Boring head with new protection hood

Details Boring head with new protection hood Boring head with new protection hood

E - Fixed Constructions

21

B

E21B 21/015 (2006.01)

Patent

CA 2656632

The invention is a new boring head (T) for boring machines, with couplings or drive units (Tl, T2) for the rotation-translation of at least one boring rod and of at least one covering tube that are coaxial and hollow to allow the passage of pressurized water/air and the upward flow of the waste fluid consisting of water/air mixed with debris along the interspace defined between said rod and said covering tube, comprising a protection screen or wall (Cp) completely enveloping said rod and said covering tube, suited to be positioned near or at the level of the upper annular opening of said interspace, out of which said waste fluid flows, in such as way as to intercept said waste fluid in all directions and to convey it downwards.

L'invention porte sur une nouvelle tête de sondage (T) pour foreuse, qui comprend des raccords ou des unités d'entraînement (T1, T2) permettant la rotation et la translation d'au moins une tige de sonde et d'au moins un tube de revêtement qui sont coaxiaux et creux afin de permettre le passage d'eau ou d'air sous pression et l'écoulement vers le haut de déchets liquides composés d'eau ou d'air mélangés à des débris, le long d'un espace intercalaire défini entre ladite tige et ledit tube de revêtement, laquelle tête de sondage comprend un écran ou une paroi de protection (Cp) qui enveloppe complètement la tige et le tube de revêtement, qui est apte à être placée à proximité ou au niveau de l'ouverture annulaire supérieure de l'espace intercalaire de laquelle s'écoulent les déchets liquides, de manière à intercepter lesdits déchets liquides dans toutes les directions et à les transférer vers le bas.

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