CN112156587A - Intelligent atomization that building site used sprays dust fall equipment - Google Patents
Intelligent atomization that building site used sprays dust fall equipment Download PDFInfo
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- CN112156587A CN112156587A CN202010913524.5A CN202010913524A CN112156587A CN 112156587 A CN112156587 A CN 112156587A CN 202010913524 A CN202010913524 A CN 202010913524A CN 112156587 A CN112156587 A CN 112156587A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
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Abstract
The invention discloses intelligent atomization spraying dust-settling equipment for a construction site, which has the technical scheme that: the bottom plate comprises a base plate, fixed mounting has the deflector of two mutual symmetries, two on the upper surface of bottom plate all be equipped with first guide way, two on the upper surface of deflector install the first moving mechanism of horizontally in the first guide way, the top fixed mounting of first moving mechanism has the first mounting panel of two mutual symmetries, two all be equipped with the first mounting groove of two symmetries on the side of first mounting panel, install vertical second moving mechanism in the first mounting groove, install the second mounting panel on the second moving mechanism, be equipped with the second mounting groove on the lower surface of second mounting panel, the controller that is equipped with, the intelligent control of the equipment of being convenient for, the infrared ray sensor who is equipped with is convenient for respond to going of vehicle, is convenient for start this equipment and sprays the dust fall, reduces and causes the influence to the health.
Description
Technical Field
The invention relates to the technical field of building construction dust suppression equipment, in particular to intelligent atomization spraying dust suppression equipment for a building site.
Background
Building site is in the construction, because the temperature is higher, can lead to a large amount of dusts to fly upward when the vehicle goes, influences the quality of air, brings adverse effect to constructor's healthy simultaneously, still can lead to peripheral resident's life to cause inconveniently, generally can carry out the dust fall through the mode that sprays the dust fall on building site.
The most application range of current dust device is less, uses inconveniently, and unable adjusting device's height can't carry out the dust fall to some higher vehicles, and manual control is carried out through the manual work mostly to current dust device, can cause the influence to healthy.
Disclosure of Invention
The invention aims to provide intelligent atomization spraying dust-settling equipment for a construction site, and aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an intelligent atomization spraying dust-settling device for a construction site comprises a bottom plate, wherein two guide plates which are symmetrical to each other are fixedly mounted on the upper surface of the bottom plate, first guide grooves are formed in the upper surfaces of the two guide plates, a horizontal first moving mechanism is mounted in the two first guide grooves, two first mounting plates which are symmetrical to each other are fixedly mounted above the first moving mechanism, two first mounting grooves which are symmetrical to each other are formed in the side surfaces of the two first mounting plates, a vertical second moving mechanism is mounted in the first mounting grooves, a second mounting plate is mounted on the second moving mechanism, a second mounting groove is formed in the lower surface of the second mounting plate, a horizontal third moving mechanism is mounted in the second mounting groove, a first water pump is fixedly mounted below the third moving mechanism, and a water outlet of the first water pump is connected with a mounting water pipe, the utility model discloses a water pump, including installation water pipe, bottom plate, first water tank, first water delivery mechanism, second water delivery mechanism, first water pump, fixed mounting has a plurality of first shower nozzles on the installation water pipe, one side fixed mounting of bottom plate has places the board, fixed mounting has first water tank on the upper surface of placing the board, the top fixed mounting of first water tank has water delivery mechanism, water delivery mechanism's one end is connected with the second water tank, the second water tank pass through the flexible water pipe of second with first water pump is connected, fixed mounting has the controller on the side surface of first water tank, fixed mounting has infrared ray sensor on the side surface.
Preferably, the first moving mechanism includes a first lead screw, a first guide rod, a first servo motor and two first moving sliders, the first lead screw is rotatably installed in one of the first guide grooves through a bearing, the first guide rod is fixedly installed in the other first guide groove, the first moving slider is in threaded connection with the first lead screw, the other first moving slider is in sliding connection with the first guide rod, the first lead screw is in transmission connection with the first servo motor through a gear, and the first servo motor is installed on the side surface of the guide plate.
