CN214486249U - Smoke removal device for urban asphalt road maintenance vehicle - Google Patents
Smoke removal device for urban asphalt road maintenance vehicle Download PDFInfo
- Publication number
- CN214486249U CN214486249U CN202120220262.4U CN202120220262U CN214486249U CN 214486249 U CN214486249 U CN 214486249U CN 202120220262 U CN202120220262 U CN 202120220262U CN 214486249 U CN214486249 U CN 214486249U
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- Prior art keywords
- filter
- box
- filter screen
- groove
- road maintenance
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- 239000010426 asphalt Substances 0.000 title claims abstract description 30
- 239000000779 smoke Substances 0.000 title claims abstract description 28
- 238000012423 maintenance Methods 0.000 title claims abstract description 25
- 238000000746 purification Methods 0.000 claims abstract description 36
- 238000001914 filtration Methods 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 238000004140 cleaning Methods 0.000 claims description 41
- 238000007789 sealing Methods 0.000 claims description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 17
- 239000003546 flue gas Substances 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 12
- 239000008187 granular material Substances 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 3
- 241000220317 Rosa Species 0.000 description 11
- 238000009434 installation Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The application relates to a smoke removal device for an urban asphalt road maintenance vehicle, which relates to the field of road maintenance technology and comprises a rack and a purification mechanism arranged on the rack, wherein the purification mechanism comprises a collection port fixed on the rack, a purification box arranged on the rack, a filter box arranged on one side of the purification box and an exhaust fan arranged on one side of the filter box; the collecting port is communicated with the purifying box through a first air guide pipe; the purifying box is communicated with the filtering box through a second air guide pipe; and the filter box is communicated with the exhaust fan through a third air guide pipe. This application has and is convenient for collect the filtration to the granule in the pitch flue gas, improves the effect to the protection of air exhauster.
Description
Technical Field
The application relates to the field of road maintenance technology, in particular to a smoke removal device for an urban asphalt road maintenance vehicle.
Background
At present, with the rapid development of the road construction industry in China, particularly the continuous increase of the mileage of high-grade roads, the importance of road surface maintenance machinery in China is increased, roads in various cities are generally asphalt roads nowadays, the asphalt road maintenance vehicle is a special vehicle specially researched and developed aiming at the maintenance operation requirements of the asphalt roads, is convenient for carrying workers, transferring tools and loading and unloading construction materials, and is widely applied to the maintenance and repair of the urban asphalt roads.
The asphalt road maintenance vehicle can be used for spraying and filling disease road conditions such as shallow pits and cracks on a road by using asphalt, and the asphalt needs to be heated in the using process, so that a large amount of asphalt smoke can be generated, the asphalt smoke is purified and treated, the emission condition is enabled to meet the atmospheric environment, and the asphalt smoke is efficiently treated and is usually purified and treated by using an exhaust fan to extract gas.
Aiming at the related technologies, the inventor thinks that asphalt smoke is directly extracted through the exhaust fan, oily parts in high-temperature smoke are easily adhered to the inside of the exhaust fan to affect use, and the high-temperature smoke easily damages the exhaust fan.
SUMMERY OF THE UTILITY MODEL
In order to facilitate collecting and filtering the particles in the asphalt flue gas, the protection of the exhaust fan is improved, and the application provides a smoke removal device for an urban asphalt road maintenance vehicle.
The application provides a pair of smoke abatement device for urban asphalt road maintenance vehicle adopts following technical scheme:
a smoke removal device for an urban asphalt road maintenance vehicle comprises a rack and a purification mechanism arranged on the rack, wherein the purification mechanism comprises a collection port fixed on the rack, a purification box arranged on the rack, a filter box arranged on one side of the purification box and an exhaust fan arranged on one side of the filter box; the collecting port is communicated with the purifying box through a first air guide pipe; the purifying box is communicated with the filtering box through a second air guide pipe; and the filter box is communicated with the exhaust fan through a third air guide pipe.
Through adopting above-mentioned technical scheme, start the air exhauster, the flue gas can follow and collect the mouth and get into to the purifying box in, purifies the back through the purifying box, reentrant filters once more to the rose box in, and the air after the air exhauster will purify clean at last is taken out, is convenient for retrieve the granule in the flue gas, improves the protection to the air exhauster.
