CN112090191A - Air dust adsorption equipment for construction - Google Patents
Air dust adsorption equipment for construction Download PDFInfo
- Publication number
- CN112090191A CN112090191A CN202011022258.3A CN202011022258A CN112090191A CN 112090191 A CN112090191 A CN 112090191A CN 202011022258 A CN202011022258 A CN 202011022258A CN 112090191 A CN112090191 A CN 112090191A
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- filter screen
- air
- motor
- rod
- connecting column
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0036—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions by adsorption or absorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0039—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices
- B01D46/0041—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding
- B01D46/0045—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding by using vanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
- B01D46/645—Protecting screens at filter inlet or outlet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/68—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements
- B01D46/681—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements by scrapers, brushes or the like
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention is suitable for the field of buildings, and provides an air dust adsorption device for building construction, which comprises: the bottom plate, the supporting seat is installed to the bottom plate bottom, quick-witted case is installed to the bottom plate top, machine case lateral part is equipped with the air inlet net, the roof is installed at machine roof portion, first motor is installed to the roof below, local intermittent type rotary device is installed to first motor below, purifier is installed to local intermittent type rotary device bottom, and the device makes gasification equipment can be rotatory of intermittent type formula through additional local intermittent type rotary device rather than installing, to change the orientation of purifier air intake, make the air in different position all can obtain abundant absorption purification, reduce remaining of dust, and installed cleaning device on the filter screen, make and clean the collection to the dust on the filter screen, avoid blockking up the filter screen, lead to unable air inlet.
Description
Technical Field
The invention belongs to the field of buildings, and particularly relates to an air dust adsorption device for building construction.
Background
The dustproof of buildings means that many buildings have dustproof requirements, and some buildings or some rooms in the buildings have high requirements on preventing dust particle pollution, for example, clean workshops of the departments of aerospace industry, atomic energy industry, electronic industry and the like, sterile operating rooms of the medical department and biological clean rooms of the medical department all require strict dustproof measures on the buildings. The building dust prevention can be divided into general building dust prevention and comprehensive building dust prevention according to the use requirements. The general building is dustproof, completely depends on building measures to achieve the dustproof effect, has no air purification facility, and is suitable for buildings with general dustproof requirements or windy and sandy areas. Comprehensive building dust prevention is realized, and not only are building measures adopted, but also air purification measures are adopted. Many buildings have dust-proof requirements, and some buildings or some rooms in buildings have high requirements on preventing dust particles from polluting, such as clean workshops in the departments of aerospace industry, atomic energy industry, electronic industry and the like, sterile operating rooms in the medical department and biological clean rooms in the medical department, which all require strict dust-proof measures to be taken on the buildings.
Most can settle a dust adsorption equipment and come to adsorb the processing to the dust that the construction produced in the building site, and current dust adsorption equipment can only carry out the dust to a fritter region and adsorb, the direction in unable regulation wind gap, so only can make the air in single position obtain purifying, can't be with air purification effect maximize, the air that leads to other positions can't be purified, air purification's efficiency has also been influenced, and simultaneously, after air purifier has used for a long time, it piles up to form a large amount of dusts in the position of filter screen easily, if not clear up in time, then can influence air purifier's work efficiency, serious then can lead to the machine to damage.
Disclosure of Invention
The embodiment of the invention aims to provide an air dust adsorption device for building construction, which can automatically adjust the air inlet direction and automatically clean dust on a filter screen, and aims to solve the problems that the existing dust adsorption device can only adsorb dust in a small area and cannot adjust the direction of an air port, so that air in a single direction can only be purified, the air purification effect cannot be maximized, air in other directions cannot be purified, and the air purification efficiency is also influenced.
The embodiment of the invention is realized in such a way that the air dust adsorption device for building construction comprises: the bottom plate, the supporting seat is installed to the bottom plate, quick-witted case is installed to the bottom plate top, machine case lateral part is equipped with the air inlet net, roof is installed at machine roof portion, first motor is installed to the roof below, local intermittent type rotary device is installed to first motor below, purifier is installed to local intermittent type rotary device bottom.
