spread of dust, the existing technology installs spray pipes on the barriers. The spray pipes are equipped with several atomizing nozzles, which continuously spray atomized water. When the atomized water comes into contact with dust particles, it can adsorb the dust, thereby increasing the mass of the dust and reducing its suspension ability in the air, thus accelerating the settling of particulate matter.
[0003] In existing technologies, the atomizing nozzles are fixed to the enclosure. When the atomizing nozzles are not in operation, dust easily adheres to their surface, thus affecting their normal use. Summary of the Invention
[0004] This application provides a spraying system for environmental protection construction of highways, which aims to solve the problem in the prior art that dust easily adheres to the surface of the atomizing nozzle when it is not in operation.
[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: A spraying system for environmentally friendly highway construction is provided, comprising: The enclosure body is connected to a main sprinkler pipe; one end of the main sprinkler pipe is connected to pressurized water, and the enclosure body is connected to several sprinkler structures, each of which includes: A sprinkler box is connected to the main body of the enclosure; the sprinkler box is connected to the main sprinkler pipe through a sprinkler branch pipe, and the height of the sprinkler box is higher than the height of the main sprinkler pipe. A lifting cylinder slides in conjunction with the spray box along its height direction; the outer peripheral wall of the lifting cylinder has several spray nozzles, each of which is connected to an atomizing nozzle; wherein, the inner end of the lifting cylinder is connected to a buoyancy structure, and the lifting cylinder has a working state of sliding out of the spray box and a storage state of sliding into the spray box; in the storage state, the top of the lifting cylinder is coplanar with the top of the spray box.
[0006] In one possible implementation, the buoyancy structure includes: The counterweight plate has its outer peripheral wall in contact with and sealed to the inner peripheral wall of the spray box; the counterweight plate is slidably fitted to the spray box; the counterweight plate has a through hole communicating with the lifting cylinder. An airbag is attached to the bottom of the counterweight plate; The counterweight plate divides the spray box into an upper chamber and a lower chamber, and the spray branch pipe is connected to the lower chamber; the top of the spray box has a vent hole that is connected to the upper chamber, and a filter component is provided at the vent hole position.
[0007] In one possible implementation, the lifting cylinder passes through the counterweight plate, and the lifting cylinder is connected to limit components at both the top and bottom of the counterweight plate to axially limit the lifting cylinder. The bottom of the lifting cylinder is connected to an impeller, and the spray branch pipe faces the impeller; the impeller can rotate under the action of water flow, so that the lifting cylinder can rotate around its axis.
[0008] In one possible implementation, the limiting component is a limiting sleeve, which is sleeved on the lifting cylinder and fixed in position to the lifting cylinder by a pin; wherein, the two limiting sleeves are in contact with the top and bottom ends of the counterweight plate, respectively.
[0009] In one possible implementation, a support column is connected to the top of the counterweight plate, and the height of the support column is greater than the height of the limiting component at the top of the counterweight plate. When the lifting cylinder slides out of the spray box, the top of the support column contacts the top of the spray box.
[0010] In one possible implementation, the spray box is provided with a limiting frame at the lower cavity; when the lifting cylinder slides into the spray box, the bottom of the counterweight plate contacts the top of the limiting frame.
[0011] In one possible implementation, the inside of the lifting cylinder is connected to a guide cylinder at the position of the spray nozzle, and the atomizing nozzle is disposed inside the guide cylinder; The atomizing nozzle is slidably engaged with the guide cylinder, and the atomizing nozzle can slide out of the spray port under the drive of pressurized water; the guide cylinder is provided with a reset component, and the atomizing nozzle can slide into the guide cylinder under the pulling force of the reset component.
[0012] In one possible implementation, the guide cylinder is provided with a groove arranged along the axis, and the reset component includes a spring and a slider, with one end of the spring fixed to one end of the groove and the other end of the spring fixed to the slider; The sliding groove has guide grooves on its opposite sidewalls, and the two ends of the slider are in contact with the two guide grooves respectively. The slider has a through hole, and the atomizing nozzle has a threaded hole on its outer peripheral wall. The threaded hole of the atomizing nozzle is aligned with the through hole of the slider and fixed by bolts.
[0013] In one possible implementation, a conical sleeve is connected to the top wall inside the spray box, and when the atomizing nozzle slides outward to its maximum position, the outer end of the atomizing nozzle is located within the area covered by the conical sleeve.