Preferably, a purification component is arranged in the purification box; the purification component comprises a filter barrel fixed on the inner bottom wall of the purification box; a sealing cover is detachably arranged at the bottom of the frame and at the bottom of the filter barrel; the sealing cover is rotatably connected with a rotating shaft; the rotating shaft is positioned in the filter barrel, and a cleaning part for cleaning the filter barrel is arranged in the axial direction of the rotating shaft; the lower end face of the sealing cover is provided with a motor, and an output shaft of the motor is fixedly connected with the rotating shaft.
Through adopting above-mentioned technical scheme, in the air admission filter vat, through the prefilter of filter vat for granule in the flue gas is blockked in the filter vat, is favorable to retrieving the granule in the flue gas, makes the air after the cleanness flow into the rose box in the effect of air exhauster, filters once more. After the filter vat is used for a long time, through opening the motor for the motor drives the pivot and rotates, and clearance portion clears up filter vat inside, can make the filter vat keep good purifying effect. Sealed lid detachably installs in the bottom of frame, can be convenient for dismantle sealed lid get off and clear up the granule in the filter vat when the granule of collecting reaches a certain degree.
Preferably, the cleaning part comprises a first cleaning rod fixed with the side wall of the rotating shaft; two first cleaning rods are symmetrically arranged in the axial direction of the rotating shaft; a second cleaning rod attached to the inner wall of the filter barrel is arranged on one side, away from the rotating shaft, of the first cleaning rod; a third cleaning rod is arranged at the upper end of the second cleaning rod, and the other end of the third cleaning rod is fixed with the side wall of the rotating shaft; the third cleaning rod is attached to the inner top wall of the filter barrel.
Through adopting above-mentioned technical scheme, the motor drives the pivot and rotates, and the epaxial second clearance pole of commentaries on classics clears up the lateral wall of filter vat, and the third clearance pole clears up the interior roof of filter vat, can make and retrieve the granule under the filter vat clearance, will seal the lid and dismantle, can realize handling the granule of collection.
Preferably, a first filter screen and a second filter screen which is arranged at an interval with the first filter screen are arranged in the filter box; the aperture of the filtering hole of the first filter screen is larger than that of the filtering hole of the second filter screen.
Through adopting above-mentioned technical scheme, set up first filter screen and second filter screen, can further filter the particulate matter that mix with in the flue gas, improve the purifying effect to the flue gas, the filter screen of double-deck setting can further strengthen filterable effect.
Preferably, the upper end surface of the filter box is provided with two mounting ports arranged at intervals; the first filter screen and the second filter screen are respectively inserted into the two mounting ports; the filter box is provided with a mounting assembly for fixing the first filter screen and the second filter screen.
Through adopting above-mentioned technical scheme, set up the installing port in the upper end of rose box, can be convenient for dismantle the installation to first filter screen and second filter screen, can even filter first filter screen and second and clear up, improve the filter effect of rose box to the flue gas.
Preferably, the edges of the first filter screen and the second filter screen are both provided with fixing frames; sliding grooves are formed in the two sides of the fixing frame; the mounting assembly comprises a clamping block connected in the sliding groove in a sliding manner and a connecting spring for connecting the clamping block and the wall of the sliding groove; and clamping grooves matched with the clamping blocks in a clamping manner are formed in two opposite side walls of the filter box.
Through adopting above-mentioned technical scheme, peg graft first filter screen and second filter screen in the installing port, fixture block on the fixed frame can be extruded by the rose box, and in the spout withdraws to, when spout and draw-in groove align, under coupling spring's effect for the fixture block stretches out and the joint in the draw-in groove, and the completion is fixed the installation of first filter screen and second filter screen, simple structure, and simple to operate is reliable.
Preferably, an unlocking assembly is arranged on the filter box; a limiting groove with the groove width larger than that of the clamping groove is formed in one side, far away from the clamping block, of the clamping groove; one side of the limiting groove, which is far away from the clamping groove, is provided with a movable groove; the groove width of the movable groove is consistent with that of the clamping groove; the unlocking assembly comprises a driving block connected in the clamping groove in a sliding mode and a limiting block arranged on the driving block; the limiting block is arranged in the limiting groove in a sliding manner; one end of the driving block is abutted against one end of the clamping block, and the other end of the driving block extends out of the movable groove.
Through adopting above-mentioned technical scheme, set up the unblock subassembly, first filter screen of convenient to detach and second filter screen are through pressing the drive block for the drive block extrudees the fixture block, makes the tip of fixture block break away from the draw-in groove, takes first filter screen and second filter screen out from the installing port, can realize the dismantlement to first filter screen and second filter screen.
Preferably, the collecting opening is in a bell mouth shape, and a filtering cover is connected to the collecting opening in a threaded manner.
