RU2460583C1 - Mill for grain milling - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: mill for grain milling refers to cutters with helical crushing bodies for grinding feeding grain, and can be used as a means of mechanisation of minor operations for individual households and small livestock farms. The mill comprises a receiving hopper, a cutting chamber, a grinding chamber, a working body, installed in the grinding chamber, which is a flexible elastic tube covered from inside with anti-friction material and provided with a mechanism of changing the angle of inclination. The mechanism of changing the angle of inclination is mounted at the end of the grinding chamber and is designed as a hydraulic cylinder driven by hydraulic gear, with the working body is designed as a double-lay strand of cable, consisting of the inner and outer layers of wires. The wires of the outer layer are in winding with a tangential gap, which value must be 1-2 mm greater than the size of the crushed grains.

EFFECT: mill provides increased productivity and quality of milling.

1 dwg

Description

The invention relates to grinders with screw-shaped crushing organs for grinding feed grain and can be used as a means of small-scale mechanization for individual farms and small livestock farms.

Known shredder (USSR author's certificate No. 1585000 dated 06/15/1992 В02С 19/22) containing a toroidal body with straight end sections, a working body in the form of a helical spiral, the ends of which are fixed on cylindrical supports, a receiving hopper and an unloading hatch located in the area of straight sections of the housing so that the hopper loading hole is made above the lower cylindrical support, and the manhole discharge hole is below the upper one, and for uniform feeding of materials into the grinding zone on the cylinder iCal supports are made helical chute on which the helix is screwed.

The disadvantage of the existing design is the high energy intensity of the grain grinding process and the low quality of the products produced.

The closest in technical essence is a device for grinding feed grain (copyright certificate No. 1680319 from 10.20.1995, V02C 19/22), containing a receiving hopper, grinding chamber, inside the grinding chamber there is a working body made in the form of a spiral-curved wire in contact between by turns on the side of a smaller radius of its bend, fixed at one end to a shaft equipped with an engine, and at the other end it is connected to an additional support.

The disadvantages of this prototype is the low productivity and low quality of grinding grain.

The invention is aimed at improving productivity and grinding quality.

This is achieved by the fact that the mill for grinding grain contains a receiving hopper, a crushing chamber, a grinding chamber in which the working body is installed, and the grinding chamber is a flexible elastic pipe coated with antifriction material from the inside and equipped with a mechanism for changing the angle of inclination installed at the end of the grinding chamber , in the form of a hydraulic cylinder, driven by a hydraulic actuator, and the working body is made in the form of a strand of double-lay rope, consisting of inner and outer layers of wires, and wires Formation aruzhnogo layer with tangential clearance, whose value must be greater than the size of cereal grains 1-2 mm.

The mechanism of changing the angle of inclination of the grinding chamber allows you to adjust the quality of grinding grain. When the angle of inclination of the grinding chamber exceeds the angle of repose of grain (25 ° -30 °), the crushed grain will roll down, then be captured by the working body and move up. The greater the angle of inclination of the grinding chamber, the more number of grinding cycles the grain will undergo, thereby improving the quality of the output. The presence of a tangential gap between the wires of the outer layer of the strand of the double twist rope allows you to increase the scooping ability of the working body and ensure reliable capture of crushed grain during movement, thereby increasing the productivity of the mill.

Figure 1 presents the mill for grinding grain in the context.

The mill consists of a frame 1, a housing 2, in which a shaft 3 with a drive is placed (not shown in Fig.). A receiving hopper is fixed on the frame 1. Using the shutter 5, the grain supply to the crushing chamber 6, which is made in the housing 2, is regulated. The crushing chamber 6 is filled by means of the screw 7. In the crushing chamber 6, a cone-shaped crushing element is mounted on the shaft 3 by means of an eccentric sleeve 8 9, rolling on the inner surface 10 of the crushing chamber 6. On the shaft 3 is mounted a working element 11 in the form of a spiral spiral strands of a double twist rope. The working body 11 is placed in a flexible elastic pipe 12, which is located on the support 13. Flexible elastic pipe 12 to the housing 2 is fixed using bolts (not shown in Fig.). The second end of the working body 11, coming out of the grinding chamber 14, located at an angle, is fixed on the axis 15 of the additional support 16. To exit the flour from the grinding chamber 14 in the flexible elastic pipe 12 holes are made with unloading pipes 17. At the end of the grinding chamber 14 before unloading the nozzles 17 have a mechanism for changing the angle of inclination of the flexible elastic pipe 12 in the form of a hydraulic cylinder 18, which is attached to it with a hinge 19 at the end of the grinding chamber 14. The hydraulic cylinder 18 is driven by a hydraulic actuator 20. On the axis 15 For the support 16, a frame 21 with a screening screen 22 is fixed, the opposite end of which is mounted for rotation on a bearing 23 mounted on a flexible elastic pipe 12 on top of the grinding chamber 14 under the discharge pipes 17. Under the screening screen 22, hoppers 24 are installed for receiving flour varieties and a hopper 25 for receiving bran.

Mill for grinding grain works as follows.

In the hopper 4, the grain is poured. The drive is included in the operation. The shaft 3 is rotationally driven. The damper 5 controls the flow of grain into the crushing chamber 6. Grain with a screw 7 is fed into the area of action of the cone-shaped crushing element 9. When the shaft 3 is rotated due to the eccentric sleeve 8, the cone-shaped crushing element 9 rolls along the inner surface 10 of the crushing chamber 6, subjecting the grain to crushing forces. Coarse crushing of grain occurs. Then, the crushed grain enters the grinding chamber 14, in which, when the working body 11 is rotated, it is "captured" into the tangential gaps between the wires. Due to the fact that the angle of inclination of the flexible elastic pipe 12 is greater than the angle of repose of the grain, the crushed grain is subjected to repeated rolling, moving along the grinding chamber 14, turning into flour, thereby ensuring the required grinding quality. The grinding quality is regulated by changing the angle of inclination of the flexible elastic pipe 12 by means of the hydraulic cylinder 18, driven by the hydraulic actuator 20. The larger the angle of inclination of the flexible elastic pipe 12, the more grinding cycles the grain undergoes, thereby improving the quality of the output. The resulting flour is discharged through the discharge nozzles 17 onto the net 22, which rotates together with the working body 11 due to the axis 15, the frame 21, the bearing 23. The flour is sifted by grades - bran is separated and delivered to the bins 24 and 25.

Claims (1)

A mill for grinding grain containing a receiving hopper, a crushing chamber, a grinding chamber in which a working body is installed, characterized in that the grinding chamber is a flexible elastic pipe, coated with antifriction material from the inside and equipped with a hydraulic cylinder angle adjustment mechanism installed at the end of the grinding chamber, and the working body is made in the form of a strand of double-lay rope, consisting of inner and outer layers of wires, the wires of the outer layer being entangled with tangential n gap, the size of which is larger than the grain size by 1-2 mm.

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