Preferably, the local intermittent rotation device comprises a first rotating rod, the first rotating rod is fixedly connected with a first motor, a control rod is installed at the bottom of the first rotating rod, and a first guide column is installed at the other end of the control rod; a first connecting column is fixedly installed at the bottom of the top plate, the other end of the first connecting column is connected with a first rotary table through a bearing, a second guide column is installed on the side portion of the first rotary table, a linkage disc is fixedly installed in the middle of the first rotary table, a first guide groove is formed in the linkage disc, and the first guide groove is matched with the first guide column; the top plate bottom is located first spliced pole bearing connection all around and is connected with the second spliced pole, fixed mounting has the triangle dish on the second spliced pole, it has the second guide way to open on the triangle dish, the second guide way cooperatees with the second guide post, second spliced pole bottom fixed mounting has the second carousel, second carousel and purifier fixed connection.
Preferably, the first rotating disc and the triangular disc are not on the same horizontal plane, and the horizontal plane of the first rotating disc is located above the horizontal plane of the triangular disc.
Preferably, the purification device comprises an air box, an air inlet and an air outlet are respectively arranged at two ends of the air box, a first filter screen and a second filter screen are arranged in the air box, a second motor is mounted on the second filter screen, a rotary column is mounted on the second motor, and fan blades are mounted on the side portion of the rotary column; install the third motor on the first filter screen, install cleaning device on the third motor, the last cleaning rod of installing of cleaning device, the last clean brush of installing of cleaning rod.
Preferably, the first filter screen and the second filter screen are a HEPA filter screen and an activated carbon filter screen, respectively.
Preferably, the cleaning device comprises a third connecting column, the third connecting column is fixedly connected with one side of the first filter screen, a second rotating rod is connected to the middle of the third connecting column through a bearing, the third connecting column is installed at the other end of the second rotating rod, the third connecting column is hinged to a sleeve ring through the other end of the first filter screen, a first stop lever and a second stop lever are installed on the side portion of the sleeve ring, and a limiting latch is installed at the other end of the second stop lever; the other end of the third connecting column is in bearing connection with a control panel, a sliding groove is formed in the control panel, a sliding block is arranged in the sliding groove, a third rotating rod is in bearing connection with the sliding block, and the other end of the third rotating rod is fixedly connected with a third motor; install spacing post on the control panel, spacing post cooperatees with first pin, first filter screen opposite side bearing is connected with the third carousel, third carousel and cleaning rod fixed connection, third carousel lateral part is equipped with rotatory tooth, rotatory tooth cooperatees with spacing latch.
Preferably, the third rotary table is installed at the circle center of the first filter screen, and the length of the cleaning rod is smaller than the radius of the first filter screen.
The air dust adsorption device for building construction, which can automatically adjust the air inlet direction and automatically clean dust on the filter screen, provided by the embodiment of the invention, has the following beneficial effects:
the device makes gasification equipment rotate with purifier rather than installation through additional local intermittent type rotary device to change the orientation of purifier air intake, make the air in different position all can obtain abundant absorption and purification, reduce remaining of dust, and installed cleaning device on the filter screen, make the dust that comes on to the filter screen clean the collection, avoid blockking up the filter screen, lead to unable air inlet.
Drawings
Fig. 1 is a schematic structural diagram of an air dust adsorption device for building construction according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a local intermittent rotation device of an air dust adsorption device for building construction according to an embodiment of the present invention;
FIG. 3 is a view showing a working state of a local intermittent rotation device of an air dust adsorption device for building construction according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a purification device of an air dust adsorption device for building construction according to an embodiment of the present invention;
FIG. 5 is a side view of an air dust adsorbing device for building construction according to an embodiment of the present invention;
FIG. 6 is a view showing a working state of a cleaning apparatus for an air dust adsorbing device for building construction according to an embodiment of the present invention in FIG. 1;
FIG. 7 is a view showing a working state of a cleaning apparatus for an air dust adsorbing device for construction according to an embodiment of the present invention in FIG. 2;
fig. 8 is a perspective view of a cleaning device of an air dust adsorbing device for building construction according to an embodiment of the present invention.
