RU180435U1 - Rotary disc mixer - Google Patents

Abstract

The invention relates to devices for mixing heterogeneous liquid-liquid, liquid-gas systems due to the high shear stress and excitation of oscillations of the processed mixture. The objective of the utility model is to create a new device - a disk rotary mixer with the following technical result: increasing the efficiency of mixing heterogeneous liquid systems -liquid, liquid-gas. The disk rotary mixer contains loading and unloading nozzles, a drive, a fixed cylindrical to case, in the volume of which perforated disks are rigidly fixed, between which there is a similar perforated disk design, mounted on a rotating rotor, while on both surfaces of the movable disk there are teeth of square section, height h, varying in the interval 1 <h / δ <2, where δ is the thickness of the disk, while the perforations on the fixed disks repeat the section profile and the orientation of the teeth, and the number of slots coincides with the number of teeth. The arrangement of n teeth on the lower side of the movable disk is shifted in the direction of rotation by an angle ϕ = 360 / n degrees with respect to the position of the teeth on the upper side of the disk. Such an arrangement of the teeth on the movable disk and the slots on the fixed disks makes it possible to excite pulsations in the mixture being processed with a frequency, where ω is the angular velocity of rotation of the shaft.

Description

The invention relates to devices for mixing heterogeneous liquid-liquid, liquid-gas systems due to the high shear stress and excitation of oscillations of the processed mixture.

A device for grinding products, including enclosed in a housing coaxially located on a vertical shaft alternating ring-shaped disks with cutting bodies along the outer and inner diameters and washers alternating with these disks, as well as paddle loading and unloading impellers and a vacuum device brought to the top devices, the upper part of the housing, by means of a partition, is separated from the grinding zone, and a vacuum device is located in the cavity formed with tchatoy partition and the upper housing part, wherein the loading of the impeller blades are made in the form of a mesh and baffles mounted at the angle to the vertical shaft. [A.S. USSR No. 710636, cl. В02С 18/06, Device for grinding products / Nevarova V.E., Kortelev A.K .; Declared on 07.06.76 .; Posted on 1/25/1980.]

The disadvantage of this device for grinding products is the design complexity and low productivity of the device due to the relatively small grinding zone of the processed medium.

The closest technical solution to the proposed utility model (prototype) is a rotary disintegrator-mixer, containing loading and unloading nozzles, a drive, a fixed cylindrical body, in the volume of which perforated disks are rigidly fixed, located alternately with similar perforated disks, similar in design, mounted on a rotating rotor . [RF patent No. 59441, cl. B02C 7/08, Rotary disintegrator-mixer.]

The disadvantage of this rotary disintegrator-mixer is the relatively low efficiency for grinding and mixing heterogeneous liquid-liquid, liquid-solid particles and the need to supply raw materials under pressure due to the high hydraulic resistance.

The objective of the utility model is to create a new device - a disk rotary mixer with the following technical result: increasing the efficiency of mixing heterogeneous liquid-liquid, liquid-gas systems.

This problem is solved in that the rotary disk mixer contains loading and unloading nozzles, a drive, a fixed cylindrical body, in the volume of which perforated disks are rigidly fixed, between which there is a similar perforated disk design, mounted on a rotating rotor, while on both surfaces of the movable disk there are teeth of square section, height h, varying in the interval 1 <h / δ <2, where δ is the thickness of the disk, while the perforations on the fixed disks repeat the section profile and orientation of the teeth, and the number of slots equal to the number of teeth. The arrangement of n teeth on the lower side of the movable disk is shifted in the direction of rotation by an angle ϕ = 360 / n degrees with respect to the position of the teeth on the upper side of the disk. This arrangement of the teeth on the movable disk and the slots on the fixed disks allows you to excite pulsations in the processed mixture with a frequency

,

,

where ω is the angular velocity of rotation of the shaft.

In FIG. 1 shows a disc rotary mixer.

In FIG. 2 shows a movable disk.

The rotary disk mixer contains a loading nozzle 1, an unloading nozzle 2, a drive (not shown in the figure), a fixed cylindrical body 3, in the volume of which perforated disks 4, 5 with a similar perforated disk 6 similar in construction to a rotating rotor 7 are fixed, on the upper and gentle side of which there are teeth 8. The arrangement of n teeth on the lower side of the movable disk is shifted in the direction of rotation by an angle ϕ = 360 / n degrees with respect to the position of the teeth on the upper side of the disk. This arrangement of the teeth on the movable disk and the slots on the fixed disks allows you to excite pulsations in the processed mixture with a frequency

,

,

where ω is the angular velocity of rotation of the shaft.

The area of the slots on the fixed disks S _H and on the movable disk 6 S _P must be not less than the cross-sectional area of the output 2 pipe.

Rotary grinding mixer operates as follows.

Under the action of the mass forces created by the teeth of the rotating disk 6, the heterogeneous medium being processed moves from the loading nozzle 1 to the discharge nozzle 2. When moving through the perforated disks 4, 5, 6, the heterogeneous medium is subjected to intense mechanical and vibrational effects that increase the efficiency of crushing and mixing processes .

The necessary level of intensity of mechanical action is determined by the rotor speed and the highly turbulent movement of the medium being processed in the gaps between the rotating movable and stationary perforated disks 4, 5, 6 and due to the generation of pulsations that occur when the slots of the fixed disks overlap with the teeth of the rotating disk.

The height of the teeth is determined experimentally depending on the rheological properties of the medium being treated.

The main advantages of the proposed design of a rotary grinding mixer include the following:

- multifunctionality due to the possibility of mixing heterogeneous liquid-liquid, liquid-gas systems;

- high productivity and efficiency of the grinding and mixing process;

- relatively low hydraulic resistance of the apparatus.

The utility model meets the criterion of "industrial applicability" and can be used in the chemical, food and paint industry for grinding and mixing heterogeneous liquid-liquid, liquid-gas systems.

Claims (1)

A rotary disk mixer comprising loading and unloading nozzles, a drive, a fixed cylindrical body, in the volume of which perforated disks are rigidly fixed, between which a similar perforated disk is mounted, mounted on a rotating rotor, characterized in that there are teeth on both surfaces of the movable disk, repeating the profile and orientation of the perforations on the fixed disks, while the number of slots coincides with the number of teeth, as well as the location of n teeth on the lower sides e of the movable disk is shifted in the direction of rotation by an angle ϕ = 360 / n degrees with respect to the position of the teeth on the upper side of the disk.

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