Preferably, the second moving mechanism comprises a second lead screw, a second guide rod, a second servo motor and two second moving sliding blocks, the second lead screw is rotatably installed in one of the second installation grooves through a bearing, the second guide rod is fixed in the other second installation groove, one of the second moving sliding blocks is in threaded connection with the second lead screw, the other second moving sliding block is in sliding connection with the second guide rod, the second lead screw is connected with the second servo motor through gear transmission, the second servo motor is fixedly installed on the first installation plate, and the second installation plate is fixedly installed between the two second moving sliding blocks.
Preferably, be equipped with two second guide ways of symmetry on the upper surface of first mounting panel, the equal fixed mounting in both ends of second mounting panel has the guide block of two symmetries, the guide block with second guide way slidable mounting.
Preferably, the third moving mechanism comprises a third lead screw, a third guide rod, a third servo motor and a third moving sliding block, the third lead screw is rotatably installed in the second installation groove through a bearing, the third guide rod is fixedly installed in the second installation groove, the third moving sliding block is in threaded connection with the third lead screw and is in sliding connection with the third guide rod, the third servo motor is connected with the third lead screw through gear transmission, and the third servo motor is fixedly installed on the upper surface of the second installation plate.
Preferably, the water delivery mechanism comprises a second water pump and a second telescopic water pipe, the second water pump is fixedly installed on the upper surface of the first water tank through screws, one end of the second telescopic water pipe is connected to the water outlet of the second water pump, and the other end of the second telescopic water pipe is connected to the water inlet of the second water tank.
Preferably, two fixed mounting has a plurality of second shower nozzles on the inboard surface of first mounting panel, the second shower nozzle lead to pipe with the flexible water pipe of second is connected, and is a plurality of the equal equidistance of second shower nozzle is arranged on the inboard surface of first mounting panel.
Preferably, the first water pump, the infrared sensor, the first servo motor, the second servo motor, the third servo motor and the second water pump are all electrically connected with the controller through leads.
Preferably, the inclined plates with the same height are arranged on the two side surfaces of the bottom plate.
Compared with the prior art, the invention has the beneficial effects that:
the first moving mechanism is arranged to facilitate the horizontal movement of the equipment, the second moving mechanism is arranged to facilitate the regulation of the equipment according to the height of a vehicle during spraying and dust falling, and the third moving mechanism is arranged to facilitate the longitudinal movement of the equipment, regulate the position of spraying and dust falling and reduce the waste of water resources; the first water tank that is equipped with, in the second water tank is carried with water to the water delivery mechanism of being convenient for, the first shower nozzle of connecting through first water pump carries out abundant dust fall, the controller that is equipped with, the intelligent control of this equipment of being convenient for, the infrared ray sensor who is equipped with is convenient for respond to going of vehicle, is convenient for start this equipment and sprays the dust fall, reduces to cause the influence healthily.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a second schematic structural diagram of the present invention;
FIG. 3 is a third schematic structural diagram of the present invention;
FIG. 4 is a schematic top view of the present invention;
fig. 5 is an enlarged view of a point a in fig. 1.
