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    • 1. 发明公开
    • APPARATUS FOR SPRAYING AN ABRASIVE MIXTURE TOWARDS A DELICATE SURFACE FOR REMOVING WRITINGS, DRAWINGS OR GRAFFITI THEREFROM
    • 用于喷涂研磨混合物的装置在精美的表面上用于去除书写,图纸或其它的图案
    • EP3300836A1
    • 2018-04-04
    • EP17193107.4
    • 2017-09-26
    • CRISTANINI S.P.A.
    • CRISTANINI, Adolfo
    • B24C7/00B05B7/14
    • B05B7/149B05B7/1445B05B7/1463B24C3/32B24C5/04B24C7/0046
    • An apparatus manually transportable by an operator for spraying an abrasive mixture (M) for removing writings, drawings or graffiti therefrom, towards a delicate surface (S). The apparatus can be used with means (5) for supplying air (G) and second means (7) for supplying water (H) and comprising an inlet port (15) fluidically connectable with the first air inlet means (5), at least one tank (21) for an abrasive powder (A), a first Venturi effect mixing chamber (31) having an outlet (34) for a first air (G) - abrasive powder (A) mixture. The apparatus further comprises at least one spray lance (51) manually operable by the operator, the apparatus comprising a second mixing chamber (55) having a third inlet (56) fluidically connected with the first outlet (34) for the inflow of the air (G) - abrasive powder (A) mixture, a fourth inlet (57) fluidically connectable with the second means (7) for supplying water (H) and an outlet (58) for the abrasive mixture (M) formed by water (H) and by the first air (G) - abrasive powder (A) mixture. The spray lance (51) further comprises at least one outlet nozzle (59) fluidically connected with the outlet (58) of the second mixing chamber (55) to spray the abrasive mixture (M) towards the delicate surface (S). In particular, the second mixing chamber (55) is arranged in the proximity of the outlet nozzle (59) so as to prevent the abrasive mixture (M) from depositing upstream of the second mixing chamber (55).
    • 一种可由操作人员手动运送的设备,用于将磨料混合物(M)喷射到精密表面(S)上,用于从其上去除文字,图画或涂鸦。 该设备可与用于供应空气(G)的装置(5)和用于供应水(H)的第二装置(7)一起使用并且包括可与第一空气入口装置(5)流体连接的入口端口(15) 一个用于研磨粉(A)的罐(21),一个具有用于第一空气(G) - 磨料粉(A)混合物的出口(34)的第一文丘里效应混合室(31)。 该设备还包括至少一个可由操作者手动操作的喷枪(51),该设备包括第二混合室(55),该第二混合室具有与第一出口(34)流体连接的第三入口(56),用于空气的流入 (G) - 磨料粉末(A)混合物,与用于供应水(H)的第二装置(7)流体连通的第四入口(57)和由水形成的研磨混合物(M)的出口(58) )和第一空气(G) - 磨料粉(A)混合物。 喷枪(51)还包括与第二混合室(55)的出口(58)流体连接的至少一个出口喷嘴(59)以朝向脆弱表面(S)喷射磨料混合物(M)。 特别地,第二混合室(55)布置在出口喷嘴(59)的附近,以防止磨料混合物(M)沉积在第二混合室(55)的上游。