SU842008A1 - Blade-type feeder - Google Patents

Description

I

The invention relates to machine-building and can be used to supply viscous and bulk materials to press or mold plants, for example, screw presses for pressing oil, pasta molding machines and plastics, pressing machines for fruits and vegetables, etc.

Known blade feeder, comprising a housing with a loading and exhaust ports and mounted in it a blade rotor Cl.

The disadvantage of such a feeder is the lack of self-cleaning of the rotor blades, which leads to h, blading of the blades and reducing the reliability of the feeder.

The purpose of the invention is povapenie reliability of the blade.

This goal is achieved by the fact that a conical cavity is made concentric with its axis in the rotor, and the body profile in the cross section relative to the rotor is limited by conjugate semicircle and curve defined by the equation

  ,

where X and y are the current coordinates of the profile;

L is the length of a constant chord {1 passing through the axis of the rotor;

y is the displacement of the rotor axis relative to the axis of the semicircle;

R is the radius of the semicircle, in this case, a, where .r is the rotor radius-.

Figure 1 shows the paddle feeder, a section; figure 2 - section aa in figure 1.

Blade feeder contains body 1, designed in such a way that its profile has a curve, in which all chords passing through the center of rotation of the rotor are equal to each other and equal to 2R, where R is the half-radius radius constituting half of the curve, the second half of which is described by the equation / - "(/ R.

&& k. (VR-xSy.),

V (x "h-) X

where henn is the current coordinates of the profile j

L is the length of the constant chord passing through the axis of the rotor;

y is the displacement of the rotor axis relative to the semicircle; R is the radius of the semicircle, in this case, a, where r is the radius of the rotor.

The rotor 2 is made in the form of a hollow shaft with a tapered bore, eccentrically mounted in the housing 1, and the gate 3, freely mounted in the slot of the rotor.

When the rotor 2 rotates, the ends of the gate 3 slide along the inner surface of the housing 1, as a result of which, due to the eccentric arrangement of the rotor in the housing, the gate moves along the rotor slot alternately in both directions. In this case, at any time, the rotor slot is completely overlapped. When the feeder is in operation, the retractable end of the gate pushes and compresses the material and self-cleans as it moves back into the rotor. The material partially falling inside the rotor through the slit is pulled out of it along the inclined surface of the conical hole in the rotor. The optimum angle between the axis of rotation of the rotor and the surface of the conical hole, providing the self-cleaning effect, is 10.

The above hull profile has a variable displacement speed: a gate in the rotor, which improves the self-cleaning conditions and improves the reliability of the feeder.

Claims (1)

1. Zaichenko I.Z. and Myshlevsky L.M. Vane pumps and hydromotors. M., Mechanical Engineering, 1964. Sho9 product I Pui.f I SMffS affffytemo