[0014] In one possible implementation, a limiting plate is connected to the top of the lifting cylinder, the diameter of which is larger than the diameter of the lifting cylinder; a slot is provided on the top of the spray box, the thickness of which is the same as the thickness of the limiting plate. When the limiting plate is inserted into the slot, the bottom of the limiting plate contacts the bottom wall of the slot, and the top of the limiting plate is coplanar with the top of the spray box.
[0015] This application provides a sprinkler system for highway environmental protection construction. Compared with the prior art, pressurized water flows through the main sprinkler pipe and enters the sprinkler box. The lifting cylinder slides upward through a buoyancy structure. When the lifting cylinder rises to its highest position, it is in working condition. At this time, pressurized water in the sprinkler box enters the lifting cylinder and is sprayed out from the atomizing nozzles in the sprinkler outlet. When the lifting cylinder is not in working condition, it slides downward into the sprinkler box. When the top of the lifting cylinder is coplanar with the top of the sprinkler box, the lifting cylinder is in its lowest position and is in a retracted state. Through the above configuration, when the atomizing nozzles are not working, they can be retracted into the sprinkler box, reducing dust adhering to the surface of the atomizing nozzles. Attached Figure Description
[0016] Figure 1 A schematic diagram of the spray box portion of a spray system for highway environmental protection construction provided in an embodiment of this application; Figure 2 A schematic diagram of a spray branch pipe portion of a spray system for highway environmental protection construction provided in an embodiment of this application; Figure 3 A cross-sectional view of the spray box portion of a spray system for highway environmental protection construction provided in an embodiment of this application; Figure 4 A schematic diagram showing the lifting cylinder of a sprinkler system for highway environmental protection construction raised to its highest position, provided as an embodiment of this application; Figure 5 A schematic diagram of the counterweight plate portion of a spray system for highway environmental protection construction provided in an embodiment of this application; Figure 6 A schematic diagram of the lifting cylinder and limiting component of a sprinkler system for highway environmental protection construction provided in an embodiment of this application; Figure 7 A cross-sectional view of the lifting cylinder portion of a sprinkler system for highway environmental protection construction, provided as an embodiment of this application; Figure 8for Figure 7 Enlarged diagram of section A in the middle; Figure 9 A schematic diagram of the guide cylinder portion of a spraying system for environmental protection construction of highways, provided as an embodiment of this application; Figure 10 for Figure 9 Enlarged diagram of section B in the middle; Figure 11 This is a cross-sectional view of the guide cylinder portion of a spray system for environmentally friendly highway construction, provided as an embodiment of this application.
[0017] Explanation of reference numerals in the attached drawings: 1. Spray box; 11. Upper chamber; 12. Lower chamber; 13. Vent hole; 14. Limiting frame; 15. Slot; 2. Lifting cylinder; 21. Spray nozzle; 22. Atomizing nozzle; 23. Impeller; 24. Limiting plate; 3. Spray branch pipe; 4. Counterweight plate; 41. Support column; 5. Limiting component; 6. Guide cylinder; 61. Slide groove; 62. Spring; 63. Slider; 64. Guide groove; 65. Limiting ring; 7. Conical sleeve. Detailed Implementation
[0018] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.
[0019] Please refer to the following: Figures 1 to 11 This application describes a sprinkler system for highway environmental protection construction. The sprinkler system includes a fencing body and sprinkler structures. The fencing body is connected to a main sprinkler pipe; one end of the main sprinkler pipe is connected to pressurized water. Several sprinkler structures are connected to the fencing body, each including a sprinkler box 1 and a lifting cylinder 2. The sprinkler box 1 is connected to the fencing body; the sprinkler box 1 is connected to the main sprinkler pipe via a sprinkler branch pipe 3, and the height of the sprinkler box 1 is higher than the height of the main sprinkler pipe. The lifting cylinder 2 slides along the height direction with the sprinkler box 1. The outer peripheral wall of the lifting cylinder 2 has several sprinkler nozzles 21, each sprinkler nozzle 21 connected to an atomizing nozzle 22. A buoyancy structure is connected to the inner end of the lifting cylinder 2, allowing the lifting cylinder 2 to slide out of the sprinkler box 1 and into the sprinkler box 1 in a retracted state. In the retracted state, the top of the lifting cylinder 2 is coplanar with the top of the sprinkler box 1.
