SU771426A1 - Apparatus for drying and grinding pulverulent materials - Google Patents

Description

one

: The invention relates to installations for drying and grinding dispersed materials, preferably silver oxide, oxide and minerals, red lead, tellurium dioxide, etc.

Installations are known for drying and grinding dispersed materials, comprising a fluidized bed chamber with a gas distribution grill and a rotary grinder 10 placed along the axis of the chamber in the form of a vertical shaft on which the rods l are fixed.

A disadvantage of the known construction is the rigid attachment of the rods 5 to the shaft of the shredder, which complicates assembly and disassembly operations at stops.

The aim of the invention is to provide ease of operation. 20

The goal is achieved by the fact that the rods are fixed to the shaft with the help of cylindrical sleeves equipped with horizontal stops, the rods being movably mounted with a 25 change of the non-working vertical position to the horizontal one during operation. In addition, the rods are placed along a helix with a pitch of 10 .100 mm. thirty

FIG. 1 shows schematically the described installation; in fig. 2 mount knot-rod.

The described installation contains a cylindrical chamber 1 with a feeder 2 and a cyclone 3 for trapping the finished material, a gas distribution grill 4 and a rotor grinder 5 consisting of a vertical shaft 6 and rods 7, the ends of which are installed in the slots of the sleeves 8, fitted with horizontal stops 9. On the lid 10 of the camera 1, the bearing housing 12 is attached with bolts 11 with the shaft 6, which is inserted into the chamber 1 through the opening of the lid 10.

The operation of the installation is carried out as follows. The material supplied to the dryer and crushed by the feeder 2 is blown with heated gases, dried and self-ejected in the cylindrical part of chamber 1. Having removed some of the moisture, large and small particles of material are carried into the conical part of chamber 1. Here the particles fall under the action of a rotating chopper 5. With the shaft rotating 6, a centrifugal force arises, under the action of which all the rods 7 are raised to the stops 9 and held horizontal

Claims (2)

Claim Ϊ. The installation for drying and grinding dispersed materials, containing a 5 fluidized-bed chamber with a gas distribution grill and a rotary shredder located in the form of a vertical shaft on which the rods are mounted, is distinguished by the fact that, in order to ensure ease of use , the rods are mounted on the shaft using cylindrical bushings provided with horizontal stops, and the rods are mounted movably with a change in non-5 working vertical position to horizontal during operation. 2. Installation according to claim 1, characterized in that the rods are placed along a helix with a step of 10-100 mm. 20 Sources of information taken into account in the examination 1. USSR author's certificate No. 568822, cl. F 26 B 17/10, 1975. VNIIIPI - Order 6668/49 Circulation 747 Subscription PPP Branch '' Patent ¹¹ , Uzhhorod, Project 4,