SU1255183A1 - Static mixer for high-viscous components - Google Patents

Description

The invention relates to chemical equipment, and more specifically to mixers with fixed elements for mixing highly viscous components and can be used in industrial enterprises of artificial leather and film materials,

The purpose of the invention is to improve the quality of the final product;

Figure 1 shows a static mixer, a longitudinal section; Fig. 2 shows a cylindrical washer (mixing element), an isometric projection; FIG. 3 is a section A-A in FIG. 1 (a mixer in a connecting zone), FIG. 4 is a section BB in FIG. 1 (mixer in separating 30He) j in Fig. 5 is an enlarged image of a package of balls in a pyramidal hole of a cylindrical washer.

The static mixer (Fig. 1) contains a tubular metal body 1 with a threaded end to which the inlet flange 2 and the outlet flange 3 are attached. Cylindrical washers 4 with pyramidal holes (Fig. 12) are inserted into the body. These holes are tightly packed and calibrated balls 5, cylindrical washers are fixed by a key 6 against possible displacement of each other relative to each other. At the beginning and at the end of the mixer, lattices 7 are installed to avoid balls falling out of the mixer together with the components being mixed. For clamping and fixing the cylindrical washers, clamping rings 8 are provided,

The cylindrical washers are assembled so that the separation zone, one tdalindricheskaya washer in contact with the separation zone of the other washer, and the connecting area - with the connecting zone next, it washers (.l, 3 and 4).

The mixer works as follows.

The components to be mixed enter the mixer through the inlet flange 2, the passage of the gland ring 8, bypassing the grid 7 and entering the cylindrical washer 4, or rather the separation zone. Then, through the inter-ball spaces, separated and joined, enter the connecting zone, which is common to two adjacent washers. Pass the connecting zone

mixing, the components enter the separation zone. Such a connection and separation of the flows of the mixed components takes place several

times as the flow passes through the mixer. The number of cylindrical washers and their height depend on the viscosity of the components being mixed. What Bbmie viscosity blend composites

0 nents, the greater the number of washers required (the length of the mixer), the optimal number of cylindrical washers (their practical experiments) is 10-16 pieces.

5 The angle of inclination of the faces of the pyramidal holes is chosen so that the number of balls in each subsequent plane increases according to the law of the sequence of squares.

0 tov natural integer numbers:

K is the number of balls in the row; And the number of balls in the horizontal plane; And Kj, for example K 1; K 2; K 3; K D; AK 1; A 4;

5 A 9; Ats 16, etc. depending on the number of rows.

The best option is the number of balls in the row: K 2 in the lower part of the cylindrical washer (connector 0 per zone); K 5 in the upper part of the cylindrical washer (separation zone),

The optimal diameter of the balls is 3-6 mm. , The gaps between the balls form connecting and separation zones. In areas with large cross sections, separation zones are formed (Fig. 4), with a smaller one - connecting figs, 3). Q The end surfaces of the cylindrical washers pass exactly along the centers of the balls, and this row of balls It is an overall dL - two connecting washers. The height of the cylindrical washer depends on the radius of the 5 balls and the number of their rows (Fig. 5). 5 N - the height of the washer; h is the vertical distance between the centers of the balls of adjacent rows;

R is the radius of the ball;

h is the distance between the plane passing through the centers of the balls of the lower row and the plane of the beginning of the hole;

/ 5 - the angle formed by the edge of the pyramidal hole and the plane from the bases of an,

l - 45 is the angle formed by the face of the pyramidal hole and the plane of the base.

one

. As a result of the experiments performed, it was found that the best variant of the best package of balls is a design in which the inclination of the faces of the py fi eld holes is equal to 45, which ensures that the balls are arranged in such a way that their number in each subsequent plane increases. p yes integers.

. n is the number of rows in the working area 1 of the cylindrical washer,, {. n-1) (1); h 2R S in (and (2);

834

 sinot (n-l) (3);

 2sin oi (4); /} 2 arctg (sin) (5).

Such a design of mixing elements with a variable total cross-section of inter-ball gaps allows to intensify the mixing process most, especially when mixing a small amount of high viscosity fluids with a large number of low viscosity fluids.

The material of the mixer parts must be inert to the effects of the components being mixed,

FIG. g

ll rotated

Fig.Z

6-B turned

FIG. fy

 one

Compiled by G. Skachkov Editor S. Patrusheva Tehred L. Serdyukova Proofreader V. But ha

Order 4742/6 Circulation 578 Subscription

VNIIPI USSR State Committee for Inventions and Discoveries 4/5, Moscow, Zh-35, Raushsk nab. 113035

Production and printing company, Uzhgorod, st. Project, 4

Fig: 5

Claims (1)

STATIC MIXER FOR HIGH VISCOUS COMPONENTS, comprising a tubular body, inside which fixed mixing elements are installed, characterized in that, in order to improve the quality of the final product, the mixing elements are made in the form of cylindrical washers with holes having the shape of regular truncated pyramids, paired alternately smaller and larger holes completely filled with contacting balls, and the edges of the pyramidal holes are rounded in radius equal to the radius of the balls, and the angle n clone faces of pyramidal openings in the range from 40 to (50 °. SU_ „„. 1255183