[0020] This application provides a sprinkler system for highway environmental protection construction. Compared with the prior art, pressurized water flows through the main sprinkler pipe and enters the sprinkler box 1. The lifting cylinder 2 slides upward through a buoyancy structure. When the lifting cylinder 2 rises to its highest position, it is in working state. At this time, the pressurized water in the sprinkler box 1 enters the lifting cylinder 2 and is sprayed out from the atomizing nozzle 22 in the sprinkler outlet 21. When the lifting cylinder 2 is not in working state, it slides downward into the sprinkler box 1. When the top of the lifting cylinder 2 is coplanar with the top of the sprinkler box 1, the lifting cylinder 2 is in its lowest position and is in a retracted state. Through the above settings, when the atomizing nozzle 22 is not working, it can be retracted into the sprinkler box 1, reducing the dust adhering to the surface of the atomizing nozzle 22.
[0021] It should be noted that one end of the main spray pipe is connected to a water pump, which is located in a water tank. The water pump draws water from the tank into the main spray pipe and the spray box 1, thus facilitating the spraying of pressurized water from the atomizing nozzle 22. After the water pump stops working, since the height of the spray box 1 is higher than that of the main spray pipe, the water in the spray box 1 can flow back, causing the lifting cylinder 2 to slide into the spray box 1, ultimately protecting the atomizing nozzle 22.
[0022] By incorporating a sliding lifting cylinder 2, the atomizing nozzle 22 can slide out of the spray box 1 during operation for spraying. In the retracted state, the lifting cylinder 2 slides into the spray box 1, with its top flush with the top of the spray box 1. This prevents dust from directly adhering to the atomizing nozzle 22 when not in operation, reducing the impact of dust on its normal use. The lifting cylinder 2 operates automatically using a buoyancy structure, requiring no additional power.
[0023] In some embodiments, such as Figures 1 to 11 As shown, the buoyancy structure includes a counterweight plate 4 and an airbag (not shown in the figure); the outer peripheral wall of the counterweight plate 4 contacts the inner peripheral wall of the spray box 1 and is sealed; the counterweight plate 4 and the spray box 1 are slidably fitted; the counterweight plate 4 has a through hole communicating with the lifting cylinder 2; the airbag is fixedly connected to the bottom of the counterweight plate 4; wherein, the counterweight plate 4 divides the spray box 1 into an upper chamber 11 and a lower chamber 12, and the spray branch pipe 3 communicates with the lower chamber 12; the top of the spray box 1 has a vent hole 13 communicating with the upper chamber 11, and a filter component is provided at the vent hole 13, which plays a filtering role to reduce the dust entering the spray box 1; the filter component is existing technology and will not be described in detail here; the top of the counterweight plate 4 is connected to a support column 41, wherein, when the top of the lifting cylinder 2 slides upward into place, the top of the support column 41 contacts the top of the spray box 1.
[0024] The counterweight plate 4 is sealed to the spray box 1, thus dividing the spray box 1 into an upper chamber 11 and a lower chamber 12. By setting a vent hole 13 on the top wall of the spray box 1, the pressure in the upper chamber 11 can be kept the same as the atmospheric pressure. When pressurized water is first introduced into the lower chamber 12, the counterweight plate 4 can slide upward under the action of the pressurized water, and at the same time, the gas in the upper chamber 11 is discharged from the vent hole 13. After the water pump stops working, the counterweight plate 4 drives the lifting cylinder 2 to slide downward under the action of gravity, and the water in the spray box 1 can also flow out of the spray box 1, so it is easy to store the lifting cylinder 2 into the spray box 1.
[0025] It should be noted that after pressurized water is introduced into the spray box 1, the airbag and counterweight plate 4 can slide upwards; when the top of the support column 41 contacts the top wall inside the spray box 1, the counterweight plate 4 remains in that position, and after the pressurized water enters the lifting cylinder 2, it is sprayed out from the atomizing nozzle 22; during the up-and-down sliding of the counterweight plate 4, the sliding cooperation between the lifting cylinder 2 and the spray box 1 can guide the counterweight plate 4, and conversely, the counterweight plate 4 can also guide the sliding of the lifting cylinder 2; through the above settings, the lifting cylinder 2 can be kept stable during the lifting process.
