RU2546273C1 - Worm grinder - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: worm grinder contains casing with material input hopper and output nozzle. Driven rotor shaft is installed in the casing. The driven shaft has worm taping along full length of the pipe and transition over some fixed and movable knives to the centrifugal drum. The centrifugal drum is made with distribution head and mesh walls of the casing. Chamber with vortex slots is installed on the driven shaft. Chamber can be made tight.

EFFECT: grinder ensures ultrafine powder out of plant materials with specified size.

3 cl, 2 dwg

Description

The invention is intended for grinding plant materials and obtaining powder materials.

Known screw shredder for worn tires (RU 2265516, IPC B29B 17/00, B29K 21/00, publ. 10.12.2005, BI No. 7), containing a perforated cylindrical body provided with internal cutting edges, a hopper coaxially placed in a cylindrical the housing is a transporting cutting auger with a drive, an end matrix with dies and an additional perforated cylinder having internal cutting edges.

The disadvantage of this device is the high energy and metal equipment for producing fine powder.

Known for the prototype vertical screw feed chopper-mixer (RU 2465764, IPC A01F 29/00, B02C 18/08 published on 05/20/2012), comprising a vertical cutting body located in the housing, made in the form of a screw thread with cutting edges along its periphery, and the counter element, covering the cutting body, and also as a counter element, a screw working element with a tape screw and the directions of winding and rotation opposite to the cutting body is used.

The disadvantage of this device is the lack of the possibility of crushing plant materials to obtain a one-dimensional ultrafine powder.

The technical problem to which the invention is directed, is to create a grinder, which allows you to get ultrafine powder from plant materials with a given dimension.

The problem will be solved in that the chopper includes, in addition to the cutting screw, a number of movable and fixed knives, which gives the best grinding and obtaining the same dimension. In addition, the additionally treated plant mass enters the centrifugal drum with mesh side walls, where it is additionally crushed, and then into the vortex chamber, where the final destruction of the plant material and ultrafine powder are obtained.

The essence of the proposed solution is illustrated by the drawing, where figure 1 shows a screw chopper; figure 2 is a section aa of figure 1.

The screw chopper has a housing 1 with a hopper for the input of vegetable raw materials 2 and a rotor 3 drive shaft is installed in the housing 1, on which a screw winding 4 is made in the upper part along the entire length of the pipe 5. The pipe 5 at the end has a conical extension 6, where on the drive shaft rotor 3 has movable cutting knives 7, 8, 9, 10, and parallel to them motionless cutting knives 11, 12, 13, 14 are installed stationary on the conical extension 6. The conical extension 6 is fixedly connected to the cylinder body 15, inside of which on the rotor drive shaft 3 cent set a rotary drum 16, rigidly fixed to the supporting axes 17 and having an umbrella for distributing vegetable raw materials 18. The centrifugal drum 16 has a conical rise 19 in the lower part, and the side walls of the centrifugal drum are made in the form of a mesh 20. Also in the cylinder body 16 on the rotor drive shaft 3, a chamber 21 is installed, which is sealed and has vortex slots 22. The lower part of the cylinder body 16 is closed by a lid 23 connected to the outlet pipe 24.

The device operates as follows. Vegetable raw materials for grinding through the hopper 2, installed in the housing 1, enters the screw winding 4, which is installed on the drive shaft of the rotor 3. When the shaft 3 is rotated, the screw winding 4 captures the vegetable raw material, compresses it and performs primary grinding.

Next, the pre-crushed vegetable raw material passes through the pipe 5 and enters the conical expander 6, where additional grinding of the plant material occurs by cutting with movable knives 7, 8, 9, 10 and stationary 11, 12, 13, 14. Next, the crushed raw material passes between the supporting axes 17 and falls on the distribution umbrella 18, with the help of which it moves into the cylinder body 15 and is discarded to the inner walls of the centrifugal drum 16.

Then, the vegetable raw materials due to centrifugal forces are ejected through the outlet openings of the grid 20, made in the side walls of the centrifugal drum 16, while the particles of raw materials are reduced in the size determined by the opening of the grid 20, and the plant raw materials settled to the bottom with a conical lift 19 is directed to the inner walls centrifugal drum 16 for further grinding.

Further, the plant material enters the vortex grooves 22 made in the movable chamber 21, where the final grinding of the plant material takes place. The output of the finished product occurs through the pipe 24 connected to the bottom cover 23 of the cylinder body 16.

Claims (3)

1. A screw chopper containing a cylindrical housing, a loading hopper, a transporting cutting auger with a drive located in a cylindrical housing, characterized in that movable cutting knives of various lengths, a centrifugal drum with a distribution umbrella and mesh walls, and a chamber having swirls are mounted on the drive shaft grooves. 2. The screw chopper according to claim 1, characterized in that the pipe has a fixed conical extension, in which fixed knives of different lengths are installed parallel to the movable knives. 3. The screw chopper according to claim 2, characterized in that the chamber is sealed and there are vortex grooves on its outer surface, and it is also connected to the outlet pipe.

Images