RU1775152C - Mixer for viscous materials - Google Patents

Abstract

The invention relates to devices for the preparation of mixtures of viscous liquids, intended for use in many industries, and can improve the quality and intensification of mixing to obtain a homogeneous mixture. The proposed mixer for viscous liquids contains a mixing chamber 1, carrier 2, equipped with impellers 3, 4 and made with coaxialfff 11 5 3 7 /////////// / // & ///// ZW / V ///// with my shafts 5, 6 connected to the drive 7 and mounted for rotation in opposite directions, while the carrier 2 is installed with the possibility of mixing along the mixing chamber 1. The shaft 5 is connected to the drive 7 through a chain gear 8 gears 9,10,11 and rotates, for example, clockwise. The shaft 6 is connected to the drive 7 through a chain transmission 8, gears 12, 13 and rotates in the opposite direction than the shaft 5. The carrier 2 moves relative to the screw 15 of the column 16 when transmitting rotation from the spline shaft 17 through the chain transmission 18 to the nut 14 mounted on screw 15. When in contact with limit switches 20. 21, the direction of rotation of the actuator 7, the spline shaft 17, the shafts 5, 6 and the impellers 3, 4 change, and the carrier 2 changes the direction of movement along the mixing chamber 1.1 h. P. f-ly, 1 Vui.u /} ё

Description

The invention relates to devices for the preparation of mixtures, solutions, emulsions, slurries from viscous liquids for use in the chemical, engineering, food, construction, oil refining and other industries. The drawing shows a mixer, General view.

An object of the invention is to improve the quality and intensify mixing.

The mixer for viscous liquids contains a mixing chamber 1 carrier 2, equipped with stirring impellers 3,4, and carrier 2 is made with coaxial shafts 5, 6 connected to one drive 7. The impellers 3, 4 are mounted on shafts 5, 6. The shaft 5 is connected to the drive 7 through a chain gear 8, gears 9,10,11 and rotates, for example, clockwise, the shaft 6 is connected to the drive 7 through a chain gear 8, gears 12, 13 and rotates in the opposite direction than the shaft 5 Gears 9, 11, 12 are mounted on the same shaft 14. The carrier 2 is installed with the possibility of movement In the vertical plane and moves relative to the screw 15 of the column 16 when transmitting rotation from the spline shaft 17 through the chain gear 18 to the nut 19 mounted on the screw 15.

The carrier 2 moves between the adjustable limit switches 20.21.

The mixer for viscous liquids operates as follows. Mixing liquids (or mixture components) are charged into mixing chamber 1. The drive 7 is turned on, the spline shaft 17 is rotated, and from it the movement (rotation) is transmitted through a chain gear 8 to the shaft 14 and the chain gear 18 to a nut 19 mounted on the screw 15. From the shaft 14, the rotation is transmitted through gears 9, 10, 11 to the shaft 5 and an impeller 3 mounted thereon, which rotates, for example, clockwise. From the shaft 14, the rotation is transmitted through gears 12, 13 to the shaft 6 and the impeller 4 mounted on it, which rotates in the opposite direction than the impeller 3. At the same time, when the nut 19 is rotated, the carrier 2 moves relative to the screw 15 (lowers or rises) until it stops, for example, to the limit switch 20. When the carrier 2 touches the kdanze switch 20 connected by an electric circuit to the drive 7, the latter performs a reverse (changes the direction of rotation), respectively, the shaft 5 and the impeller 3, the shaft 6 and the impeller 4 change the direction of rotation.

19 connects the travel direction (drive column) of carrier 2. Then carrier 2 touches limit switch 21 and drive 7, connected by electrical circuit to limit switch 21, changes the direction of rotation and so on until the mixture is completely mixed.

The drive 7 is made in the form of an engine with a gearbox. Loading the components of the mixture into

the mixing chamber 1 can be carried out or if there are impellers 3, 4 or impellers 3, 4 can be located outside the mixing chamber 1. The end switches 20, 21 are adjusted to a certain length of movement depending on the length of the mixing chamber. Mixing is carried out, for example, with lubricants US1, US2 according to GOST 1033-73 with graphite. The volume of the mixing chamber 1 is 20 dm3 according to the developed documentation. The impeller speed is 3-20 rpm, the impeller is 4-20 rpm in the opposite direction. The distance between the impellers is 3, 4-10 mm. Carrier 2 moves at a speed of 120 mm / min. The number of blades on the impellers 3, 4 is the same - 4 pieces each. The angle of inclination of the blades to the axis of the shaft is 45 °. The blades on the impellers 3, 4 are deployed in different directions. Mixing the mixture in

mixing chamber 1 is carried out for 10 minutes (the duration depends on the components of the mixture).

The use of the proposed mixer for viscous liquids improves the quality of mixing by increasing the uniformity of the mixture throughout the volume of the mixing chamber, since:

-mixing is carried out by impellers mounted on coaxial

shafts rotating in opposite directions and creating multidirectional flows of the mixture with the greatest intensity of mixing at the boundary sections of the flows;

-mixing is carried out by impellers, which are mixed along the mixing chamber along with the drive column

a mixer;

-mixing is carried out by impellers that change the direction of the rotor. contact with the limit switches, for example, when moving downward (see Fig. 1, the lower impeller rotates clockwise, the upper impeller rotates counterclockwise, and when moving upward, the lower impeller rotates counterclockwise, and the upper one rotates clockwise and etc .;

allows to increase the intensity of mixing as a result of:

- the absence of stagnant zones throughout the volume of the mixing chamber, since the mixing is carried out by the impellers during their reciprocating movement along the mixing chamber,

- the presence of multidirectional flows from the impellers rotating in opposite directions from the same drive with a constant difference in angular velocities, while at the boundary sections of the flows there is a sort of blending of the mixture;

-exposure to the mixture, per unit volume of the chamber, by impellers changing the direction of rotation upon contact with the limit switches, i.e. when changing the direction of the reciprocating movement of the carrier.

In addition, technological capabilities are expanded by increasing the range of miscible liquids.

Claims (2)

1. The mixer for viscous liquids containing a mixing chamber, two coaxial shafts connected to one drive and mounted with the possibility of rotation in opposite directions at different angular speeds, the impellers mounted on the shafts, the blades of each of which are deployed in opposite parties characterized in that. that, in order to improve the quality and intensify the mixing process, the mixer is equipped with limit switches for the direction of rotation of the drive, electrically connected to it, a column with a screw kinematically connected to the drive, and a carrier mounted for vertical movement relative to the column screw and interaction with limit switches. 2. The mixer according to claim 1, characterized in that the impeller blades are installed at an angle of 45 ° to the axis of the shaft.