[0026] In some embodiments, such as Figures 1 to 11 As shown, the lifting cylinder 2 passes through the counterweight plate 4. Limiting components 5 are connected to both the top and bottom of the lifting cylinder 2 on the counterweight plate 4 to axially limit its movement. An impeller 23 is connected to the bottom of the lifting cylinder 2, and the spray branch pipe 3 faces the impeller 23. The impeller 23 rotates under the action of water flow, causing the lifting cylinder 2 to rotate around its axis. The impeller 23 is fixed to the limiting component 5 at the bottom of the lifting cylinder 2. The height of the support column 41 is greater than the height of the limiting component 5 at the top of the counterweight plate 4. It should be noted that after the counterweight plate 4 is raised to the highest position, the counterweight plate 4 remains at the highest position; the impeller 23 can rotate around the axis under the action of water flow, thereby driving the lifting cylinder 2 to rotate, so that the atomizing nozzle 22 rotates and sprays, expanding the spray range and improving the dust suppression effect; through the above settings, the rotation of the lifting cylinder 2 is achieved by means of water flow power, without the need for an additional drive device.
[0027] There are two limiting components 5 on the lifting cylinder 2. The two limiting components 5 are located at the top and bottom of the counterweight plate 4, respectively. The two limiting components 5 contact the top and bottom of the counterweight plate 4 to limit the axial movement of the lifting cylinder 2 and reduce the axial displacement of the lifting cylinder 2 during the rotation process.
[0028] For example, the limiting component 5 is a limiting sleeve, which is sleeved on the lifting cylinder 2. The limiting sleeve and the lifting cylinder 2 are fixed in position by a pin. The two limiting sleeves are in contact with the top and bottom ends of the counterweight plate 4, respectively. The outer peripheral wall of the limiting sleeve has a threaded hole, and the outer peripheral wall of the lifting cylinder 2 has a threaded hole that is aligned with the limiting sleeve. When the threaded hole on the limiting sleeve and the threaded hole on the lifting cylinder 2 are aligned, the outer peripheral wall of the pin has an external thread. The pin is threadedly engaged with the limiting sleeve and the lifting cylinder 2, which can fix the limiting sleeve on the lifting cylinder 2.
[0029] In some embodiments, such as Figures 1 to 11 As shown, a limiting frame 14 is provided at the position of the lower cavity 12 of the spray box 1; when the lifting cylinder 2 slides into the spray box 1, the bottom of the counterweight plate 4 contacts the top of the limiting frame 14.
[0030] It should be noted that the limiting frame 14 is located at the lower cavity 12. When the counterweight plate 4 hits the limiting frame 14 during its descent, the counterweight plate 4 stops sliding downward. At this time, the counterweight plate 4 is at its lowest position and in a stable position. After the counterweight plate 4 contacts the limiting frame 14, there is a gap between the impeller 23 below the counterweight plate 4 and the bottom wall of the lower cavity 12. Therefore, the impeller 23 will not collide with the bottom wall of the lower cavity 12, thereby reducing the possibility of damage to the impeller 23.
[0031] In some embodiments, such as Figures 1 to 11 As shown, the inside of the lifting cylinder 2 is connected to the spray nozzle 21 and the guide cylinder 6 is connected to the spray nozzle 21. The atomizing nozzle 22 is set inside the guide cylinder 6. The atomizing nozzle 22 is slidably engaged with the guide cylinder 6. The atomizing nozzle 22 can slide out of the spray nozzle 21 under the drive of pressurized water. The guide cylinder 6 is provided with a reset component. The atomizing nozzle 22 can slide into the guide cylinder 6 under the pulling force of the reset component.
[0032] The guide cylinder 6 and the lifting cylinder 2 are fixed by bolts. Specifically, the guide cylinder 6 has a threaded hole, and the lifting cylinder 2 has a countersunk hole that is aligned with the threaded hole on the guide cylinder 6. When installing the guide cylinder 6, the threaded hole on the guide cylinder 6 is aligned with the countersunk hole on the lifting cylinder 2, and then the guide cylinder 6 is fixed to the lifting cylinder 2 by bolts.
[0033] By providing a guide cylinder 6 inside the lifting cylinder 2, space can be provided for the sliding of the atomizing nozzle 22. When there is no pressurized water inside the lifting cylinder 2, the atomizing nozzle 22 retracts into the spray port 21 under the action of the spring force of the reset component, which facilitates the sliding cooperation between the lifting cylinder 2 and the spray box 1. When the lifting cylinder 2 slides upward to the highest position and there is pressurized water inside the lifting cylinder 2, the atomizing nozzle 22 can slide outward under the action of the pressurized water, and the atomizing nozzle 22 can slide out of the lifting cylinder 2, thereby increasing the spray range of the atomizing nozzle 22.
