In the process of using the sand blasting machine, in order to better meet the requirements of use, many users are not clear about the specific operation and purpose of the local air pumping of the equipment, so the corresponding operation is introduced next, in order to better meet the use requirements.
The sand blasting machine (room) must be equipped with local ventilation. Workers operate outside the equipment, sandblasting is carried out in a closed room. The determination of air pumping volume is based on the principle that the dust can be pumped away and the surface of the parts can be seen clearly when sandblasting is carried out. The air pumping volume can generally be calculated according to the wind speed of the section area of the equipment indoors at 0.3-0.7 m/s. The section area is determined according to the direction of air flow. The selection of section wind speed should consider the sealing degree of the equipment, the size of the nozzle, the size of the sand blasting chamber and other factors. Generally, the cross section wind speed of large sandblasting chamber adopts smaller value, and the cross section wind speed of small sandblasting chamber adopts larger value. Equipment) according to the indoor volume consideration of the approximate extraction air volume is listed.
The dust extracted from the equipment needs to be removed and purified into the atmosphere. It is necessary to avoid environmental pollution and dust gas entering other workshops of the workshop due to improper dust removal.
Local draught of polishing and polishing machine
A large amount of metal dust and fibrous dust are produced in the polishing and polishing of metal parts, which need to be eliminated by local ventilation. Dust removal is required before discharge into the atmosphere.
The spray painting of parts is generally carried out in the spray room, and a local air pumping device with water shower filtration or dry filtration should be set up so that the paint mist does not escape from the working orifice into the room.
The rust removal and paint work of small parts can be carried out in the workbench or fume hood with local air extraction, and the air extraction volume is 0 according to the wind speed of the air inlet working orifice section. It’s calculated in meters per second.
Sand blasting machine (room) dip paint groove and drop paint tray need local air pumping, air pumping can be used side suction or fume hood type.
The above is the introduction of the local air pumping operation of the sand blasting machine. According to its introduction, the specific methods of operation can be more clearly understood, so as to avoid errors and lead to the occurrence of the influence of the use of equipment.
Post time: Jan-11-2023
