초록 ▼

A positive displacement explosive base dosing pump is provided with a drive motor 14 and has an outlet 22 connected via a flexible hose 24 to a lance 70. The lance 70 has a mixing device 72 therein and a reciprocable positive displacement gassing solution dosing pump has an outlet connected via a fl

A positive displacement explosive base dosing pump is provided with a drive motor 14 and has an outlet 22 connected via a flexible hose 24 to a lance 70. The lance 70 has a mixing device 72 therein and a reciprocable positive displacement gassing solution dosing pump has an outlet connected via a flexible conduit 54 to the lance and feeding into the lance upstream of the mixing device 72. The invention involves using the base dosing pump 12 to pump explosive base from a supply 78 along the hose 24 to the lance 70 while the gassing solution dosing pump 16 simultaneously pumps gassing solution from a supply 56 along the flexible conduit 54. The conduit 54 leads the solution into the lance 70 upstream of the mixing device 72 whereby the explosive base is mixed with the solution, so that a mixture issues from the lance 70 which become sensitized after reaction has taken place between the base and solution.

대표청구항 ▼

A mobile apparatus for loading a sensitized explosive of the slurry or emulsion type into a borehole, the apparatus comprising a reciprocable positive displacement explosive base dosing pump having an inlet for explosive base; a drive motor drivingly connected to the pump; a flexible hose connected

A mobile apparatus for loading a sensitized explosive of the slurry or emulsion type into a borehole, the apparatus comprising a reciprocable positive displacement explosive base dosing pump having an inlet for explosive base; a drive motor drivingly connected to the pump; a flexible hose connected to an outlet of the dosing pump; a lance connected to the end of the hose remote from the pump; a mixing device mounted in the lance for subjecting fluid passing therethrough to mixing and shear; a reciprocable positive displacement chemical gassing solution dosing pump having an inlet for chemical gassing solution, the gassing solution pump being operatively connected to the base pump for synchronous operation therewith; and a flexible conduit connected to an outlet of the gassing solution pump and leading to the lance into which it feeds at a position upstream of the mixing device.