Device for uniformly dosing granular abrasive material in pneumatically working blasting devices

Abstract

Abstract In this device, the supply of abrasive material is located in a closed tank (1), with an abrasive-material feeding attachment which can be controlled with regard to the quantity fed per unit of time and comprises a feed screw (8) which is arranged in a horizontal screw tube (7) and whose receiving area adjoins the extraction line in such a way that the discharge area (15) of the screw tube (7) leads into the delivery line (13) without a change in the cross-section. The delivery line (13) forms together with the screw tube (7) a T-piece in the discharge area. To compensate for the pressure drop, a connecting tube (18) is provided between the delivery line (13) and the closed tank (1). The branch of the connecting tube at the delivery line (13) lies upstream of the mouth of the screw tube (7). <IMAGE>

Inventors

• 👤 Horst-Dieter Schlick

Bibliographic Details