In the drawings: 1. a base plate; 2. a supporting seat; 3. a chassis; 4. an air inlet net; 5. a top plate; 6. a first motor; 7. a local intermittent rotation device; 71. a first rotating rod; 72. a control lever; 73. a first guide post; 74. a first connecting column; 75. a first turntable; 76. a second guide post; 77. a linkage disk; 78. a first guide groove; 79. a second connecting column; 710. a triangular plate; 711. a second guide groove; 712. a second turntable; 8. a purification device; 81. an air box; 82. an air inlet; 83. an air outlet; 84. a first filter screen; 85. a second filter screen; 86. a second motor; 87. a spin column; 88. a fan blade; 89. a third motor; 810. a cleaning rod; 811. cleaning the brush; 9. a cleaning device; 91. a third connecting column; 92. a second swing lever; 93. a third connecting column; 94. a collar; 95. a first bar; 96. a second bar; 97. limiting latch teeth; 98. a control panel; 99. a sliding groove; 910. a slider; 911. a third swing lever; 912. a limiting column; 913. a third turntable; 914. the teeth are rotated.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
Example 1:
as shown in fig. 1, in the embodiment of the present invention, the method includes: the improved structure of the air conditioner comprises a bottom plate 1, a supporting seat 2 is installed at the bottom of the bottom plate 1, a case 3 is installed above the bottom plate 1, an air inlet net 4 is arranged on the side portion of the case 3, a top plate 5 is installed at the top of the case 3, a first motor 6 is installed below the top plate 5, a local intermittent rotating device 7 is installed below the first motor 6, and a purifying device 8 is installed at the bottom of the local intermittent rotating device 7.
Start first motor 6 and purifier 8 during the use, first motor 6 can drive local intermittent type rotary device 7 work, drives purifier 8 and changes the air inlet direction, and purifier 8 can come from the external air absorption through air inlet net 4 simultaneously and purify, realizes air purification's effect.
Example 2:
as shown in fig. 2 and 3, in the embodiment of the present invention, the local intermittent rotation device 7 includes a first rotating rod 71, the first rotating rod 71 is fixedly connected to the first motor 6, a control rod 72 is installed at the bottom of the first rotating rod 71, and a first guide post 73 is installed at the other end of the control rod 72; a first connecting post 74 is fixedly installed at the bottom of the top plate 5, the other end of the first connecting post 74 is connected with a first rotating disc 75 through a bearing, a second guide post 76 is installed at the side part of the first rotating disc 75, a linkage disc 77 is fixedly installed in the middle of the first rotating disc 75, a first guide groove 78 is formed in the linkage disc 77, and the first guide groove 78 is matched with the first guide post 73; the bearing is connected with second spliced pole 79 all around the roof 5 bottom is located first spliced pole, fixed mounting has triangle dish 710 on the second spliced pole 79, it has second guide way 711 to open on the triangle dish 710, second guide way 711 cooperatees with second guide post 76, second spliced pole 79 bottom fixed mounting has second carousel 712, second carousel 712 and purifier 8 fixed connection.
During the use, start first motor 6, first motor 6 can drive the control lever 72 through first swing arm 71 and rotate, and by the cooperation between first guide post 73 and the first guide way 78, drive linkage disk 77 intermittent type formula and rotate, and then drive first carousel 75 and do intermittent type formula and rotate, along with first carousel 75's rotation, when second guide post 76 contacts with second guide way 711, can drive triangle dish 710 rotatory, and then drive the purifier 8 rotation of below, realize changing the effect of air inlet direction.
In the embodiment of the present invention, the first rotating disk 75 and the triangular disk 710 are not on the same horizontal plane, and the horizontal plane of the first rotating disk 75 is located above the horizontal plane of the triangular disk 710, so as to ensure that the first rotating disk 75 can operate normally, and avoid the triangular disk 710 from rotating due to unnecessary contact between the first rotating disk 75 and the triangular disk 710.
Example 3:
as shown in fig. 4 and 5, in the embodiment of the present invention, the purification device 8 includes an air box 81, an air inlet 82 and an air outlet 83 are respectively disposed at two ends of the air box 81, a first filter screen 84 and a second filter screen 85 are disposed inside the air box 81, a second motor 86 is mounted on the second filter screen 85, a rotary column 87 is mounted on the second motor 86, and fan blades 88 are mounted on a side portion of the rotary column 87; install third motor 89 on the second filter screen 85, install cleaning device 9 on the third motor 89, the last cleaning rod 810 of installing of cleaning device 9, the last cleaning brush 811 of installing of cleaning rod 810.
