Crusher dust collector
Selection of crusher dust collector Due to the impact, extrusion, friction and other mechanical effects when the crusher is working, some heat energy can increase the temperature of the powder, but the change will not be too big. Ordinary polyester needle felt can be used as the Pulse bag dust collector with dust bags. The shell does not need to be insulated. Due to the fine particle size of the impact crusher product and the disturbance of the high-speed air flow in the machine, the dust concentration of the gas entering the dust collector can reach Pressure crusher to avoid causing fine dust to pass through the bag.
Dust generated when the dust collector of the crusher is working. When the dust enters the dust collector, since the equipment shell is round, it will continue to rotate along the shell after entering tangentially, which is unique. The centrifugal force will bring large particles of dust into the ash hopper, while a small part of the dust will rise and be adsorbed on the surface of the filter bag under the action of negative pressure. When the preset cleaning time is reached, the high-pressure back blower will automatically turn on ( According to the on-site working conditions, pure air from the clean air chamber of the upper box of the dust removal equipment is introduced for dust cleaning.
The crusher dust collector uses a centrifugal fan to generate a negative pressure area at the dust sealing cover, sucking the dust into the dust removal equipment, and pulses There is a dust bag inside the bag dust collector. When the dust-containing gas passes through the filter bag, the dust is blocked and separated, and the purified gas is discharged through the fan. The dust on the surface of the filter bag is blown by an electromagnetic pulse valve to make it fall off the filter bag and compress it. The air blowing is automatically controlled and does not require human control, which is a major feature of it.
Crusher dust collector structure
) The upper box includes a dust collector cover, a rotating lid-opening device, and a clean room , bag changing inlet, observation hole, air outlet after purification.
) The box body includes a flower board, filter bag, filter bag frame, filter bag guide, filter chamber cylinder, dust-containing gas inlet, Entry orifice.
)The lower box includes a positioning support frame, an ash hopper, a star-shaped ash discharge valve, and a support.
) The back-blowing dust cleaning mechanism includes a spiral arm, a blowing mouth, a circle back-blowing mechanism, a circulating air duct, a back-blowing air duct, a back-blowing fan, and a spiral arm deceleration mechanism.
The back-blowing arm is driven by the reducer placed on the top cover. The back-blowing fan is installed on the top cover and connected to the spiral arm through the central tube. For filter bags and spiral arms arranged in three or four circles, a divided circle backflush device is provided.
The comprehensive dust control technology for mining dust removal is mainly spray dust removal. According to the characteristics of the dust source, wet dust prevention measures such as shower dust suppression, spray dust suppression, and covering dust prevention are adopted. In frozen and water-scarce areas, when wet dustproofing is unconditionally used or cannot meet the required standards after wet dustproofing, mechanical dust removal or a comprehensive method of mechanical dust removal and wet dustproofing at the same time must be used. Mechanical dust removal equipment must be suitable for the characteristics of the mine and must be simple in structure, small and compact, easy to move, moisture-proof and durable. When comprehensive dust prevention measures in each working process still fail to meet the requirements, personal protection needs to be taken.
) Rock drilling dustproof. Priority is given to wet rock drilling with high dust removal efficiency. When wet rock drilling conditions are not available, dry dust-catching rock drilling can be used. Dry dust-catching rock drilling can be divided into two forms: using a dust hood to extract dust at the rock drilling mouth or extracting dust at the bottom of the hole. When it is not appropriate to use a large amount of water, foam dust removal can be used, that is, the foam is pressed into the bottom of the hole or sprayed at the hole opening, or the dust-laden air is introduced into a foam dust collector for purification.
) Blasting and dustproof. The largest amount of dust is produced when blasting ore, and the dust production time is concentrated. The main dust prevention measures include spraying water and water seal blasting. Spraying water often uses blasting waves to activate sprayers, purified water curtains, and water-wind injectors.
)Shipping is dustproof. Ore stacking, rock loading machines, loaders, scrapers, mine cars, belt conveyors, and slide shaft loading, loading and other operations all produce a large amount of dust. Measures such as spraying water, airtight ventilation, etc. can be used to prevent dust dispersion.
) Broken and dustproof. For the dust generated by various crushing equipment during operation, wet dust prevention and mechanical dust removal combined with dust removal measures can be adopted based on the sealing of the equipment. The purification equipment for mechanical dust removal adopts bag dust collector or wet dust collector. Wet dust collectors should be used for dust removal in underground crushing chambers. When the exhaust air from the dust removal system cannot be discharged to the return air tunnel or the ground, but can only be discharged locally, the exhaust air must be processed by a high-efficiency filter.
)Perforated dustproof. A large amount of dust is generated when drilling rigs in open pit mines operate. Measures such as wet rock drilling with mixed wind and water inside the borehole, dry dust capture outside the hole, and wet dust capture can be adopted. Due to the high initial dust concentration, dry dust collection outside the hole requires two-stage purification using a cyclone dust collector and a bag dust collector.
Crusher dust collector | Crusher dust removal equipment