CN113599935A - Environment-friendly municipal engineering construction dust settling method and equipment - Google Patents

Environment-friendly municipal engineering construction dust settling method and equipment Download PDF

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Publication number
CN113599935A
CN113599935A CN202110891198.7A CN202110891198A CN113599935A CN 113599935 A CN113599935 A CN 113599935A CN 202110891198 A CN202110891198 A CN 202110891198A CN 113599935 A CN113599935 A CN 113599935A
Authority
CN
China
Prior art keywords
gun barrel
fog gun
arc
environment
adjusted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110891198.7A
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Chinese (zh)
Inventor
徐文武
左丛存
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Hongyu Road And Bridge Engineering Co ltd
Original Assignee
Anhui Hongyu Road And Bridge Engineering Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anhui Hongyu Road And Bridge Engineering Co ltd filed Critical Anhui Hongyu Road And Bridge Engineering Co ltd
Priority to CN202110891198.7A priority Critical patent/CN113599935A/en
Publication of CN113599935A publication Critical patent/CN113599935A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D47/00Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/06Spray cleaning
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/16Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/68Arrangements for adjusting the position of spray heads
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01HSTREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H3/00Applying liquids to roads or like surfaces, e.g. for dust control; Stationary flushing devices
    • E01H3/02Mobile apparatus, e.g. watering-vehicles

Abstract

The invention provides an environment-friendly municipal engineering construction dust-settling method and equipment, which comprise a frame body and a handle, wherein the handle is arranged on one side of the frame body, a lifting assembly is arranged in the frame body, the top of the lifting assembly is provided with a workbench, the frame body is movably connected to the workbench through a second hydraulic push rod, the top of the workbench is movably connected with a turntable, and the turntable is movably connected to a fog gun barrel through two groups of supporting rods. According to the invention, the lifting assembly can indirectly drive the fog gun barrel to adjust the height, the first hydraulic push rod can drive the fog gun barrel to adjust the angle along an original point, the rotary disc is arranged to drive the fog gun barrel to adjust the angle in all directions, the device can be adjusted more flexibly by adopting the arrangement, the additional spray nozzle is also arranged to adjust the opening and closing in the spray nozzle, and the spraying range of the atomizing spray nozzle is further adjusted, so that the device is flexible and changeable.