Through adopting above-mentioned technical scheme, the collection mouth of horn mouth form can absorb the flue gas fast and purify, and threaded connection's filter cap convenient to detach changes, is difficult for causing the jam of collecting the mouth, influences the smoke abatement effect.
In summary, the present application includes at least one of the following beneficial technical effects:
the exhaust fan is started, smoke can enter the purification box from the collection port, purified through the purification box and then enter the filter box for secondary filtration, and finally purified and cleaned air is pumped out through the exhaust fan, so that particles in the smoke can be conveniently recovered, and the protection of the exhaust fan is improved;
the motor is started to drive the rotating shaft to rotate, and the cleaning part cleans the interior of the filter barrel, so that the filter barrel can keep a good purification effect;
set up first filter screen and second filter screen, can further filter the particulate matter that mix with in the flue gas, improve the purifying effect to the flue gas, the filter screen of double-deck setting can further strengthen filterable effect.
Drawings
Fig. 1 is a schematic structural diagram of the whole of the embodiment of the present application.
Fig. 2 is a schematic structural diagram of a purification assembly according to an embodiment of the present application.
Fig. 3 is an enlarged schematic view of a portion a in fig. 1.
Description of reference numerals: 1. a frame; 2. a collection port; 21. a first air duct; 22. a filter cover; 3. a purification box; 31. a second air duct; 4. a filter box; 41. a third air duct; 42. an installation port; 43. a first filter screen; 431. a fixing frame; 432. a chute; 44. a second filter screen; 45. a card slot; 46. a limiting groove; 47. a movable groove; 5. an exhaust fan; 6. a purification assembly; 61. a filter vat; 62. a sealing cover; 63. a rotating shaft; 64. a cleaning part; 641. a first cleaning rod; 642. a second cleaning rod; 643. a third cleaning rod; 65. a motor; 7. mounting the component; 71. a clamping block; 72. a connecting spring; 8. an unlocking assembly; 81. a drive block; 82. and a limiting block.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses urban asphalt road maintenance vehicle is with smoke abatement device. Referring to fig. 1, a smoke abatement device for urban asphalt road maintenance vehicle comprises a frame 1 and a purification mechanism, wherein the purification mechanism is installed on the upper end face of the frame 1 and is used for purifying absorbed smoke.
Referring to fig. 1, the purification mechanism comprises a collection port 2, a purification box 3, a filter box 4 and an exhaust fan 5, a support is fixedly mounted on the frame 1, the collection port 2 is horn-shaped and fixed on the support, and a filter cover 22 is in threaded connection with the collection port 2. Purifying box 3 is fixed in frame 1 and is located one side of collecting mouthful 2, collect mouthful 2 and purifying box 3 and communicate through first guide duct 21, rose box 4 is fixed in frame 1 and is located purifying box 3 and keeps away from one side of collecting mouthful 2, purifying box 3 is linked together through second guide duct 31 with rose box 4, air exhauster 5 is fixed in frame 1 and is located one side that purifying box 3 was kept away from to rose box 4, rose box 4 is linked together through third guide duct 41 with air exhauster 5.
Referring to fig. 1 and 2, a part of the purification liquid, preferably clean water, is filled in the purification box 3, the flue gas is cooled by the clean water, so that particles in the flue gas are collected more easily, and one end of the second air guide pipe 31 is communicated with the upper end surface of the purification box 3, so that the purification liquid is not easy to enter the second air guide pipe 31. Install purification assembly 6 in purifying box 3, purification assembly 6 includes filter vat 61, sealed lid 62, pivot 63, clearance portion 64 and motor 65, a plurality of filtration pores have all been seted up to filter vat 61's week side and top, and open the setting in filter vat 61's bottom, set up the through-hole that is linked together with filter vat 61 inside in the frame 1, sealed lid 62 passes through the bolt fastening in the bottom of frame 1, and the up end of sealed lid 62 bonds and has the sealing washer, sealed lid 62 seals the bottom of filter vat 61, pivot 63 rotates and connects on sealed lid 62, and vertically stretch into in the filter vat 61, clearance portion 64 is fixed in on the lateral wall of pivot 63, be used for clearing up filter vat 61. The cleaning part 64 comprises a first cleaning rod 641, a second cleaning rod 642 and a third cleaning rod 643, the first cleaning rod 641 and the third cleaning rod 643 are fixedly connected with the side wall of the rotating shaft 63, the first cleaning rod 641 is close to the sealing cover 62, the third cleaning rod is attached to the inner top wall of the filtering barrel 61, two ends of the second cleaning rod 642 are fixedly connected with the first cleaning rod 641 and the second cleaning rod 642 respectively, one side, far away from the rotating shaft 63, of the second cleaning rod 642 is attached to the inner side wall of the filtering barrel 61, the motor 65 is fixed to the lower end face of the sealing cover 62, an output shaft of the motor 65 is fixedly connected with the lower end of the rotating shaft 63, the motor 65 is started to drive the rotating shaft 63 to rotate, the cleaning part 64 cleans the inner wall of the filtering barrel 61, and after long-term use, the collected particles can be cleaned by detaching the sealing cover 62.