In the figure: 1. a base plate; 2. a guide plate; 3. a first guide groove; 4. a first moving mechanism; 41. a first lead screw; 42. a first guide bar; 43. a first servo motor; 44. a first moving slider; 5. a first mounting plate; 6. a first mounting groove; 7. a second moving mechanism; 71. a second lead screw; 72. a second guide bar; 73. a second servo motor; 74. a second movable slider; 8. a second mounting plate; 9. a second mounting groove; 10. a third moving mechanism; 101. a third screw rod; 102. a third guide bar; 103. a third servo motor; 104. a third movable slider; 11. a first water pump; 12. installing a water pipe; 13. a first nozzle; 14. placing the plate; 15. a first water tank; 16. a water delivery mechanism; 161. a second water pump; 162. a second telescopic water pipe; 17. a second water tank; 18. a second telescopic water pipe; 19. a controller; 20. an infrared sensor; 21. a second guide groove; 22. a second nozzle; 23. an inclined plate; 24. and a guide block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 5, the invention provides an intelligent atomization spraying dust-settling device for a construction site, wherein the technical scheme is as follows:
an intelligent atomization spraying dust-settling device for a construction site comprises a bottom plate 1, two guide plates 2 which are symmetrical to each other are fixedly installed on the upper surface of the bottom plate 1, first guide grooves 3 are respectively arranged on the upper surfaces of the two guide plates 2, a horizontal first moving mechanism 4 is installed in the two first guide grooves 3, two first mounting plates 5 which are symmetrical to each other are fixedly installed above the first moving mechanism 4, two symmetrical first mounting grooves 6 are respectively arranged on the side surfaces of the two first mounting plates 5, a vertical second moving mechanism 7 is installed in the first mounting groove 6, a second mounting plate 8 is installed on the second moving mechanism 7, a second mounting groove 9 is arranged on the lower surface of the second mounting plate 8, a horizontal third moving mechanism 10 is installed in the second mounting groove 9, a first water pump 11 is fixedly installed below the third moving mechanism 10, a water outlet of the first water pump 11 is connected with a mounting water pipe 12, a plurality of first spray heads 13 are fixedly installed on the installation water pipe 12, a placing plate 14 is fixedly installed on one side of the bottom plate 1, a first water tank 15 is fixedly installed on the upper surface of the placing plate 14, a water delivery mechanism 16 is fixedly installed above the first water tank 15, one end of the water delivery mechanism 16 is connected with a second water tank 17, the second water tank 17 is connected with a first water pump 11 through a second telescopic water pipe 18, a controller 19 is fixedly installed on the side surface of the first water tank 15, an infrared sensor 20 is fixedly installed on the side surface of the guide plate 2, the first moving mechanism 4 is arranged to facilitate the horizontal movement of the equipment, the second moving mechanism 7 is arranged to facilitate the adjustment of the equipment according to the height of a vehicle during dust fall spraying and facilitate dust fall, the third moving mechanism 10 is arranged to facilitate the longitudinal movement of the equipment and adjust the position of spraying and dust fall, the waste of water resources is reduced; first water tank 15 that is equipped with, the water delivery mechanism 16 of being convenient for carry water in the second water tank 17, carry out abundant dust fall through first shower nozzle 13 that first water pump 11 is connected, the controller 19 that is equipped with, the intelligent control of this equipment of being convenient for, the infrared ray sensor that is equipped with is convenient for respond to going of vehicle, is convenient for start this equipment and sprays the dust fall, reduces to cause the influence to healthy.
In this embodiment, preferably, the first moving mechanism 4 includes a first lead screw 41, a first guide rod 42, a first servo motor 43 and two first moving sliders 44, the first lead screw 41 is rotatably installed in one of the first guide grooves 3 through a bearing, the first guide rod 42 is fixedly installed in the other first guide groove 3, the first moving slider 44 is in threaded connection with the first lead screw 41, the other first moving slider 44 is in sliding connection with the first guide rod 42, the first lead screw 41 is in gear transmission connection with the first servo motor 43, the first servo motor 43 is installed on the side surface of the guide plate 2, and the first servo motor 43 drives the first lead screw 41 to rotate, so as to move the position of the device.
In this embodiment, preferably, the second moving mechanism 7 includes a second screw 71, a second guide rod 72, a second servo motor 73 and two second moving sliders 74, the second screw 71 is rotatably installed in one of the second installation grooves 9 through a bearing, the second guide rod 72 is fixed in the other second installation groove 9, one of the second moving sliders 74 is in threaded connection with the second screw 71, the other second moving slider 74 is in sliding connection with the second guide rod 72, the second screw 71 is in gear transmission connection with the second servo motor 73, the second servo motor 73 is fixedly installed on the first installation plate 5, the second installation plate 8 is fixedly installed between the two second moving sliders 74, and the second servo motor 73 drives the second screw 71 to rotate, so as to adjust the height of the apparatus.
