Apparatus for applying a retroreflective microspherical particles in an electrostatic field

摘要

The invention relates to the technology of applying coatings to articles surface in an electrostatic field, for the manufacture of information signs, such as road signs and reflectors information indicator board vehicles and to improve the flow rate of the particle flux, product quality and to increase its durability. The apparatus comprises a housing (1) with handle (2), a hopper (3) to load the microspheres, the barrel (4) with a channel (5) for the flow of microspherical particles and voltage multiplier (6) from the discharge electrode (7) The spray rassadok fixed the output of the barrel pipe (4) and comprises a cylindrical housing (8) with a conical portion at the outlet, wherein the series in the flow direction, are arranged the central channel (9) with a closed end at the outlet and the inlet communicating with the channel (5) flow microspheroidal particles annular cylindrical anal (10) passing to the outlet in the annular conical channel (11) formed, respectively, coaxially with the housing (8) is situated a cylindrical sleeve (12) and the conical reflector (13) at the output. The channel (9) communicates with the channel (10) at its input through the tangential holes (14) on the circumferential surface of the cylindrical sleeve (12). By forming the conical reflector (13) are grooves (15) for the orderly movement of the microparticles through an annular conical channel (11) to the product, also under the influence of air ejected through a series of holes (16) and (17) in the housing (8). The channel (9) at the inlet to the spray nozzle has a tapered portion on the direction of flow (1) 8, and on the end surface of the channel (9) has a conical divider (19). 1 z.p.f BACKGROUND 4 Fig.