RU2595714C1 - Device for mixing in liquid medium - Google Patents

Abstract

FIELD: mechanisms.

SUBSTANCE: invention relates to mixers and may be used to agitate liquids of various viscosity at chemical, pharmaceutical, food and other industries, as well as in educational institutions. Device includes housing with hollow shaft, inside of which pusher is installed with possibility of reciprocal movement, in lower part of which there are grooves to interact with short ends of upper radial blades, blades are connected to shaft, pivotally connected to each other and inclined blades, motor coupled with shaft, according to proposed technical solution upper radial blades are shorter and together with shaft form a system of hinged trapezoid inclined blades are inclined relative to shaft axis and housing walls; body is made with a cover and is arranged on base; in electric motor installed on the disc, there is a collet clamp connected plate, adjusting screw and face-plate with upper end of the pusher; disc, cover and base of device are installed with possibility of vertical movement on helical supports.

EFFECT: higher efficiency of mixing process medium and controlling position of blades relative to shaft axis and housing wall, as well as position of shaft with blades relative to bottom.

1 cl, 2 dwg

Description

The invention relates to mixing devices and can be used to mix liquids of various viscosities in chemical, pharmaceutical, food and other industries, as well as in educational institutions.

Known mixing device in a liquid medium, a positive decision on the application No. 20031022323 A, IPC B01F 7/16, published on 10.08.2004, Bull. No. 10, comprising a housing with a stirring mechanism mounted on its axis, including a drive shaft with blades pivotally mounted on it. Inside the hollow shaft, coaxially with it, a pusher is installed with the possibility of translational-reciprocal movement, having an annular groove at the lower end with a radius equal to the radius of rotation of the radial blades, a spring-loaded piston mounted on the upper end of the pusher interacting with the pusher and blades. The shaft is rotated through a gear reducer from an electric motor.

The disadvantage of this device is the inability to control the position of the blades during start-up and mixing in the absence of compressed air or liquid inside the cylinder with a spring-loaded piston, as well as the position of the shaft with the blades relative to the bottom of the housing, taking into account the physicochemical properties of the medium being mixed.

A device for mixing in a liquid medium according to the patent of the Russian Federation No. 2483792, B01F 7/18, published June 10, 2013, Bull. No. 16, taken as a prototype, comprising a housing with a shaft located inside it, inside which a pusher is mounted with the possibility of translational-reciprocal movement, on the upper part of which a piston is mounted, located inside the cylinder, radial and vertical blades are pivotally attached to the shaft, also pivotally connected between by myself. Grooves are cut in the lower part of the pusher, interacting with the short ends of the radial blades. The shaft is rotated through a gear reducer from an electric motor.

The disadvantage of this device is that the vertical blades are parallel to the axis of the shaft and the process of mixing the liquid is carried out with the same peripheral speeds along the height of the housing, which reduces its effectiveness. Another disadvantage is the inability to control the position of the blades relative to the axis of the shaft and the housing wall, as well as the position of the shaft with the blades relative to the bottom of the housing, taking into account the physicochemical properties of the medium being mixed.

The technical task of the invention is to increase the efficiency of the process of mixing the medium and adjusting the position of the blades relative to the axis of the shaft and the wall of the housing, as well as the position of the shaft with the blades relative to the bottom.

This object is achieved by the fact that in the inventive device for mixing in a liquid medium, comprising a housing with a hollow shaft placed inside it, inside which a push rod is mounted with the possibility of translational-reciprocal movement, in the lower part of which grooves are cut, interacting with the short ends of the upper radial blades, blades connected to the shaft pivotally connected to each other and inclined blades, an electric motor interconnected with the shaft, according to the proposed technical solution, the upper rails ialnye shorter lower blade and together with the shaft form a hinge trapeze system, inclined blades are inclined relative to the shaft axis and the shell; the housing is made with a lid and placed on the base; in the electric motor mounted on the disk, a collet clamp is mounted, connected by a bar, an adjusting screw and a face plate to the upper end of the pusher; the disk, cover and base of the device are mounted with the possibility of vertical movement on screw cylindrical racks.

The figure 1 shows the design of the proposed device with a partial cut along the vertical axis. Figure 2 shows a sectional view of a shaft rotation drive. The numbers indicate: 1 - mixer shaft; 2 - pusher; 3 - upper radial blades; 4 - lower radial blades; 5 - inclined blades; 6 - electric motor; 7 - bar; 8 - adjusting screw; 9 - a faceplate; 10 - spring; 11 - wing nut; 12 - rack; 13 - case; 14 - a cover; 15 - bottom; 16 - collet clamp; 17 - base; 18 - disk; 19 - nut.

The setup and operation of the claimed device occurs in the following sequence:

establish the position of the shaft 1 with blades 3, 4, 5 relative to the bottom 15 (Fig. 1h) by moving the cover 14 and the disk 18 on the uprights 12 using nuts 19 taking into account physical processes (suspension, dispersion, homogenization, etc.);

rotation of the wing nut 11 clockwise moves the bar 7, spring 10, pusher 2 down until it contacts the short ends of the upper radial blades 3. The blades 3, 4, 5 occupy a position from A to B (Fig. 1). To transfer the blades 3, 4, 5 to the position from B to C, rotate the wing nut 11 counterclockwise and move the pusher 2 up;

turn on the electric motor 6 and the rotation is transmitted through the bar 7, the screw 8, the faceplate 9, mounted on the upper end of the shaft 1, and the medium is mixed in the corresponding position of the blades (A, B, C).

The positive effect of the claimed invention is expressed in increasing the efficiency of mixing the fluid layers with different speeds W _t1 > W _t2 (Fig. 1) relative to each other, the ability to control the position of the blades relative to the axis of the shaft and the wall of the housing, as well as the position of the shaft with the blades relative to the bottom of the c taking into account the physicochemical properties of the mixed medium.

The claimed invention meets the criterion of industrial applicability and can be used as a mixing device in the petrochemical, pharmaceutical, food and other industries, as well as in research institutions and laboratories of universities.

Claims (1)

A device for mixing in a liquid medium, including an electric motor, a housing with a hollow shaft placed inside it, inside of which a push rod is mounted with the possibility of translational-reciprocal movement, grooves are cut in the lower part of the groove interacting with the short ends of the upper radial blades, radial blades are attached to the shaft, pivotally interconnected, characterized in that the blades together with the shaft form a hinged trapezoid system, the blades of which have an inclination relative to the axis of the shaft and the walls of the body sa; the housing is made with a lid and placed on the base; in the electric motor mounted on the disk, a collet clamp is mounted, connected by a bar, an adjusting screw and a face plate to the upper end of the pusher; the disk, cover and base of the device are mounted with the possibility of vertical movement on screw cylindrical racks.

Images