The ZC mechanical blowback bag dust collector produced by Huakang has the advantages of high efficiency, low resistance, simple maintenance, and reliable operation. It is suitable for the process recovery and dust removal purification of fine dust, and the emission concentration can be much lower than the regulations in China.

Construction of ZC Mechanical Backblowing Bag Dust Collector

1. Upper box: including dust collector cover, rotating cover removal device, cleaning room, bag changing inlet, observation hole, and air outlet.

2. Medium box body: including flower board, filter bag, filter bag frame, filter bag guide, filter chamber cylinder, air inlet, and inlet door.

3. Lower box: including positioning support frame, ash hopper, star shaped ash discharge valve, and support.

4. Anti blowing dust cleaning structure: including rotary arm, nozzle, segmented anti blowing structure, circulating air duct, anti blowing pipe, anti blowing machine, and rotary arm deceleration structure.

The anti blowing rotary arm is driven by a reducer placed on the top cover. The anti blowing machine is installed on the ground and connected to the rotary arm through a central pipe. For filter bags arranged in three or four circles, the rotary arm is equipped with a segmented anti blowing device. The star shaped ash discharge valve, reduction device and motor, reverse blower, rotary arm reduction structure, and circulating air pipeline are all accessories. According to user requirements, it can be equipped on behalf of others. The platform and ladder are not shown in the series of final assembly drawings. They, along with the foundation and circulating air duct of the anti blower, should be designed and installed according to the specific situation on site.

Working Principle of ZC Mechanical Backblowing Bag Dust Collector

Filtering condition - The dusty airflow enters the upper space of the filtering chamber tangentially, due to the volute shaped inlet. Large particles and aggregated dust particles spin down the ash hopper along the cylinder wall under centrifugal force. Small particle dust disperses in the gaps between the filter bags in the filtration chamber and is retained by the filter bags. Adhering to the outer layer of the filter bag, purified air passes through the filter wall and collects through the filter bag guide on the flower plate in the clean room, and is sucked out by the ventilation fan and discharged into the atmosphere.

Working conditions - As the filtration process progresses, the retained dust gradually thickens, resulting in an increase in the resistance of the filter bag. When the upper limit of the anti blowing control resistance is reached, the anti blowing machine can be manually turned on as needed, or the differential pressure transmitter can send a signal to automatically start the anti blowing machine and the anti blowing rotary arm transmission structure for anti blowing. Our company can also provide supporting automatic control devices. A counter blowing airflow with sufficient momentum is blown into the filter bag inlet through the rotary arm nozzle, blocking the filtered airflow and changing the pressure conditions inside the bag, causing substantial vibration of the filter bag and shaking off accumulated dust. Rotate the arm in turns and blow back one by one. When the resistance of the filter bag drops to the lower limit, the anti blowing structure manually closes or automatically stops working. In order to save the power of the anti blowing machine and reduce the anti blowing air volume, the three and four circle (i.e. 144ZC-II20ZC - type) bag filter is equipped with a segmented anti blowing structure, so that only one filter bag is blown back each time.

Main features of ZC mechanical blowback bag dust collector

Compared with the commonly used pulse bag dust collector in China, the rotary back blowing flat bag dust collector has the following characteristics:

1. The shell is designed with a cyclone dust collector volute inlet, which can play a local cyclone role and reduce the load on the filter bag. The shape of the cylindrical dome is uniform in force and has good blast resistance.

2. The high-pressure fan equipped with the equipment is used for reverse blowing dust cleaning, which is not limited by the air source conditions of the usage site, has fewer vulnerable parts, is easy to maintain, operates reliably, overcomes the disadvantages of compressed air pulse dust cleaning, has a large reverse blowing distance, can use long filter bags, fully utilizes space, and occupies a small area.

3. The ladder shaped flat bags are arranged inside the cylindrical body, with a simple and compact structure, and the filtration area refers to the elevation. Under the action of counter blowing, the trapezoidal flat bag has a large amplitude, and only one vibration is needed to shake off the accumulated dust, which is beneficial for improving the service life of the filter bag.

4. Using the resistance of the dust collector as a signal, it can automatically control the rotation back blowing to clean the dust, and adjust the cleaning cycle automatically depending on the inlet concentration.

5. The upper cover of this device is divided into multiple pieces and can be opened freely, making bag replacement and maintenance very convenient.

After several designs, the inlet concentration of this device does not need to be limited to 15 grams/m3. Even if it is 150 grams/m3, there is no need to add a cyclone dust collector. This device has the function of a cyclone dust collector, but there is no resistance from the cyclone dust collector. Although this device increases the cost, the selling price will not increase.

7. Except in cold regions, this dust collector can be installed outdoors without the need to build a dust collector room.

Performance of ZC Mechanical Backblowing Bag Dust Collector

Case Study of ZC Mechanical Backblowing Bag Dust Collector

Customer situation: A stone material factory in Shanxi has a set of crushing equipment, including two jaw crushers, two vibrating screens, and four magnetic grinders. There is no dust removal equipment, so a lot of dust is generated during the production process. In order to reduce pollution and improve the working environment, effective dust removal equipment is installed on the crushing and screening equipment.

Usage effect: Since the use of ZC mechanical blowback bag dust collector for one year, the performance of the equipment has been relatively stable, the workplace of workers has been improved, and the dust collected by the dust collector has created economic value for the company.