In this embodiment, preferably, two symmetrical second guide grooves 21 are provided on the upper surface of the first mounting plate 5, two symmetrical guide blocks 24 are fixedly mounted at both ends of the second mounting plate 8, the guide blocks 24 are slidably mounted with the second guide grooves 21, and the guide blocks 24 provided slide in the second guide grooves 21, so that a good guiding effect is achieved, and the stability in adjusting the position is ensured.
In this embodiment, preferably, the third moving mechanism 10 includes a third lead screw 101, a third guide rod 102, a third servo motor 103 and a third moving slider 104, the third lead screw 101 is rotatably installed in the second installation groove 9 through a bearing, the third guide rod 102 is fixedly installed in the second installation groove 9, the third moving slider 104 is in threaded connection with the third lead screw 101 and is in sliding connection with the third guide rod 102, the third servo motor 103 is in gear transmission connection with the third lead screw 101, the third servo motor 103 is fixedly installed on the upper surface of the second installation plate 8, and the third lead screw 101 is driven to rotate by the third servo motor 103, so as to adjust the longitudinal position movement of the device in the spraying and dustfall.
In this embodiment, preferably, the water delivery mechanism 16 includes a second water pump 161 and a second telescopic water pipe 162, the second water pump 161 is fixedly mounted on the upper surface of the first water tank 15 by screws, one end of the second telescopic water pipe 162 is connected to the water outlet of the second water pump 161, the other end of the second telescopic water pipe 162 is connected to the water inlet of the second water tank 17, and the water in the first water tank 15 can flow into the second water tank 17 through the second telescopic water pipe 162 by the second water pump 161.
In this embodiment, preferably, a plurality of second spray heads 22 are fixedly mounted on the inner side surfaces of the two first mounting plates 5, the second spray heads 22 are connected with the second telescopic water pipe 162 through water pipes, the plurality of second spray heads 22 are arranged on the inner side surfaces of the first mounting plates 5 at equal intervals, and the lower sides of the vehicles are conveniently sprayed through the plurality of second spray heads 22, so that a better dust settling effect is achieved.
In this embodiment, preferably, the first water pump 11, the infrared sensor 20, the first servo motor 43, the second servo motor 73, the third servo motor 103 and the second water pump 161 are all electrically connected to the controller 19 through wires, and are controlled by the controller 19, so that the control is facilitated, the harm to the health of workers is reduced, and the intelligence is improved, wherein the infrared sensor 20 is an infrared sensor of the type LR-W500C in the prior art.
In this embodiment, it is preferable that the inclined plates 23 having the same height are mounted on both side surfaces of the bottom plate 1, so that the vehicle can be conveniently driven, and the damage to the device can be reduced.
The working principle and the using process of the invention are as follows:
this intelligent atomizing that building site used sprays when dust fall equipment uses, start infrared sensor 20 through controller 19, the vehicle that need spray the dust fall through the response of infrared sensor 20, start first servo motor 43, second servo motor 73 and third servo motor 103, horizontal direction to this equipment, height-adjusting position and vertical horizontal migration position are adjusted, until the vehicle leaves bottom plate 1, start second water pump 161, the water of first water tank 15 of being convenient for through second water pump 161 flows into in second water tank 17 through the flexible water pipe 162 of second, the water in the second water tank 17 of extraction by first water pump 11 again is carried out the dust fall by first shower nozzle 13 blowout, a plurality of second shower nozzles 22 through the installation, be convenient for spray the below of vehicle, reach better dust fall effect.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides an intelligent atomizing that building site used sprays dust fall equipment, includes bottom plate (1), its characterized in that: the upper surface of the bottom plate (1) is fixedly provided with two guide plates (2) which are symmetrical to each other, the upper surfaces of the two guide plates (2) are respectively provided with a first guide groove (3), a horizontal first moving mechanism (4) is arranged in the two first guide grooves (3), two first mounting plates (5) which are symmetrical to each other are fixedly arranged above the first moving mechanism (4), two first mounting grooves (6) which are symmetrical to each other are arranged on the side surfaces of the two first mounting plates (5), a vertical second moving mechanism (7) is arranged in the first mounting grooves (6), a second mounting plate (8) is arranged on the second moving mechanism (7), a second mounting groove (9) is arranged on the lower surface of the second mounting plate (8), and a horizontal third moving mechanism (10) is arranged in the second mounting groove (9), a first water pump (11) is fixedly arranged below the third moving mechanism (10), a water outlet of the first water pump (11) is connected with a mounting water pipe (12), a plurality of first spray heads (13) are fixedly arranged on the mounting water pipe (12), a placing plate (14) is fixedly arranged on one side of the bottom plate (1), a first water tank (15) is fixedly arranged on the upper surface of the placing plate (14), a water delivery mechanism (16) is fixedly arranged above the first water tank (15), one end of the water delivery mechanism (16) is connected with a second water tank (17), the second water tank (17) is connected with the first water pump (11) through a second telescopic water pipe (18), a controller (19) is fixedly arranged on the side surface of the first water tank (15), and an infrared sensor (20) is fixedly arranged on the side surface of the guide plate (2).
