How to control the gas dust of the wood furniture factory
Furniture factories produce large quantities of sawdust and wood flour during wood cutting, surface processing, sanding and trimming. How to control the gas dust of the wood furniture factory? INDRO filtration-filter bag manufacturer introduce you about it.
Furniture factories produce large quantities of sawdust and wood flour during wood cutting, surface processing, sanding and trimming. If the particle size of dust is above 2.5um, it can be blocked by the internal cavity of the nasal cavity and the sputum in the respiratory tract, and the harm to the human body is not very large. But if the size of the particle is below 2.5um, the diameter of the fine particles is equivalent to the size of the 1/10 in the hair. It will directly enter the bronchus and lungs after being inhaled, causing diseases such as asthma, bronchitis and heart disease. The dust in furniture factories just contains such fine particles, which is very harmful to health. The wood dust also contains a certain amount of wood tar. The wood tar contains a variety of acids, organic enzymes, phenols, hydrocarbons and carcinogens, benzo (a) pyrene, and contains more carcinogenic substances. These substances enter the blood through the bronchi and alveoli, dissolve in the blood and harm the health of the human body more.
Moreover, it is explosive. Once the dust is too high and the temperature reaches the burst point, it will cause an explosion and the consequences will be unthinkable.
To control dust pollution, we must start from the fundamental point. The most effective measure at present is to select advanced and reasonable bag filter. The bag type dust collector should take into account the size of the operation site, the degree of purification required by the bag dust collector, the nature of the dust of the bag dust collector and the dust removal environment. It is not difficult to collect the large wood dust and the medium-sized wood dust in time.
But for the most dangerous kinds of fine wood dust, the fine particles will adhere to the surface of the equipment and the workpiece, causing the fault of the bag dust collector and even causing the safety accident. At present, the most effective method of dust removal is cyclone and pulse bag filter.
The cyclone pulse jet bag filter is a combined bag filter with a dual function of cyclone separation and cloth bag rate.
The cyclone pulse jet bag filter can handle high concentration of mixed air with small particle size. There is no running parts in the bag filter, so it is very convenient to maintain. The cyclone pulse bag filter has high efficiency of ash removal and reasonable cleaning parameters. Cyclone and pulse jet bag filter not only save energy consumption, but also extend the life of dust filter bags. Compared with the general two stage dust removal system, the cyclone pulse jet bag filter has the characteristics of reasonable structure, small area, reducing the total resistance of the system, low energy consumption and less investment.
The wood dust is pumped into the cyclone through the dust pipe, and the centrifugal force is used to rotate it in the cyclone bag dust collector, and the large particle dust is naturally settled from the inner wall by the function of the gravity force. The remaining powder dust, which is not collected, is then sent to the pulse bag dust collector under the action of the centrifugal fan, and the dust is separated by the filter collection of the cloth bag in the bag dust collector. The dust adhering to the outer surface of the bag is blown down by the air pressure gas of the pulse electromagnetic valve of the cyclone and the pulse bag filter. The dust is removed to the cyclone and the dust bag of the pulse bag filter without manual treatment. The flue gas treated by cyclone pulse bag filter can meet the gas emission standard.
Some people in the industry will worry that the amount of dust in the bag filter can cause the explosion and the fire. The furniture factory is most afraid of this, but installing or detecting the extinguishing device in the pipe will increase a part of the cost. In fact, the dust explosion needs to reach the limit of concentration and reach the ignition point. As long as we clean up the dust bucket of the bag filter and pay attention to the air temperature, we can prevent explosion and fire.