Referring to fig. 2 and 3, two mounting ports 42 are formed in the upper end surface of the filter box 4 at intervals, a first filter screen 43 is mounted in one mounting port 42, a second filter screen 44 is mounted in the other mounting port 42, and the aperture of the filter holes of the first filter screen 43 is larger than that of the filter holes of the second filter screen 44. First filter screen 43 and second filter screen 44 all carry out fixed connection through installation component 7 and rose box 4, the border of first filter screen 43 and second filter screen 44 all is fixed with fixed frame 431, spout 432 has all been seted up in fixed frame 431's the relative both sides that set up, installation component 7 includes fixture block 71 and coupling spring 72, fixture block 71 sliding connection is in spout 432, the both ends of coupling spring 72 are the cell wall of fixed connection fixture block 71 and spout 432 respectively, draw-in groove 45 has all been seted up on the relative both sides wall of rose box 4, the one end and the draw-in groove 45 joint cooperation of coupling spring 72 are kept away from to fixture block 71.
Referring to fig. 3, in order to facilitate the first filter screen 43 and the second filter screen 44 to be detached for cleaning, an unlocking assembly 8 is installed on the filter box 4, a limiting groove 46 is formed in one side, away from the clamping block 71, of the clamping groove 45, a movable groove 47 is formed in one side, away from the clamping groove 45, of the limiting groove 46, the groove width of the movable groove 47 is consistent with that of the clamping groove 45, the groove width of the limiting groove 46 is larger than that of the clamping groove 45, the unlocking assembly 8 comprises a driving block 81 and a limiting block 82, the driving block 81 is slidably connected in the clamping groove 45, one end of the driving block 81 is abutted to one end, away from the connecting spring 72, of the clamping block 71, the other end of the driving block 81 extends out of the movable groove 47, the limiting block 82 is fixed on the driving block 81, and the limiting block 82 is slidably connected in the limiting groove 46.
The implementation principle of this application embodiment's smoke abatement device for urban asphalt road maintenance vehicle is: start air exhauster 5, the flue gas can be followed collection mouth 2 and is got into to purifying box 3 in, filter the granule in the flue gas through filter cap 22, the air that gets into in collecting mouth 2 can get into purifying box 3 through first guide duct 21 in, purify the back through purifying box 3, rethread second guide duct 31 gets into to filtering box 4 in, filter once more through first filter screen 43 and second filter screen 44, after through third guide duct 41, air after purifying clean will be taken out through air exhauster 5 at last, be convenient for retrieve the granule in the flue gas, the improvement is to the protection of air exhauster 5.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides an urban asphalt road maintenance vehicle is with smoke abatement device, includes frame (1), sets up the purification mechanism on frame (1), its characterized in that: the purification mechanism comprises a collection port (2) fixed on the rack (1), a purification box (3) arranged on the rack (1), a filter box (4) arranged on one side of the purification box (3) and an exhaust fan (5) arranged on one side of the filter box (4); the collecting port (2) is communicated with the purifying box (3) through a first air guide pipe (21); the purifying box (3) is communicated with the filtering box (4) through a second air guide pipe (31); the filter box (4) is communicated with the exhaust fan (5) through a third air guide pipe (41).
2. The smoke abatement device for the urban asphalt road maintenance vehicle according to claim 1, characterized in that: a purification component (6) is arranged in the purification box (3); the purification component (6) comprises a filter barrel (61) fixed on the inner bottom wall of the purification box (3); a sealing cover (62) is detachably arranged at the bottom of the frame (1) and at the bottom of the filter barrel (61); the sealing cover (62) is rotatably connected with a rotating shaft (63); the rotating shaft (63) is positioned in the filter barrel (61), and a cleaning part (64) for cleaning the filter barrel (61) is arranged in the axial direction of the rotating shaft (63); the lower end face of the sealing cover (62) is provided with a motor (65), and an output shaft of the motor (65) is fixedly connected with the rotating shaft (63).