2. The intelligent atomizing spraying dust falling equipment for the construction site according to claim 1, characterized in that: the first moving mechanism (4) comprises a first screw rod (41), a first guide rod (42), a first servo motor (43) and two first moving sliding blocks (44), the first screw rod (41) is rotatably installed in one of the first guide grooves (3) through a bearing, the first guide rod (42) is fixedly installed in the other first guide groove (3), the first moving sliding block (44) is in threaded connection with the first screw rod (41), the other first moving sliding block (44) is in sliding connection with the first guide rod (42), the first screw rod (41) is in gear transmission connection with the first servo motor (43), and the first servo motor (43) is installed on the side face of the guide plate (2).
3. The intelligent atomizing spraying dust falling equipment for the construction site according to claim 2, characterized in that: the second moving mechanism (7) comprises a second screw rod (71), a second guide rod (72), a second servo motor (73) and two second moving sliding blocks (74), the second screw rod (71) is rotatably arranged in one of the second mounting grooves (9) through a bearing, the second guide rod (72) is fixed in the other second mounting groove (9), one of the second movable sliding blocks (74) is in threaded connection with the second screw rod (71), the other second movable sliding block (74) is in sliding connection with the second guide rod (72), the second screw rod (71) is in transmission connection with the second servo motor (73) through a gear, the second servo motor (73) is fixedly arranged on the first mounting plate (5), the second mounting plate (8) is fixedly mounted between the two second movable sliding blocks (74).
4. The intelligent atomizing spraying dust falling equipment for the construction site according to claim 1, characterized in that: be equipped with two second guide way (21) of symmetry on the upper surface of first mounting panel (5), the equal fixed mounting in both ends of second mounting panel (8) has guide block (24) of two symmetries, guide block (24) with second guide way (21) slidable mounting.
5. The intelligent atomizing spraying dust falling equipment for the construction site according to claim 4, characterized in that: the third moving mechanism (10) comprises a third screw rod (101), a third guide rod (102), a third servo motor (103) and a third moving sliding block (104), the third screw rod (101) is rotatably installed in the second installation groove (9) through a bearing, the third guide rod (102) is fixedly installed in the second installation groove (9), the third moving sliding block (104) is in threaded connection with the third screw rod (101) and is in sliding connection with the third guide rod (102), the third servo motor (103) is connected with the third screw rod (101) through gear transmission, and the third servo motor (103) is fixedly installed on the upper surface of the second installation plate (8).
6. The intelligent atomizing spraying dust falling equipment for the construction site according to claim 1, characterized in that: the water delivery mechanism (16) comprises a second water pump (161) and a second telescopic water pipe (162), the second water pump (161) is fixedly installed on the upper surface of the first water tank (15) through screws, one end of the second telescopic water pipe (162) is connected to a water outlet of the second water pump (161), and the other end of the second telescopic water pipe is connected to a water inlet of the second water tank (17).