Description

Environment-friendly municipal engineering construction dust settling method and equipment
Technical Field
The invention relates to the field of municipal engineering dust fall, in particular to an environment-friendly municipal engineering construction dust fall method and device.
Background
At present to municipal works construction generally adopt fog gun car to remove dust and road surface cleaning effect to the road, the water-spraying system of fog gun car has certain treatment effect to the raise dust, reduces the large granule content in the air, and is limited to the tiny particle effect. The water smoke granule that fog gun car sprayed is very tiny, reaches the micron level, can carry out the liquid fog dust fall, decompose granule concentration in the desalination air, can effectively decompose pollution particulate matter, dust etc. in the air at haze weather, effectively alleviate the haze.
However, the existing fog gun dust settling equipment has some defects when in use, for example, the spraying position of the outlet of the existing fog gun dust settling equipment is generally integrally arranged, the spraying range is limited, although the angle and the like can be adjusted, the spraying range is limited, and the spraying range cannot be correspondingly adjusted according to the needs of users.
Disclosure of Invention
The invention aims to provide an environment-friendly municipal engineering construction dust settling method and equipment to solve the technical problem.
In order to solve the technical problems, the invention adopts the following technical scheme: an environment-friendly municipal engineering construction dust fall method and equipment comprise a frame body and a handle, wherein the handle is arranged on one side of the frame body, a lifting assembly is arranged inside the frame body, a workbench is arranged at the top of the lifting assembly, the frame body is movably connected to the workbench through a second hydraulic push rod, a turntable is movably connected to the top of the workbench, and the turntable is movably connected to a fog gun barrel through two groups of supporting rods; be equipped with first hydraulic push rod on the branch, and first hydraulic push rod's top swing joint is to fog gun barrel, the front end of fog gun barrel is equipped with installs shower nozzle and drive assembly additional, and drive assembly can drive installs the shower nozzle additional and rotate, and the tail end of fog gun barrel is equipped with the heating panel.
Preferably, a water storage tank is arranged on one side of the frame body, a water pump is arranged on the water storage tank, and the water pump is connected to the atomizing nozzle on the inner side of the front end of the fog gun barrel through an elastic hose. And water in the water storage tank is injected into the atomizing nozzle on the fog gun barrel through the water pump.
Preferably, the driving assembly comprises a driving wheel, an outer gear ring and a motor, wherein the outer gear ring is arranged on the outer side of the front end of the fog gun barrel, the outer side of the outer gear ring is connected with the driving wheel in a meshed mode, and the driving wheel is driven by the motor. The motor can drive the driving wheel to rotate, and the driving wheel rotates to drive the outer gear ring to rotate, so that the additional nozzle is driven to rotate.
Preferably, install the shower nozzle additional and include conical shell, first arc and second arc, conical shell establishes in one side of outer gear ring and the front end outside of fog gun barrel, and wherein both sides swing joint respectively has first arc and second arc about conical shell's inside, the outside of first arc and second arc all is through hydraulic telescoping rod swing joint to on the conical shell inner wall. The front end through at the fog gun barrel sets up installs the shower nozzle additional, install the shower nozzle additional and can carry out the adjustment of size to the export of fog gun barrel, and then adjust the spray range of fog, drive first arc and second arc through first hydraulic telescoping rod promptly and adjust, thereby adjust the interval between first arc and the second arc, and then adjust the export size of installing the shower nozzle additional, further adjust the spray range of fog, this process can carry out corresponding regulation according to user's needs.
Preferably, the first arc-shaped plate and the second arc-shaped plate can form a tapered structure, and the front ends of the first arc-shaped plate and the second arc-shaped plate are provided with outlets.
Preferably, the method specifically comprises the following steps:
s1, installation processing: firstly, the device is placed on a sprinkler and fixed at a required position;
s2, pre-treatment for dust fall: then, water to be sprayed is injected into the water storage tank, the fog gun barrel is communicated with the water storage tank through the elastic hose, and the device is checked before use to ensure that the device can safely operate;
s3, dust fall processing: the device is driven to move on the road surface by the sprinkler, and works in the moving process, so that water can be sprayed into the air, and the dust falling effect is realized; in the process, the lifting assembly is driven to ascend or descend by the second hydraulic push rod, so that the height of the fog gun barrel is adjusted; meanwhile, the fog gun barrel can be driven to incline in angle through the first hydraulic push rod, so that the up-down angle of the fog gun barrel can be adjusted; due to the arrangement of the rotary disc, the angle of the fog gun barrel can be adjusted in all directions, the fog gun barrel can be flexibly adjusted according to the needs of a user, and the spraying position can be adjusted;
s4, dust fall treatment: in the using process, the spraying range of the fog gun barrel can be adjusted by additionally arranging the spray head;
s5, collection and release processing: after finishing using, through inside second hydraulic push rod shrinks the whole framework that reach of lifting unit, save occupation time, then adjust the position of fog gun barrel through first hydraulic push rod, take off this device from the watering lorry at last to it can to place required position department.
Preferably, the specific steps of the additional nozzle during use are as follows:
s11, when a user needs to adjust the spraying range of the fog gun barrel, the angle of the first arc-shaped plate and the angle of the second arc-shaped plate can be adjusted by driving the first arc-shaped plate and the second arc-shaped plate through the two hydraulic telescopic rods;
s12, when two arcs inwards rotate simultaneously, alright reduce the spraying scope this moment, outwards rotate simultaneously when two arcs, alright enlarge the spraying scope this moment, adjust according to the user' S needs.
Compared with the prior art, the municipal engineering construction dust settling method and the equipment provided by the invention have the following beneficial effects:
the invention provides an environment-friendly municipal engineering construction dust fall method and equipment, and the method and equipment are characterized in that firstly, a lifting assembly is arranged to indirectly drive a fog gun barrel to adjust the height, a first hydraulic push rod is arranged to drive the fog gun barrel to adjust the angle of the fog gun barrel along an original point, and a turntable is arranged to drive the fog gun barrel to adjust the angle in all directions.
Drawings
FIG. 1 is a schematic structural diagram of an environment-friendly municipal engineering construction dust settling device of the invention;
FIG. 2 is a schematic view of the external structure of the present invention with additional showerhead;
FIG. 3 is a schematic view of the internal structure of the present invention with additional showerhead;
FIG. 4 is a schematic view of a first arcuate plate and a first arcuate plate of the present invention;
reference numerals: 1. a water storage tank; 2. a frame body; 3. a work table; 4. a handle; 5. a turntable; 6. a first hydraulic push rod; 7. a strut; 8. a heat dissipation plate; 9. a fog gun barrel; 10. an elastic hose; 11. additionally installing a spray head; 111. a hydraulic telescopic rod; 112. a first arc-shaped plate; 113. a second arc-shaped plate; 114. a conical housing; 115. an outlet; 12. a drive assembly; 121. a drive wheel; 122. an outer gear ring; 123. a motor; 13. a second hydraulic push rod; 14. a lifting assembly.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easily understood, the invention is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.
Specific embodiments of the present invention are described below with reference to the accompanying drawings.
In the specific implementation process, as shown in fig. 1, the environment-friendly municipal engineering construction dust settling equipment comprises a frame body 2 and a handle 4, wherein the handle 4 is arranged on one side of the frame body 2; when a user uses the fog gun device, the frame body 2 can be pushed by the handle 4, the lifting assembly 14 is arranged inside the frame body 2, the top of the lifting assembly 14 is provided with the workbench 3, the lifting assembly 14 can be lifted to further drive the workbench 3 to lift, the frame body 2 is movably connected to the workbench 3 through the second hydraulic push rod 13, the lifting assembly 14 can be driven to lift or descend through the second hydraulic push rod 13, the top of the workbench 3 is movably connected with the turntable 5, the turntable 5 is movably connected to the fog gun barrel 9 through the two groups of support rods 7, so that the fog gun barrel 9 can rotate through the acting force of the turntable 5, and the angle of the fog gun barrel 9 can be adjusted; be equipped with first hydraulic push rod 6 on branch 7, and on first hydraulic push rod 6's top swing joint fog gun barrel 9, can pull fog gun barrel 9 through first hydraulic push rod 6 to adjust the angle of fog gun barrel 9, the front end of fog gun barrel 9 is equipped with installs shower nozzle 11 additional and drive assembly 12, and drive assembly 12 can drive installs shower nozzle 11 additional and rotate, and the tail end of fog gun barrel 9 is equipped with heating panel 8.
In the specific implementation process, as shown in fig. 1, a water storage tank 1 is arranged on one side of a frame body 2, a water pump is arranged on the water storage tank 1, and the water pump is connected to an atomizing nozzle on the inner side of the front end of a fog gun barrel 9 through an elastic hose 10. The water in the water storage tank 1 is injected into the atomizing nozzle on the fog gun barrel 9 through the water pump.
In the specific implementation process, as shown in fig. 2 and 3, the driving assembly 12 includes a driving wheel 121, an external gear ring 122 and a motor 123, wherein the external gear ring 122 is disposed outside the front end of the fog gun barrel 9, the driving wheel 121 is engaged with the outside of the external gear ring 122, and the driving wheel 121 is driven by the motor 123. Can drive wheel 121 through motor 123 and rotate, drive wheel 121 rotates, can drive external gear ring 122 and rotate to the drive is installed shower nozzle 11 additional and is rotated.
In a specific implementation process, as shown in fig. 3 and 4, the additional nozzle 11 includes a conical housing 114, a first arc-shaped plate 112 and a second arc-shaped plate 113, the conical housing 114 is disposed on one side of the outer gear ring 122 and outside the front end of the fog gun barrel 9, wherein the upper side and the lower side of the interior of the conical housing 114 are movably connected with the first arc-shaped plate 112 and the second arc-shaped plate 113 respectively, and the outer sides of the first arc-shaped plate 112 and the second arc-shaped plate 113 are movably connected to the inner wall of the conical housing 114 through the hydraulic telescopic rod 111. The first arc-shaped plate 112 and the second arc-shaped plate 113 may be formed in a tapered structure, and the front ends of the first arc-shaped plate 112 and the second arc-shaped plate 113 are provided with outlets 115. Through the front end setting at fog gun barrel 9 installs shower nozzle 11 additional, install shower nozzle 11 additional and carry out the adjustment of size to the export of fog gun barrel 9, and then adjust the spray range of fog, drive first arc 112 and second arc 113 through first hydraulic telescoping rod 111 promptly and adjust, thereby adjust the interval between first arc 112 and the second arc 113, and then adjust the export size of installing shower nozzle 11 additional, further adjust the spray range of fog, this process can carry out corresponding regulation according to user's needs.
The invention relates to an environment-friendly municipal engineering construction dust settling device, which is implemented according to the following principle: when in use, the device is firstly placed on a watering cart and fixed at a required position; then, water to be sprayed is injected into the water storage tank 1, the fog gun barrel 9 is communicated with the water storage tank 1 through the elastic hose 10, and the device is checked before use to ensure that the device can safely operate; the device is driven to move on the road surface by the sprinkler, and works in the moving process, so that water can be sprayed into the air, and the dust falling effect is realized; in the process, the lifting assembly 14 can be driven to ascend or descend by the second hydraulic push rod 13, so that the height of the fog gun barrel 9 can be adjusted; meanwhile, the fog gun barrel 9 can be driven to incline in angle through the first hydraulic push rod 6, so that the up-down angle of the fog gun barrel 9 can be adjusted; due to the arrangement of the rotary disc 5, the angle of the fog gun barrel body 9 can be adjusted in all directions, the fog gun barrel body 9 can be flexibly adjusted according to the needs of a user, and the spraying position can be adjusted; in the using process, the spraying range of the fog gun barrel body 9 can be adjusted by additionally arranging the spray head 11; after using, through second hydraulic push rod 13 with inside 14 all shrink frame 2, save occupation time, then adjust the position of fog gun barrel 9 through first hydraulic push rod 6, take off this device from the watering lorry at last to it can to place required position department.
