US 4,163,582 AGranted

Pneumatic stowing apparatus

AssigneeBergwerksverband GmbH

InventorKurt H. Voss

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Abstract

A pneumatic stowing apparatus for use in underground mine galleries for pneumatically transporting mine waste resulting from blasting operations, mainly comprises a housing in which an element forming at least one chamber is movable between a material receiving position in which such mine waste is filled through an inlet opening in the housing into the chamber and a material-discharging position in which opposite open ends of the chamber are respectively aligned with openings in opposite end walls of the housing, through one of which compressed air is blown over a valve into the chamber so that the mine waste in the latter is transported to a point of use through a discharge conduit connected to the opening in the opposite end wall of the housing, a motor to move the chamber forming element between the positions thereof, and a member for opening and closing the valve in timed sequence with the movement of the chamber forming element.

Claims15

Dependent claims

A pneumatic stowing apparatus, especially for filling up dams in an underground mine gallery by blowing rough mine waste resulting from blasting operations during advance of a mine gallery by means of compressed air to a point of use, said apparatus comprising a substantially closed housing having a top wall provided with an inlet opening and a pair of end walls each provided with at least one opening aligned with the opening in the other end wall;

at least one discharge conduit communicating with the interior of said housing through the opening provided in one of the end walls thereof;
means forming at least one elongated chamber having opposite open ends adjacent to the end walls of said housing and being movable in the interior of said housing between a material receiving position in which said chamber is aligned with said inlet opening to receive mine waste passing through said inlet opening and a discharge position in which said opposite open ends are respectively aligned with said openings in said end walls;
means connected to said chamber forming means to move the latter between said positions thereof;
and means for blowing off mine waste out of said chamber into said discharge conduit to be transported through the latter to a point of use, said blowing-off means including an air accumulator for accumulating compressed air, an air conduit communicating at one end with one end of said air accumulator and at the other end with the interior of said housing through said opening in the other end wall thereof, quickly opening and closing valve means in said air conduit, and a contact member which is actuated by direct contact with said chamber forming means so as to open and close said valve means in sequence with the movement of said chamber forming means so that in said discharge position of said chamber forming means the latter actuates said contact member whereby said valve means quickly opens and the compressed air accumulated in said air accumulator enters with a sudden burst through said air conduit into said chamber and blows off mine waste out of the latter into said discharge conduit.

1 more element

A pneumatic stowing apparatus, especially for filling up dams in an underground mine gallery by blowing rough mine waste resulting from blasting operations during advance of a mine gallery by means of compressed air to a point of use, said apparatus comprising a substantially closed housing having a top wall provided with an inlet opening and being in longitudinal direction of substantially semi-conical configuration, said housing having a pair of end walls each provided with at least one opening aligned with the opening in the other end wall;

at least one discharge conduit communicating with the interior of said housing through the opening provided in one of the end walls thereof;
a source of compressed air;
an air conduit communicating at one end with said source and at the other end with the interior of said housing through said opening in the other of the end walls thereof;
means forming at least one elongated chamber having opposite open ends adjacent to the end walls of said housing and being tiltable in the interior of said housing about an axis coinciding with the axis of the top wall between a material receiving position in which said chamber is aligned with said inlet opening to receive mine waste passing through said inlet opening and a discharge position in which said opposite open ends are respectively aligned with said openings in said end walls so that compressed air passing from said source through said air conduit and said opening in the other end wall of said housing will blow mine waste out of said chamber into said discharge conduit to be transported through the latter to a point of use, said chamber forming means being in form of a sector shaped element having a cross-section substantially equal to two thirds of the cross-section of the housing;
means connected to said chamber forming means to move the latter between said positions thereof;
and quickly opening valve means in said air conduit operable in sequence with the movement of said chamber forming means.

3 more elements

Dependencies are inferred from the claim text.