Industrial dust collectors PVM
Dust collectors of the PVM class are units for cleaning the air removed by ventilation exhaust systems from all dust inclusions of medium and fine fractions, including fire-hazardous, explosive, polymeric, fibrous.
Marking of the PVM class dust collector
«PVM - 10СА», «PVM - 10кб», «PVM - 10Б», «PVM - 10СКМА», where:
- «П» - dust collector;
- «В» - ventilation;
- «М» - wet;
- «10» - dust collector number corresponding to a capacity of 10,000 m3/h;
- «SA» - presence of a sludge discharge system;
- «KB» - presence of a scraper sludge discharge mechanism;
- «B» - presence of side sludge discharge pockets;
- «KMA» - capture of zinc and aluminum dust, presence of a scraper sludge discharge mechanism.
Design advantages
The metal housing of PVM class dust collectors consists of lower and upper zones - sections. In the first of them, partially filled with water, two partitions form a channel. Dust collectors are equipped with sensors - level switches. Their task is to perform an emergency stop of the fan when the water level drops below the limit value. The performance of the models of dust collectors of the PVM class varies from 3000 to 40000 m3/h, the length of the dust collector is 1315 ÷ 4385 millimeters, the height of the dust collector is 3185 ÷ 5010 millimeters. The efficiency of cleaning dusty air reaches 99%.
Operating principle
Due to the discharge created by the fan, the contaminated air enters the unit, bypassing the inlet. Then, at high speed, the air flow rapidly passes through the slotted hole between the lower side of the partition and the water surface, carrying it with it. The latter is directed by drop deflectors for draining into the outer compartments. The air freed from foreign particles is directed through the droplet traps and discharged to the outside by a fan. The removal of accumulated sludge is carried out in the «SA» series by means of a drain through a valve, in the «KB» and «KMA» series - by means of a scraper mechanism, in the «B» series - by means of a drain into a pocket.
Advantages
- versatility;
- high efficiency;
- simplicity of design.
Field of application
In the premises of production of categories B and D, where explosive dust of animal and plant origin is removed from workplaces using local suction devices, recirculation of air already cleaned in a dust collector of class PVM is allowed. The exception is rooms in which the air contains substances of 1 ÷ 3 hazard classes (GOST 12.1.005 - 88) that exclude the possibility of air recirculation, and the air contains viruses, fungi, bacteria and unpleasant odors.
Operation features
PVM class dust collectors should not be used to capture dust contaminants that can form strong conglomerates when interacting with water (cementation, crystallization, coagulation). If the initial dust concentration in the air is more than 10 g/m3, then a PVM class dust collector is recommended to be used as a second stage after a dry standard dust collector in order to reduce both the amount of sludge and water consumption.