[0034] In some embodiments, such as Figures 1 to 11As shown, the guide cylinder 6 has a sliding groove 61 arranged along the axis. The reset component includes a spring 62 and a slider 63. One end of the spring 62 is fixed to one end of the sliding groove 61, and the other end of the spring 62 is fixed to the slider 63. The sliding groove 61 has guide grooves 64 on opposite side walls, and the two ends of the slider 63 are in contact with the two guide grooves 64 respectively. The slider 63 has a through hole, and the outer peripheral wall of the atomizing nozzle 22 has a threaded hole. The threaded hole of the atomizing nozzle 22 is aligned with the through hole of the slider 63 and fixed by bolts.
[0035] It should be noted that in the initial state, there is no pressurized water inside the lifting cylinder 2, and the slider 63 is pressed against one end of the slide groove 61 by the elastic force of the spring 62. At this time, the atomizing nozzle 22 is located inside the lifting cylinder 2. When pressurized water is present inside the lifting cylinder 2, the pressurized water will push the spray end of the atomizing nozzle 22 out of the lifting cylinder 2, and the spring 62 will be compressed. When the spring 62 is compressed to its limit position, the atomizing nozzle 22 maintains this state. In the initial state, the spring 62 always provides a pressing force to the slider 63.
[0036] By setting guide grooves 64 on opposite sides of the slide groove 61, and having both ends of the slider 63 contact the bottom walls of the two guide grooves 64 respectively, the slider 63 can be limited, reducing the possibility of the slider 63 rotating. The threaded hole on the outer peripheral wall of the atomizing nozzle 22 is located near the free end of the guide cylinder 6. After the bolt passes through the slider 63 and engages with the threaded part of the atomizing nozzle 22, the atomizing nozzle 22 and the slider 63 can be fixed together, further limiting the slider 63 and ensuring the stability of the slider 63 during sliding.
[0037] A limiting ring 65 is fixedly provided at the free end of the guide cylinder 6. The limiting ring 65 contacts the inner end of the atomizing nozzle 22 to reduce the possibility of the atomizing nozzle 22 sliding from the guide cylinder 6 into the lifting cylinder 2. The sliding groove 61 on the guide cylinder 6 is arranged along the axial direction of the guide cylinder 6 and communicates with the outer side of the guide cylinder 6. When the inner end of the atomizing nozzle 22 contacts the limiting ring 65, the outer peripheral wall of the atomizing nozzle 22 contacts the inner peripheral wall of the guide cylinder 6 and is sealed. The sliding groove 61 is located on the straight section of the atomizing nozzle 22, which can reduce the pressure water sprayed from the sliding groove 61 to the spray nozzle 21.
[0038] In some embodiments, such as Figures 1 to 11 As shown, a conical sleeve 7 is connected to the top wall inside the spray box 1. When the atomizing nozzle 22 slides outward to its maximum position, the outer end of the atomizing nozzle 22 is located within the area covered by the conical sleeve 7.
[0039] It should be noted that when the atomizing nozzle 22 is pushed out of the lifting cylinder 2 by the pressurized water at the upper cavity 11, the lifting cylinder 2 cannot slide upward out of the spray box 1. Therefore, a conical sleeve 7 is provided in the spray box 1. During the process of the atomizing nozzle 22 sliding upward with the lifting cylinder 2, the conical sleeve 7 can guide the pushed-out atomizing nozzle 22, so that the atomizing nozzle 22 retracts into the spray port 21, thereby facilitating the lifting cylinder 2 to slide upward into place.
[0040] In some embodiments, such as Figures 1 to 11 As shown, the top of the lifting cylinder 2 is connected to a limiting plate 24, the diameter of which is larger than that of the lifting cylinder 2; the top of the spray box 1 is provided with a slot 15, the thickness of which is the same as that of the limiting plate 24; when the limiting plate 24 and the slot 15 are inserted and engaged, the bottom of the limiting plate 24 contacts the bottom wall of the slot 15, and the top of the limiting plate 24 is coplanar with the top of the spray box 1.
[0041] It should be noted that by fixing the limiting plate 24 to the top of the lifting cylinder 2 and setting the slot 15 on the top of the spray box 1, when the lifting cylinder 2 slides down into the spray box 1, the limiting plate 24 and the slot 15 are engaged and cooperated, which can play a limiting role and at the same time play a sealing role to reduce the dust entering the spray box 1, thereby reducing the dust adhering to the atomizing nozzle 22.
