SU1110500A1 - Grain cleaner disk - Google Patents

Abstract

1. A TRIER DISC containing cell surfaces on the side, characterized in that, in order to increase the productivity of the grain cleaning process, it is made with additional cells on the end surface. 2. Trier disc according to claim 1, characterized in that the additional cells are cylindrical in shape. (L

Description

The invention relates to mechanical engineering and can be used in the elevator, milling and feed industry for the separation of grain mass in length,

Known is the working body of Trier, consisting of a rim with a hub, a cellular surface formed by segments, and a clamping ring. A Trier disk containing a C21 cell on the lateral surfaces is known.

However, the known trier discs are characterized by low production, due to the fact that the cells are located only on the side surfaces.

The purpose of the invention is to increase the productivity of the grain cleaning process.

The goal is achieved by the fact that the Trier disc with cells on the side surfaces is made with additional cells on the end surface.

Moreover, additional cells are cylindrical.

In FIG. 1 shows a diagram of the disk; in fig. 2 is a view A of FIG. 1, in FIG. 3 shows the design of the effect of the forces on a short particle in the zone of capture of short particles / in FIG. 4 - the same, in the zone of emission of short particles; in fig. 5 - the range of oi-angles of rotation of the wild, in which short particles do not fall out of the cells.

Trier disc contains cells 1 on lateral surfaces x 2 and additional cells 3 cylindrical

forms on the end surface 4. Additional cells are located

at an angle to the radius of the disk and directed in the direction of its rotation. Tray 5 is used to remove short particles.

The optimal angle H, which determines the size of the disk sector, is limited to the angle of capture of the short particle from the grain material cs, and the angle ejection 2. can be found from the condition of the equilibrium of the forces applied to the short particle in the additional cell 3

The short particle in the capture zone is acted upon (Fig. 3), which is the force of gravity G of the short particle, perpendicular to the direction. ,

corresponding to the longitudinal axis of the cylindrical cell is Q- O Соч, (od + jb, which is the force of gravity Cd of a short particle, parallel to the direction). normal reaction force N / fi-cY) sVol- 6V

friction force -t-fp, (: (- cos (dv, i; component of centrifugal force. penri-ti) -R, perpendicular to direction i - PI (u) -2-fitv.jj-, component of centrifugal force Р m оо U, parallel to the direction nrP2 vfl-® -C-coSJb, force

normal reaction (s5 -S-siw, friction force,. ftp ,,

(one)

.Where

oi. - the angle of rotation of the disk

jb - tilt angle additional

cells,

 is the mass of a short particle, f is the coefficient of friction, and is the acceleration of the force of gravity, 9.81 m / s2, is the radius of the disk, (is the angular velocity of rotation

disk.

We make the equation of equilibrium of forces acting on a short particle, for which we project all the forces in the direction n

Q-ethCelt) 4.fQ-CttS (pi Vf-ni-uu e-SlhJJ-,

-VYI-Ctt.e-COS O; () In view of (1), we obtain.

 im-g.sih () (- cos (ai.i) -w.au.c (cos -f-sw} o;

(h;

From equation (3) we find:

; Lsi4fett, f yf-o3s () 3

(game:

() COSjb-f - $ {v.Ji.)

. in existing trirators, the angular velocity of rotation of the disks is; at 5.75 rad / s; disc radius 0.315m.

Let's say the angle Jb is 14 °. Taking into account the indicated numerical values, from equation (4) we obtain: ci, 26.

55

Consider the effect of forces applied to a short particle located in an additional cell 3 in the ejection zone (Fig. 4). Similarly to the above decomposition of forces and designing them into the direction L, we get: "CJ-sl (ptijj) -vmcji-cos) -mutf .5 (cosjJ-fsm) 0 (5) From equation (5) we find: / ofei frltfiVf-ODStoj ) / V R.OOSfb-l OOSjb-f SlHjb taking into account the given numerical values, from equation (6), obtain d.2 140 °. Substituting the value of the angle j2 О in formulas (4) and (6), we obtain ci, ot, 140 ° (Fig. 5). It is seen from the calculation that the value of the ejection angle oLj is almost unchanged with the change in the angle P, and the value of the capture angle cL at any values of the angle fo is less than the angle of repose of the grain material, equal to 35 - 45, i.e. provided the capture of an additional cell 3 short particles of grain material. Trier disc works as follows. When rotating, the Trier's disk captures from the grain mass with cells 1 on the side surfaces 2 and additional cells 3 on the end surface 4 short particles and throws them into the tray 5 of the trimer. The long particles present in the grain mass are discharged from the cells back into the grain mass. The proposed device allows an increase in Trier's productivity by an average of 6%.

Viva

sri8.2

Claims (2)

1. DISK TRIER, containing on the side surfaces of the cell, characterized in that, in order to increase the productivity of the grain cleaning process, · it is made with additional cells on the end surface. 2. Trier disk in π. 1, characterized in that the additional cells are cylindrical in shape. 1