RU2799511C1 - Agitator - Google Patents

Abstract

FIELD: mixing equipment.

SUBSTANCE: devices designed to carry out various heat and mass transfer processes of chemical techniques, which require the creation of a uniform field of concentrations and temperatures in the entire volume of the stirred medium at rational power consumption. The agitator consists of a shaft, a rotor mounted coaxially to the shaft with the possibility of reciprocating movement in the axial direction, radial spokes, a scissor mechanism, the lower ends of the scissor mechanisms are mounted on the shaft, the upper ends of the elements of the scissor mechanisms are mounted on the rotor. Radial spokes are located in a plane perpendicular to the plane of the scissor mechanism, and conical pins are attached to their surfaces, the tops of which are directed downwards, elastic elements and curved blades with holes are placed at the outer ends of the scissor mechanisms.

EFFECT: ensuring high quality mixing of liquid media.

1 cl, 3 dwg

Description

The invention relates to devices designed to carry out various heat and mass transfer processes of chemical technology, which require the creation of a uniform field of concentrations and temperatures in the entire volume of the stirred medium at rational power consumption.

Known stirrer [RF Patent No. 2396108, IPC B01F 7/16, publ. 08/10/2010, BI No. 22], containing a shaft, a rotor, radial spokes, at the ends of which confusers are fixed with inlet expanding holes facing the direction of rotation.

The disadvantage of the mixer is the relatively low quality of mixing.

Closest to the proposed invention is a stirrer [RF Patent No. 2626210, IPC B01F 7/16, publ. 07/24/2017, BI No. 21], containing a shaft, a rotor, radial spokes, at the ends of which confusers are fixed with inlet expanding holes facing the direction of rotation. Confusers and radial spokes are made in the form of interconnected scissor mechanisms of the rhombus type, the rotor is mounted coaxially to the shaft with the possibility of reciprocating movement in the axial direction, the inner ends of the elements of the scissor mechanisms are mounted using cylindrical hinges on the shaft and rotor, the lower ends of the elements of the scissor mechanisms are mounted on the shaft, the upper ends of the elements of the scissor mechanisms are mounted on the rotor, the axes of the cylindrical hinges connecting the elements of the scissor mechanisms are installed across the lengths of the elements along the sides of their greatest width and in planes perpendicular to the axis of the shaft.

The disadvantage of the mixer is the relatively low quality of mixing.

The technical result of this invention is the creation of a stirrer that provides high quality mixing.

The technical result is achieved by the fact that the mixer is proposed, containing a shaft, a rotor mounted coaxially to the shaft with the possibility of reciprocating movement in the axial direction, radial spokes, a scissor mechanism, the lower ends of the scissor mechanisms are mounted on the shaft, the upper ends of the elements of the scissor mechanisms are mounted on the rotor.

Distinctive design features of the proposed mixer is that the radial spokes are located in a plane perpendicular to the plane of the scissor mechanism, and conical pins are attached to their surfaces, the tops of which are directed downwards, elastic elements and curved blades with holes are placed at the outer ends of the scissor mechanisms.

In FIG. 1 shows the diagram of the stirrer.

In FIG. 2 shows view A.

In FIG. 3 shows view B.

The agitator contains a shaft 1, a rotor 2 mounted coaxially to the shaft 1 with the possibility of reciprocating movement in the axial direction, radial spokes 3, a scissor mechanism 4, the lower ends of the scissor mechanisms 4 are mounted on the shaft 1, the upper ends of the elements of the scissor mechanisms are mounted on the rotor 2.

Radial spokes 3 are located in a plane perpendicular to the plane of the scissor mechanism 4, and conical pins 5 are attached to their surfaces, the tops of which are directed downwards. At the outer ends of the scissor mechanisms 4 there are elastic elements 6 and blades 7 of a curvilinear shape with holes 8.

The mixer works as follows. The components of the mixture are loaded into the body of the apparatus (not shown in Fig. 1-3), in which the mixer is installed. When the mixer shaft 1 rotates, radial spokes 3 and scissor mechanisms 4, at the outer ends of which elastic elements 6 and curved blades 7 with holes 8 are placed, pick up the liquid and mix the components.

During the operation of the mixer, the rotor 2 reciprocates along the shaft 1, while the elements of the scissor mechanism 4 move with elastic elements 6 installed at the outer ends and blades 7 of a curvilinear shape with holes 8. In this movement, alternate action occurs on different parts of the stirred volume, which prevents the occurrence of stagnant zones and improves the quality of mixing.

Due to the fact that the radial spokes 3 are located in a plane perpendicular to the plane of the scissor mechanism 4, and conical pins 5 are attached to their surfaces, the tops of which are directed downwards, there is an intensive crushing of the flows under the spokes 3 (in the lower part) created by the scissor mechanism 4 with mounted on the outer ends of the elastic elements 6 and the blades 7 curved shape with holes 8, which improves the quality of mixing.

Due to the fact that at the outer ends of the scissor mechanisms 4 elastic elements 6 are placed, which change their shape during the movement of the rotor 2, intensive mixing occurs in the peripheral areas.

The implementation of the blades 7 curvilinear shape with holes 8 promotes intensive mixing due to the flow of liquid through the holes and flow around curved surfaces.

The proposed design of the agitator makes it possible to ensure high quality mixing of liquid media.

Claims (1)

A stirrer containing a shaft, a rotor mounted coaxially to the shaft with the possibility of reciprocating movement in the axial direction, radial spokes, a scissor mechanism, the lower ends of the scissor mechanisms are mounted on the shaft, the upper ends of the elements of the scissor mechanisms are mounted on the rotor, characterized in that the radial spokes are located in a plane perpendicular to the plane of the scissor mechanism, and conical pins are attached to their surfaces, the tops of which are directed downwards, elastic elements and curved blades with holes are placed at the outer ends of the scissor mechanisms.

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