During the use, start second motor 86, second motor 86 can drive flabellum 88 and rotate, makes outside air can be inhaled inside bellows 81, and the air can be successively filtered through first filter screen 84 and second filter screen 85, then is discharged by air outlet 83, simultaneously, starts third motor 89, can drive cleaning device 9 and clean first filter screen 84, avoids the dust to pile up.
In the embodiment of the present invention, the first filter screen 84 and the second filter screen 85 are a HEPA filter screen and an activated carbon filter screen, respectively, and the purifying device 8 firstly filters large dust in the air through the HEPA filter screen, and then adsorbs fine dust in the air through the activated carbon filter screen, so that the air evolution effect is better.
As shown in fig. 6 to 8, in the embodiment of the present invention, the cleaning device 9 includes a third connecting column 91, the third connecting column 91 is fixedly connected to one side of the first filter screen 84, a second rotating rod 92 is connected to a middle bearing of the third connecting column 91, a third connecting column 93 is installed at the other end of the second rotating rod 92, the third connecting column 93 is hinged to a sleeve ring 94 through the other end of the first filter screen 84, a first stop lever 95 and a second stop lever 96 are installed at a side portion of the sleeve ring 94, and a limiting latch 97 is installed at the other end of the second stop lever 96; the other end of the third connecting column 91 is in bearing connection with a control panel 98, the control panel 98 is provided with a sliding groove 99, a sliding block 910 is arranged inside the sliding groove 99, the sliding block 910 is in bearing connection with a third rotating rod 911, and the other end of the third rotating rod 911 is fixedly connected with a third motor 89; the utility model discloses a cleaning device, including control panel 98, be equipped with spacing post 912 on the control panel 98, spacing post 912 cooperatees with first pin 95, the other side bearing of first filter screen 84 is connected with third carousel 913, third carousel 913 and cleaning rod 810 fixed connection, third carousel 913 lateral part is equipped with rotatory tooth 914, rotatory tooth 914 cooperatees with spacing latch 97.
Example 4:
when the cleaning device is used, the third motor 89 drives the sliding block 910 to rotate in the sliding groove 99 through the third rotating rod 911 and drives the control board 98 to rotate, as shown in fig. 6, when the control board 98 rotates clockwise, the limiting post 912 at the left side of the control board 98 contacts with the first stop lever 95, so that the first stop lever 95 rotates, at this time, the limiting latch 97 at the other end of the second stop lever 96 matches with the rotating teeth 914, so as to drive the third rotating disc 913 to rotate, and further drive the cleaning rod 810 to rotate, so as to clean the first filter screen 84, and after the sliding block 910 rotates half a circle, the control board 98 is driven to rotate counterclockwise, as shown in fig. 7, at this time, the limiting post 912 at the right side of the control board 98 contacts with the first stop lever 95, so as to drive the second stop lever 96 to rotate counterclockwise, so that the limiting latch 97 is separated from the rotating teeth 914, at this time, the third rotating disc 913 cannot rotate, and so reciprocates, and the effect, the intermittent rotation can reduce the influence on the air inlet effect.
In the embodiment of the present invention, the third rotating disk 913 is installed at the center of the first filter screen 84, and the length of the cleaning rod 810 is smaller than the radius of the first filter screen 84, so that the other end of the cleaning rod 810 does not contact with the inner wall of the air box 81 during the rotation of the cleaning rod 810 driven by the third rotating disk 913, which results in the blockage of the rotation of the third rotating disk 913.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. An air dust adsorbing device for building construction, characterized in that the device comprises: bottom plate (1), supporting seat (2) are installed to bottom plate (1) bottom, quick-witted case (3) are installed to bottom plate (1) top, quick-witted case (3) lateral part is equipped with air inlet net (4), roof (5) are installed at quick-witted case (3) top, first motor (6) are installed to roof (5) below, local intermittent type rotary device (7) are installed to first motor (6) below, purifier (8) are installed to local intermittent type rotary device (7) bottom.
