The long bag offline pulse dust collector is composed of a shell, ash hopper and ash unloading mechanism, inlet and outlet air box body, pulse cleaning device, compressed air pipeline and its pressure reducing device, ladder platform and railing. The products produced by our company are cheap in price, stable in quality, and deeply loved by users.
【 Working Principle 】
When the long bag offline pulse dust collector is working, the dust containing gas will enter the dust collector from the middle box, and then it will move downwards. During the flow process, it will be filtered by the bag, and the dust will be trapped outside the filter bag. The purified air will then be collected by the clean air box on the bag, and the clean air will be discharged from the air outlet. After the dust collector filters the dusty gas for a certain period of time, the dust resistance on the outer surface of the dust collector bag will gradually increase. It will determine the cleaning time based on the actual measurement situation. When the long bag low-pressure pulse dust collector is working, it will use a pulse controller to send signal instructions, and then the lift valve of each chamber will start to close. After cutting off the filtered airflow, the pulse valve of the chamber will open, and compressed air greater than 0.4MPa will be injected into the clean air chamber to remove the dust on the filter bag. After the dust collector completes this dust removal action, the lift valve will reopen. Then our bag filter equipment will perform continuous dust removal and cleaning according to the above procedure.
[Structural Features]
1. The long bag offline pulse dust collector is mainly composed of a box body, ash hopper, inlet air equalizing pipe, outlet air pipe, bracket, filter bag and blowing device, ash unloading device, etc. It adopts a thin plate type lifting valve to achieve offline three states and clean dust.
2. The inlet uniform flow pipe and ash hopper diversion technology of the long bag offline pulse dust collector solve the problem of uneven airflow in each compartment that is commonly caused by general bag dust collectors.
3. The bag structure of the long bag offline pulse dust collector has various structural forms (octagonal, circular, etc.) according to different working conditions. Changing the filter bag is simple.
4. The upper end of the long bag offline pulse dust collector filter bag adopts a spring expansion ring form, which is well sealed; The standard length for repairing and replacing the bag cage is 6m, and it can be increased by 1-2m as needed.
5. The service life of the vulnerable part membrane of the electromagnetic pulse valve in the long bag offline pulse dust collector is greater than 1 million times. The dust collector can be controlled by a programmable controller, which has three control modes: differential pressure, timing, and manual. It can achieve system control of the offline network, pulse valve, and ash discharge room of the dust collector.
The dusty gas in the long bag offline pulse dust collector is introduced from the lower part of the middle box and guided by the baffle to the upper part of the middle box to enter the filter bag. The clean air is discharged from the upper box.
The dust cleaning device is equipped with a straight through pulse valve with a diameter of 80mm, which is suitable for speed. Its structure and size have been selected through extensive testing, and it has a reasonably designed throttling channel and pressure relief channel, low self resistance, and opening and closing performance. Therefore, it can release a large amount of compressed gas in a shorter time, and the dust cleaning effect is good.
The connection between the pulse valve and the spray pipe adopts a plug-in method. The spray pipe is equipped with nozzles with varying aperture sizes, aimed at the center of each filter bag. The bag mouth does not have an injector, so it is called a "direct pulse".
The pulse valve has a spraying time of 65-85ms each time, which is shorter than the traditional pulse cleaning method and can produce stronger cleaning ability. Dust cleaning generally adopts a constant pressure difference control method, or a timed control method. The diameter of the filter bag is 120-130mm and the length is 6m. According to the needs, the diameter of the filter bag can be expanded to 150-160mm and the length can be extended to 8m.
Long bag offline pulse dust collector is a type of equipment that uses elastic expansion rings to fix filter bags. By relying on the elastic expansion ring and saddle shaped pad installed at the bag mouth, the filter bag is embedded into the bag hole of the flower board. When changing the bag, flatten the bag opening into a "concave" shape, and insert the dust containing filter bag into the ash hopper through the bag hole. After all the dust containing filter bags are inserted into the ash hopper, they are collected and removed through the inspection door of the ash hopper. When installing the filter bag, first place the bottom and middle of the filter bag into the bag holes of the flower board. When the bag mouth is close to the flower board, flatten the bag mouth into a "concave" shape, and press the groove formed by the saddle pad tightly against the edge of the flower board bag hole. Then gradually release it, and the bag mouth will return to a circular shape, fully embedded in the bag holes of the flower board.
The filter bag frame is directly supported on the flower board. When installing the filter bag, after the clean filter bag is fixed in place, insert the frame into the filter bag, install the spray pipe, and close the upper cover.