The specific steps when the spray head 11 is additionally arranged for use are as follows: when a user needs to adjust the spraying range of the fog gun barrel 9, the angle of the first arc-shaped plate 112 and the angle of the second arc-shaped plate 113 can be adjusted by driving the two hydraulic telescopic rods 111; rotate inwards simultaneously when two arcs, alright reduce the spraying scope this moment, rotate outwards simultaneously when two arcs, alright enlarge the spraying scope this moment, adjust according to user's needs.
Compared with the prior art, the municipal engineering construction dust settling method and the equipment provided by the invention have the following beneficial effects:
the invention provides an environment-friendly municipal engineering construction dust fall method and equipment, and the method and equipment provided by the invention have the advantages that firstly, a lifting assembly 14 is arranged to indirectly drive a fog gun barrel 9 to adjust the height, a first hydraulic push rod 6 is arranged to drive the fog gun barrel 9 to adjust the angle of the fog gun barrel 9 along an original point, and a turntable 5 is arranged to drive the fog gun barrel 9 to adjust the angle in all directions.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides an environment-friendly municipal works construction dust fall equipment, includes framework (2) and handle (4), and wherein one side at framework (2), its characterized in that are established in handle (4): a lifting assembly (14) is arranged in the frame body (2), the top of the lifting assembly (14) is provided with a workbench (3), the frame body (2) is movably connected to the workbench (3) through a second hydraulic push rod (13), the top of the workbench (3) is movably connected with a turntable (5), and the turntable (5) is movably connected to the fog gun barrel body (9) through two groups of supporting rods (7);
be equipped with first hydraulic rod (6) on branch (7), and the top swing joint of first hydraulic rod (6) is on fog gun barrel (9), the front end of fog gun barrel (9) is equipped with installs shower nozzle (11) and drive assembly (12) additional, and drive assembly (12) can drive to install shower nozzle (11) additional and rotate, and the tail end of fog gun barrel (9) is equipped with heating panel (8).
2. The environment-friendly municipal engineering construction dust fall equipment of claim 1, characterized in that: one side of the frame body (2) is provided with a water storage tank (1), the water storage tank (1) is provided with a water pump, and the water pump is connected to an atomizing nozzle on the inner side of the front end of the fog gun barrel body (9) through an elastic hose (10).
3. The environment-friendly municipal engineering construction dust fall equipment of claim 1, characterized in that: the driving assembly (12) comprises a driving wheel (121), an outer gear ring (122) and a motor (123), wherein the outer gear ring (122) is arranged on the outer side of the front end of the fog gun cylinder body (9), the driving wheel (121) is connected to the outer side of the outer gear ring (122) in a meshed mode, and the driving wheel (121) is driven through the motor (123).
4. The environment-friendly municipal engineering construction dust fall equipment of claim 3, characterized in that: install shower nozzle (11) additional and include conical shell (114), first arc (112) and second arc (113), conical shell (114) are established in the front end outside of one side of outer gear ring (122) and fog gun barrel (9), and wherein both sides swing joint has first arc (112) and second arc (113) respectively about the inside of conical shell (114), the outside of first arc (112) and second arc (113) all is through hydraulic telescoping rod (111) swing joint to conical shell (114) inner wall.
5. The environment-friendly municipal engineering construction dust fall equipment of claim 4, characterized in that: the first arc-shaped plate (112) and the second arc-shaped plate (113) can form a conical structure, and the front ends of the first arc-shaped plate (112) and the second arc-shaped plate (113) are provided with outlets (115).
6. The environment-friendly municipal engineering construction dust settling method according to claim 5, is characterized by comprising the following steps:
s1, installation processing: firstly, the device is placed on a sprinkler and fixed at a required position;
s2, pre-treatment for dust fall: then, injecting water to be sprayed into the water storage tank (1), communicating the fog gun barrel body (9) with the water storage tank (1) by using an elastic hose (10), and checking the device before use to ensure that the device can safely operate;
s3, dust fall processing: the device is driven to move on the road surface by the sprinkler, and works in the moving process, so that water can be sprayed into the air, and the dust falling effect is realized; in the process, the lifting assembly (14) can be driven to ascend or descend by the second hydraulic push rod (13), so that the height of the fog gun barrel body (9) can be adjusted; meanwhile, the fog gun barrel (9) can be driven to incline in angle through the first hydraulic push rod (6), so that the up-down angle of the fog gun barrel (9) can be adjusted; due to the arrangement of the rotary disc (5), the angle of the fog gun barrel body (9) can be adjusted in all directions, the fog gun barrel body (9) can be flexibly adjusted according to the needs of users, and the spraying position can be adjusted;
s4, dust fall treatment: in the using process, the spraying range of the fog gun barrel body (9) can be adjusted by additionally arranging the spray head (11);
s5, collection and release processing: after using, through inside second hydraulic push rod (13) with lifting unit (14) all shrink framework (2), save occupation time, then adjust the position of fog gun barrel (9) through first hydraulic push rod (6), take off this device from the watering lorry at last to it can to place required position department.
7. The environment-friendly municipal engineering construction dust settling method according to claim 6, wherein: the specific steps of the additionally-installed spray head (11) during use are as follows:
s11, when a user needs to adjust the spraying range of the fog gun barrel (9), the angle of the first arc-shaped plate (112) and the angle of the second arc-shaped plate (113) can be adjusted by driving the two hydraulic telescopic rods (111);
s12, when two arcs inwards rotate simultaneously, alright reduce the spraying scope this moment, outwards rotate simultaneously when two arcs, alright enlarge the spraying scope this moment, adjust according to the user' S needs.
CN202110891198.7A 2021-08-04 2021-08-04 Environment-friendly municipal engineering construction dust settling method and equipment Pending CN113599935A (en)