3. The smoke abatement device for the urban asphalt road maintenance vehicle according to claim 2, characterized in that: the cleaning part (64) comprises a first cleaning rod (641) fixed with the side wall of the rotating shaft (63); the number of the first cleaning rods (641) is two and is symmetrical about the axial direction of the rotating shaft (63); a second cleaning rod (642) attached to the inner wall of the filter barrel (61) is arranged on one side, away from the rotating shaft (63), of the first cleaning rod (641); a third cleaning rod (643) is arranged at the upper end of the second cleaning rod (642), and the other end of the third cleaning rod (643) is fixed with the side wall of the rotating shaft (63); the third cleaning rod (643) is attached to the inner top wall of the filter barrel (61).
4. The smoke abatement device for the urban asphalt road maintenance vehicle according to claim 1, characterized in that: a first filter screen (43) and a second filter screen (44) which is arranged at an interval with the first filter screen (43) are arranged in the filter box (4); the aperture of the filtering hole of the first filter screen (43) is larger than that of the filtering hole of the second filter screen (44).
5. The smoke abatement device for the urban asphalt road maintenance vehicle according to claim 4, wherein: the upper end surface of the filter box (4) is provided with two mounting ports (42) which are arranged at intervals; the first filter screen (43) and the second filter screen (44) are respectively inserted into the two mounting openings (42); the filter box (4) is provided with a mounting assembly (7) for fixing a first filter screen (43) and a second filter screen (44).
6. The smoke abatement apparatus for urban asphalt road maintenance vehicles according to claim 5, wherein: the edges of the first filter screen (43) and the second filter screen (44) are provided with fixing frames (431); sliding grooves (432) are formed in the two sides of the fixing frame (431); the mounting assembly (7) comprises a fixture block (71) which is connected in the sliding groove (432) in a sliding manner and a connecting spring (72) which is connected with the fixture block (71) and the groove wall of the sliding groove (432); and clamping grooves (45) which are matched with the clamping blocks (71) in a clamping manner are formed in two opposite side walls of the filter box (4).
7. The smoke abatement device for the urban asphalt road maintenance vehicle according to claim 6, wherein: an unlocking assembly (8) is arranged on the filter box (4); a limiting groove (46) with the groove width larger than that of the clamping groove (45) is formed in one side, away from the clamping block (71), of the clamping groove (45); a movable groove (47) is formed in one side, far away from the clamping groove (45), of the limiting groove (46); the width of the movable groove (47) is consistent with that of the clamping groove (45); the unlocking assembly (8) comprises a driving block (81) connected in the clamping groove (45) in a sliding mode and a limiting block (82) arranged on the driving block (81); the limiting block (82) is arranged in the limiting groove (46) in a sliding manner; one end of the driving block (81) is abutted against one end of the clamping block (71), and the other end of the driving block (81) extends out of the movable groove (47).
8. The smoke abatement device for the urban asphalt road maintenance vehicle according to claim 1, characterized in that: collect mouthful (2) and be the horn mouth form, and collect mouthful (2) and go up threaded connection and have filter lid (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120220262.4U CN214486249U (en) | 2021-01-25 | 2021-01-25 | Smoke removal device for urban asphalt road maintenance vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120220262.4U CN214486249U (en) | 2021-01-25 | 2021-01-25 | Smoke removal device for urban asphalt road maintenance vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214486249U true CN214486249U (en) | 2021-10-26 |
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ID=78217133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120220262.4U Expired - Fee Related CN214486249U (en) | 2021-01-25 | 2021-01-25 | Smoke removal device for urban asphalt road maintenance vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214486249U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117771869A (en) * | 2024-02-27 | 2024-03-29 | 江阴市鑫海公路机械材料有限公司 | Asphalt smoke treatment device for crack-resistant asphalt highway construction |
-
2021
- 2021-01-25 CN CN202120220262.4U patent/CN214486249U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117771869A (en) * | 2024-02-27 | 2024-03-29 | 江阴市鑫海公路机械材料有限公司 | Asphalt smoke treatment device for crack-resistant asphalt highway construction |
| CN117771869B (en) * | 2024-02-27 | 2024-04-26 | 江阴市鑫海公路机械材料有限公司 | Asphalt smoke treatment device for crack-resistant asphalt highway construction |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211026 |
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| CF01 | Termination of patent right due to non-payment of annual fee |