[0042] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A spraying system for highway environmental protection construction, characterized in that, include: The enclosure itself is connected to a main sprinkler pipe; One end of the main sprinkler pipe is connected to pressurized water, and several sprinkler structures are connected to the enclosure body. Each sprinkler structure includes: A sprinkler box is connected to the main body of the enclosure; the sprinkler box is connected to the main sprinkler pipe through a sprinkler branch pipe, and the height of the sprinkler box is higher than the height of the main sprinkler pipe. A lifting cylinder slides in conjunction with the spray box along its height direction; the outer peripheral wall of the lifting cylinder has several spray nozzles, each of which is connected to an atomizing nozzle; wherein, the inner end of the lifting cylinder is connected to a buoyancy structure, and the lifting cylinder has a working state of sliding out of the spray box and a storage state of sliding into the spray box; in the storage state, the top of the lifting cylinder is coplanar with the top of the spray box; The lifting cylinder is connected to a guide cylinder at the position of the spray nozzle, and the atomizing nozzle is disposed inside the guide cylinder; The atomizing nozzle is slidably engaged with the guide cylinder, and the atomizing nozzle can slide out of the spray port under the drive of pressurized water; the guide cylinder is provided with a reset component, and the atomizing nozzle can slide into the guide cylinder under the pulling force of the reset component; The bottom of the lifting cylinder is connected to an impeller, and the spray branch pipe faces the impeller; the impeller can rotate under the action of water flow, so that the lifting cylinder can rotate around its axis. The top wall inside the spray box is connected to a conical sleeve. When the atomizing nozzle slides outward to its maximum position, the outer end of the atomizing nozzle is located within the area covered by the conical sleeve.
2. The spraying system for highway environmental protection construction of claim 1, wherein, The buoyancy structure includes: The counterweight plate has its outer peripheral wall in contact with and sealed to the inner peripheral wall of the spray box; the counterweight plate is slidably fitted to the spray box; the counterweight plate has a through hole communicating with the lifting cylinder. An airbag is attached to the bottom of the counterweight plate; The counterweight plate divides the spray box into an upper chamber and a lower chamber, and the spray branch pipe is connected to the lower chamber; the top of the spray box has a vent hole that is connected to the upper chamber, and a filter component is provided at the vent hole position.
3. A spraying system for environmentally friendly highway construction as described in claim 2, characterized in that, The lifting cylinder passes through the counterweight plate, and the lifting cylinder is connected to limit components at both the top and bottom of the counterweight plate to axially limit the lifting cylinder.
4. A spraying system for environmentally friendly highway construction as described in claim 3, characterized in that, The limiting component is a limiting sleeve, which is sleeved on the lifting cylinder and fixed in position to the lifting cylinder by a pin; wherein, the two limiting sleeves are in contact with the top and bottom ends of the counterweight plate, respectively.
5. A spraying system for environmentally friendly highway construction as described in claim 3, characterized in that, The top of the counterweight plate is connected to a support column, and the height of the support column is greater than the height of the limiting component at the top of the counterweight plate. When the lifting cylinder slides out of the spray box, the top of the support column contacts the top of the spray box.
6. A spraying system for environmentally friendly highway construction as described in claim 5, characterized in that, The spray box has a limiting frame at the lower cavity; when the lifting cylinder slides into the spray box, the bottom of the counterweight plate contacts the top of the limiting frame.
7. A spraying system for environmental protection construction of highways as described in claim 1, characterized in that, The guide cylinder is provided with a sliding groove arranged along the axis. The reset component includes a spring and a slider. One end of the spring is fixed to one end of the sliding groove, and the other end of the spring is fixed to the slider. The sliding groove has guide grooves on its opposite sidewalls, and the two ends of the slider are in contact with the two guide grooves respectively. The slider has a through hole, and the atomizing nozzle has a threaded hole on its outer peripheral wall. The threaded hole of the atomizing nozzle is aligned with the through hole of the slider and fixed by bolts.
8. A spraying system for environmental protection construction of highways as described in claim 1, characterized in that, The top of the lifting cylinder is connected to a limiting plate, the diameter of which is larger than the diameter of the lifting cylinder; the top of the spray box is provided with a slot, the thickness of which is the same as the thickness of the limiting plate. When the limiting plate is inserted into the slot, the bottom of the limiting plate contacts the bottom wall of the slot, and the top of the limiting plate is coplanar with the top of the spray box.