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Application Number Priority Date Filing Date Title
CN202110891198.7A CN113599935A (en) 2021-08-04 2021-08-04 Environment-friendly municipal engineering construction dust settling method and equipment

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Application Number Priority Date Filing Date Title
CN202110891198.7A CN113599935A (en) 2021-08-04 2021-08-04 Environment-friendly municipal engineering construction dust settling method and equipment

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Publication Number Publication Date
CN113599935A true CN113599935A (en) 2021-11-05

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Application Number Title Priority Date Filing Date
CN202110891198.7A Pending CN113599935A (en) 2021-08-04 2021-08-04 Environment-friendly municipal engineering construction dust settling method and equipment

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116516878A (en) * 2023-04-20 2023-08-01 宁夏环保集团城市服务有限公司 360-degree steering sanitation dust removal gun carriage
CN117482674A (en) * 2024-01-02 2024-02-02 国昌德工(陕西)建筑工程有限公司 Construction dust fall equipment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN209423216U (en) * 2018-12-10 2019-09-24 杨天华 A kind of architectural engineering spraying and dust preventing device
KR20200092695A (en) * 2019-01-25 2020-08-04 정재홍 Airless painting equipment
CN112568099A (en) * 2020-12-10 2021-03-30 杨艳 Green, energy-saving and environment-friendly irrigation equipment for landscape
CN213253610U (en) * 2020-09-08 2021-05-25 范静 A far spray dust device for coal washery

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN209423216U (en) * 2018-12-10 2019-09-24 杨天华 A kind of architectural engineering spraying and dust preventing device
KR20200092695A (en) * 2019-01-25 2020-08-04 정재홍 Airless painting equipment
CN213253610U (en) * 2020-09-08 2021-05-25 范静 A far spray dust device for coal washery
CN112568099A (en) * 2020-12-10 2021-03-30 杨艳 Green, energy-saving and environment-friendly irrigation equipment for landscape

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116516878A (en) * 2023-04-20 2023-08-01 宁夏环保集团城市服务有限公司 360-degree steering sanitation dust removal gun carriage
CN116516878B (en) * 2023-04-20 2023-12-22 宁夏环保集团城市服务有限公司 360-degree steering sanitation dust removal gun carriage
CN117482674A (en) * 2024-01-02 2024-02-02 国昌德工(陕西)建筑工程有限公司 Construction dust fall equipment

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Application publication date: 20211105