7. The intelligent atomizing spraying dust falling equipment for the construction site according to claim 6, characterized in that: two fixed mounting has a plurality of second shower nozzles (22) on the inboard surface of first mounting panel (5), second shower nozzle (22) through the water pipe with the flexible water pipe of second (162) is connected, and is a plurality of second shower nozzle (22) are equidistant to be arranged on the inboard surface of first mounting panel (5).
8. The intelligent atomizing spraying dust falling equipment for the construction site according to claim 6, characterized in that: the first water pump (11), the infrared sensor (20), the first servo motor (43), the second servo motor (73), the third servo motor (103) and the second water pump (161) are all electrically connected with the controller (19) through leads.
9. The intelligent atomizing spraying dust falling equipment for the construction site according to claim 6, characterized in that: inclined plates (23) with the same height are arranged on the surfaces of the two sides of the bottom plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010913524.5A CN112156587A (en) | 2020-09-03 | 2020-09-03 | Intelligent atomization that building site used sprays dust fall equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010913524.5A CN112156587A (en) | 2020-09-03 | 2020-09-03 | Intelligent atomization that building site used sprays dust fall equipment |
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| CN112156587A true CN112156587A (en) | 2021-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010913524.5A Pending CN112156587A (en) | 2020-09-03 | 2020-09-03 | Intelligent atomization that building site used sprays dust fall equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114588723A (en) * | 2022-03-22 | 2022-06-07 | 安徽省路桥工程集团有限责任公司 | A spray dust device for tunnel entrance to a cave construction dregs car |
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| AT261423B (en) * | 1965-12-22 | 1968-04-25 | Heinrich Dipl Ing Wuester | Device for the automatic cleaning of motor vehicles |
| CN205186111U (en) * | 2015-12-09 | 2016-04-27 | 中投晟元资产管理（北京）有限公司 | Carwash water recovery unit |
| CN205735549U (en) * | 2016-06-25 | 2016-11-30 | 台州市宇博建材科技有限公司 | Cement stirring station |
| CN109229069A (en) * | 2018-08-30 | 2019-01-18 | 芜湖鸣人汽车维修服务有限公司 | A kind of automatic car washing device |
| CN209208721U (en) * | 2018-11-08 | 2019-08-06 | 广东冠粤路桥有限公司 | Divide belt construction flusher in earth shoulder |
| CN211001259U (en) * | 2019-09-16 | 2020-07-14 | 成都志达商品混凝土厂 | Tank car washing mechanism with good washing effect |
| CN211335920U (en) * | 2019-12-11 | 2020-08-25 | 宿迁市京成建材有限公司 | Automatic car washing equipment of business turn over |
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2020
- 2020-09-03 CN CN202010913524.5A patent/CN112156587A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT261423B (en) * | 1965-12-22 | 1968-04-25 | Heinrich Dipl Ing Wuester | Device for the automatic cleaning of motor vehicles |
| CN205186111U (en) * | 2015-12-09 | 2016-04-27 | 中投晟元资产管理（北京）有限公司 | Carwash water recovery unit |
| CN205735549U (en) * | 2016-06-25 | 2016-11-30 | 台州市宇博建材科技有限公司 | Cement stirring station |
| CN109229069A (en) * | 2018-08-30 | 2019-01-18 | 芜湖鸣人汽车维修服务有限公司 | A kind of automatic car washing device |
| CN209208721U (en) * | 2018-11-08 | 2019-08-06 | 广东冠粤路桥有限公司 | Divide belt construction flusher in earth shoulder |
| CN211001259U (en) * | 2019-09-16 | 2020-07-14 | 成都志达商品混凝土厂 | Tank car washing mechanism with good washing effect |
| CN211335920U (en) * | 2019-12-11 | 2020-08-25 | 宿迁市京成建材有限公司 | Automatic car washing equipment of business turn over |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114588723A (en) * | 2022-03-22 | 2022-06-07 | 安徽省路桥工程集团有限责任公司 | A spray dust device for tunnel entrance to a cave construction dregs car |
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Application publication date: 20210101 |