30 days' delivering time asphalt batching plant with 30T container type diesel and bitumen tank
15. Mixer
A. Summarization
Double axial forcible mixer, matched with asphalt metering and spraying system, can mix asphalt high effectively. It can produce well-proportioned mixture in shortest time, even for the highest-requisite ration.
The mixer axles are supported by 2-tiers roller bearing. Pressure-cover model airproof is used, so as to avoid asphalt exuding.
Paddles are installed on axles. On the end of each paddle, there is exchangeable- and-wearable vane, which can also be adjusted to compensate abrasion. The paddles are designed to protect bolts from abrading. The disposal and shape of vanes can make the material blended perfectly.
The wall of discharging door is mounted with wearable scaleboard.
The mixer axles are drived by electromotor through reducer.
B. Original check
Before running, check the mixer carefully for bolt-loose, sundries in mixer or driving system, location of axle, and lubrication.
After running several hours, it is suggested to recheck all bolts, and often carry through this process according to experience.
C. Operation
Within the ability of mixer, it can get most effective performance. If the load is beyond its ability, insufficiency mixing or driver parts damage may occur.
After first check, discharge hot aggregate to mixer, and during original running, it is suggested that not make it run full-load until the of vanes surface have been polished. Same, it is also suggested to mix hot aggregate more time in every beginning, especially when the environment temperature is low.
Notice
The more dry aggregate is, the more abrasive will occur, and the added asphalt will act as lubrication.
In common, discharge aggregate from weighing hopper firstly, then discharge asphalt, filler and other additive in turn. Spray asphalt with some pressure will improve its equality in mixture remarkably, and also shorten mixing time. After mixed thoroughly, keep emptying door open enough time (air cylinder control), so as to empty all mixture fully.
After everyday production, be sure to clean up mixer, and discharge some dry aggregate to mix and clean is ok.
| Maintenance of mixing tank |
| (1),Summarization |
Shut off all start buttons and power before maintenance. If maintenance is being carried on in mixer, be sure to arrange special person to guard in control house after shutting off power. |
| (2),Scaleboard |
The whole wall of mixer is installed with wearable scaleboards, which need to be checked periodically for firmness, replace the weared-out scaleboard in time.
The scaleboard near emptying door is connected to body with long-slot mode, so as to compensate for abrasion and keep airtight. This position needs to be checked often. The clearance is set within 3mm.
The airtight at mixer axle could prevent asphalt or filler from leaking, and graphite bars are installed between two airtight faces. Screwing down bolts can make the airtight material impact mixer body. Adjust bolts periodically to ensure compaction. In addition, add graphite bars if necessary.
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| ⑶. Paddle and vane |
Mixing paddles are installed on axle in couples. High-efficiency mixing could be achieved through paddles running. The paddles and vanes run according to certain state.
Vanes are installed on mixing paddles with bolts, which can be adjusted and replaced if abraded. Check and adjust vanes periodically to ensure the 3-to-5mm clearance between vanes and scaleboards. Adjustment not done, mixer will be damaged under high-efficiency serving, or material leaks out. It is necessary to adjust and clean up clearances, and replace vanes in time.
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⑷. Synchromesh gears
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Synchromesh means nonoccurrence of vane bumping when paddles run. The gears are very important in assembly. The relative state of vane-to-vane is settled face to face. |
| ⑸. Detail check |
check gears for lubrication |
| check vanes-fastness bolts. |
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