2. The air dust adsorption device for building construction according to claim 1, wherein the local intermittent rotation device (7) comprises a first rotating rod (71), the first rotating rod (71) is fixedly connected with a first motor (6), a control rod (72) is installed at the bottom of the first rotating rod (71), and a first guide column (73) is installed at the other end of the control rod (72); a first connecting column (74) is fixedly mounted at the bottom of the top plate (5), the other end of the first connecting column (74) is connected with a first rotating disc (75) through a bearing, a second guide column (76) is mounted on the side portion of the first rotating disc (75), a linkage disc (77) is fixedly mounted in the middle of the first rotating disc (75), a first guide groove (78) is formed in the linkage disc (77), and the first guide groove (78) is matched with the first guide column (73); roof (5) bottom is located first spliced pole bearing all around and is connected with second spliced pole (79), fixed mounting has triangle dish (710) on second spliced pole (79), it has second guide way (711) to open on triangle dish (710), second guide way (711) cooperate with second guide post (76), second spliced pole (79) bottom fixed mounting has second carousel (712), second carousel (712) and purifier (8) fixed connection.
3. The air dust adsorbing device for building construction according to claim 2, wherein the first rotating disk (75) is not on the same horizontal plane as the triangular disk (710), and the horizontal plane of the first rotating disk (75) is above the horizontal plane of the triangular disk (710).
4. The air dust adsorption device for building construction according to claim 1, wherein the purification device (8) comprises an air box (81), an air inlet (82) and an air outlet (83) are respectively arranged at two ends of the air box (81), a first filter screen (84) and a second filter screen (85) are arranged inside the air box (81), a second motor (86) is installed on the second filter screen (84), a rotary column (87) is installed on the second motor (86), and fan blades (88) are installed at the side part of the rotary column (87); install third motor (89) on second filter screen (85), install cleaning device (9) on third motor (89), install cleaning rod (810) on cleaning device (9), install cleaning brush (811) on cleaning rod (810).
5. The air dust adsorbing device for building construction according to claim 4, wherein the first filter screen (83) and the second filter screen (84) are a HEPA filter screen and an activated carbon filter screen, respectively.
6. The air dust adsorption device for building construction according to claim 4, wherein the cleaning device (9) comprises a third connecting column (91), the third connecting column (91) is fixedly connected with one side of the first filter screen (83), a second rotating rod (92) is connected to the middle of the third connecting column (91) in a bearing mode, a third connecting column (93) is installed at the other end of the second rotating rod (92), the third connecting column (93) penetrates through the other end of the first filter screen (83) and is hinged to a sleeve ring (94), a first stop lever (95) and a second stop lever (96) are installed on the side portion of the sleeve ring (94), and a limiting latch (97) is installed at the other end of the second stop lever (96); the other end of the third connecting column (91) is in bearing connection with a control panel (98), a sliding groove (99) is formed in the control panel (98), a sliding block (910) is arranged inside the sliding groove (99), a third rotating rod (911) is in bearing connection with the sliding block (910), and the other end of the third rotating rod (911) is fixedly connected with a third motor (89); install spacing post (912) on control panel (98), spacing post (912) cooperatees with first pin (95), first filter screen (83) other side bearing is connected with third carousel (913), third carousel (913) and cleaning rod (810) fixed connection, third carousel (913) lateral part is equipped with rotatory tooth (914), rotatory tooth (914) cooperate with spacing latch (97).
7. The air dust adsorbing device for building construction according to claim 6, wherein the third rotating disk (913) is installed at a center of the first filter (83), and a length of the sweeping rod (810) is smaller than a radius of the first filter (83).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011022258.3A CN112090191A (en) | 2020-09-25 | 2020-09-25 | Air dust adsorption equipment for construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011022258.3A CN112090191A (en) | 2020-09-25 | 2020-09-25 | Air dust adsorption equipment for construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112090191A true CN112090191A (en) | 2020-12-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011022258.3A Withdrawn CN112090191A (en) | 2020-09-25 | 2020-09-25 | Air dust adsorption equipment for construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112090191A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112854040A (en) * | 2020-12-29 | 2021-05-28 | 苏州伯行科技有限公司 | Intelligent traffic indicating device capable of effectively reducing automobile emission pollution |
-
2020
- 2020-09-25 CN CN202011022258.3A patent/CN112090191A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112854040A (en) * | 2020-12-29 | 2021-05-28 | 苏州伯行科技有限公司 | Intelligent traffic indicating device capable of effectively reducing automobile emission pollution |
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Application publication date: 20201218 |
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