CZ280071B6 - Edge mill - Google Patents

Abstract

The mill wheel for grinding the raw material consists of a basic mill body with a rotating grinding path and treads and is arranged so that a crank head (3) fitted on the pins (4) is pivotably mounted on the fixed pin (2) of the mill base (1) mounted cranks (5) in which the tread pins (6) are fastened (7) and that the hydraulic cylinders (10) connected to the pins (9) are pivotally mounted between the crank arms (8) and the cranks (5) the hydraulic station (11) provided with the distributor (12) and the hydraulic circuit (13) and the drive (15) of the grinding track (14) is located in the lower part in the axis of the basic body of the mill (1). ŕ

Description

Wheel mill

Technical field

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheel mill for grinding raw material, the structure of which is formed by a rotating grinding path, a bottom drive in the mill axis, a fixed crank head with pivotably mounted treads hydraulically pressed with adjustable grinding pressure.

BACKGROUND OF THE INVENTION

The prior art wheel mills are not equipped with a thrust adjustment device and a grinding slot adjustment device at all, or some have spring compression, hydraulically in combination with a mechanical grinding slot adjustment mounted in two separate crank heads and with an upper drive of the mill grinding path. These milling arrangements do not meet the current requirements of grinding raw materials because they do not allow to control the grinding pressure and grinding slot hydraulically according to the type and properties of the grinded raw material for the output grain, they are very heavy and are difficult to operate and maintain.

SUMMARY OF THE INVENTION

The aforementioned drawbacks are eliminated by the wheel mill according to the invention, which is based on the fact that the crank head is fixedly mounted on a fixed pin of the basic body of the mill, provided with pivoted cranks on the pins. The hydraulic cylinders are pivoted.

For proper operation it is advantageous that the hydraulic cylinder is connected to a hydraulic station provided with a distributor and a hydraulic circuit and that the grinding path drive is located in the lower part in the axis of the basic body of the mill.

Overview of the drawings

An exemplary embodiment of a wheel mill according to the invention is shown schematically in the accompanying drawing, in which Fig. 1 is a mill structure and Fig. 2 is a plan view of a mill, a view of a crank head with hydraulic cylinders.

DETAILED DESCRIPTION OF THE INVENTION

The wheel mill according to the invention consists of a base body 6, a grinding track 14, treads and the following arrangement. The fixed head 2 of the mill body 1 is fixed with a crank head 6 provided with pivoted cranks 5 on the pivot pins 4, in which the tread pins 7 are mounted and between the crank head levers 8 and the cranks 8 the hydraulic cylinders are pivoted 10. The hydraulic cylinders 10 are connected to a hydraulic station 11 provided with a distributor 12 and a hydraulic circuit 13. The drive 15 of the grinding track 14 is located at the bottom in the axis of the basic body of the mill 1.

-1GB 280071 B6

The wheel mill according to the invention works as follows:

The pivotally mounted hydraulic cylinders 10, together with the hydraulic station 11, the hydraulic distributor 12 and the hydraulic circuit 13, exert controllable grinding pressure of the treads 7 in a given range according to the type of raw material being ground and allow adjustment of the grinding slot according to the grinding fineness requirement. The hydraulic distributor 12 is also adapted to protect the mill against overload. Hydraulic lifting of the treads 7 is also advantageously used to gradually lower them to the desired grinding slot when the mill is started or when the tread bandages 7 are replaced.

Wheel mill can be used everywhere raw materials.

where there is a requirement for grinding

PATENT CLAIMS

Claims (3)

A wheel mill for grinding raw materials, consisting of a mill base, a rotating mill track and a tread, characterized in that a fixed crank head (3) provided on the pins is fixedly mounted on a fixed pin (2) of the mill base (1). (4) pivotally mounted cranks (5) in which the tread pins (6) of the treads (7) are mounted, with hydraulic cylinders (9) pivotally mounted between the levers (8) of the crank head (3) and the cranks (5); 10). Wheel mill according to claim 1, characterized in that the hydraulic cylinders (10) are connected to a hydraulic station (11) provided with a distributor (12) and a hydraulic circuit (13). Wheel mill according to claims 1 and 2, characterized in that the drive (15) of the grinding path (14) is located in the lower part in the axis of the basic body of the mill (1).