Blast system

Details Blast system Blast system

1995-12-18

2000-03-14

Rose, Robert A.

Abrading

Machine

Sandblast

451102, B24C 700

Patent

active

060365846

ABSTRACT:
A blast system for processing components by means of abrasive particles, comprising a hopper (1) for abrasive particles (2), a mixing device (3) formed by a mixing chamber (9) into which an HP-air pipe (10) issues and which in its turn issues into a blast pipe (11), a transport line (5) between the hopper and the mixing chamber, through which line the abrasive particles are transported from the hopper to the mixing chamber, means (6) for generating HP-air (P) which is supplied to the mixing chamber through the HP-air pipe for obtaining a mixture of air and abrasive particles issuing from the blast pipe, and a transport mechanism (4) for transporting the abrasive particles through the transport line. To obtain an energy-efficient system suitable for mass manufacture, the invention is characterized in that the system operates at an absolute pressure (P) of the HP-air of between 2 and 4.5 bar, while a ratio d.sub.1 /d.sub.2 of a smallest diameter d.sub.1 of the HP-air pipe issuing into the mixing chamber to a smallest diameter d.sub.2 of the blast pipe lies between 0.6 and 0.9, while P<13.25-12.5 d.sub.1 /d.sub.2))).

REFERENCES:
patent: 2696049 (1954-12-01), Black
patent: 3139705 (1964-07-01), Histed
patent: 3425166 (1969-02-01), Best et al.
patent: 4067150 (1978-01-01), Merrigan
patent: 4482322 (1984-11-01), Hain et al.

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