SU1456210A1 - Mixer - Google Patents

Abstract

The invention relates to mechanical engineering, mainly agricultural, and can be used to blend powdered materials with varying degrees of flowability. The purpose of the invention is to intensify the mixing process while reducing its energy intensity. The mixer includes a housing with loading 2 and unloading 3 nozzles, a mixing device in the form of two spiral elements — the main 4 and an additional 5, the distribution cup 6 with slots 7 and scrapers 11. The main spiral element 4 is shifted downwardly relative $ (/

Description

but an additional spiral element 5 to the distance H, defined by the relation Hi- (D-d) tgui, where

D is the larger diameter of the case, mm; d is the diameter of the discharge pipe, mm; 0, is the static angle of repose of the material being mixed, deg. The winding of spiral elements can be tape-filled with different angles of inclination to the axis 13 of the shaft 10, the components are loaded into the mixer through nozzle 2 and they through the slots 7 in the glass 6 enter the zone of elements 4 and 5, which inform the components of the movement in three large flows. 3 з.п, ф-л, 6 Il.

one

The invention relates to mechanical engineering, primarily agricultural, and can be used to mix powdered materials with varying degrees of flux.

The purpose of the invention is to intensify the displacement process while simultaneously reducing its energy intensity.

Fig. 1 shows a mixer, bage view; FIG. 2 is a section A-A in FIG. Fig. 3 is a circuit for determining the values of the H displacement of the helices; 4-6 are flow diagrams of mixed components.

The mixer includes a housing 1 with loading 2 and unloading 3 nozzles, a mixing device in the form of two material lifting spiral elements of the main 4 and an additional 5, a distributor cup 6 with radial slots 7 in the bottom 8, while the cup 6 is fixed on the inner surface 9 housing 1. On the drive shaft 10 mounted scrapers 11.

The main spiral element 4 has a diameter equal to or greater than the diameter d of the discharge pipe 3, and is displaced downward relative to the additional spiral element 5 to the distance H defined. by ratio

NGG i (D-d) tgei,,

where D is the larger diameter of the case, mm; d - diameter of discharge pipe C3 y MMji

five

0 5

0

five

.2

"L - the statistical angle of repose of the mixed material, hail.

The winding of the spiral elements 4 and 5 can be made tape, with: this is the angle of inclination of the working surfaces 12 of the main spiral element 4 to the axis 13 of the shaft is more than 90, and the additional 5 is less than 90. The windings of the additional 5 and main 4 spiral elements are made with the same pitch S and offset from each other by a distance equal to 1/2 of the step S.

The mixer works as follows

The components measured by volume or by weight are placed into the mixer through the filling nozzle 2. The components are loaded with the mixer running. The components through pipe 2 enters the distribution canal 6 and through the slots 7 by means of scrapers 11 are fed into the housing 1. Rotating spiral elements 4 and 5 carry the mixed components into motion along three large flows. One of the streams forms a spiral element .5, which part of the components moves from below along the conical walls of the housing 1. Another stream is formed by element 4, which moves the components in the central zone upwards. The third stream is formed under the action of gravitational SSh1. In addition, numerous small flows are created between the windings of the spiral elements 4 and 5.

The displacement of the main spiral element 4 down on the specified distance / 1 V

g g

o / tfffyffa

n {i-an

Fig.Z

FIG. five

Claims (4)

Claim 1. A mixer comprising a housing tapering downward with loading and unloading nozzles located respectively at the bottom and top of the housing, and a mixing device in the form of a lifting material spiral element vertically mounted on the drive shaft, characterized in that, in order to intensify the mixing process while reducing it energy capacity, the mixing device is equipped with an additional spiral element mounted coaxially 5 to the main one and having the same winding direction with it, while the main spiral element has a diameter equal to or greater than the diameter of the discharge pipe, and is shifted downward from the additional element by a distance H, determined by the ratio H * i (D-d) tgoZ, where P is the larger diameter of the body, mm; d is the diameter of the discharge pipe, mm; o4 - static angle of repose of the mixed material, degrees, 2. The mixer according to claim 1, characterized in that it is equipped with a distribution cup, you- 25 filled with radial slots in the bottom, mounted coaxially to the body and fixed on its inner surface, and scrapers mounted on the drive shaft above the bottom 30 dispenser cups. 3. The mixer according to paragraphs. 1 and 2, characterized in that the winding of the spiral elements is made of tape, while the angle of inclination 35 working surfaces of the internal spiral to the shaft axis are more than 90 °, and the external - less than 90 °. 4. The mixer popp.1-3, characterized in that the winding 40 spiral elements are made with the same pitch and are displaced relative to each other by a distance equal to 1/2 step. ait FIG. 4 | -. □