SU1607922A1 - Mixer - Google Patents

Abstract

The invention is intended for mixing substances (powders, liquids, powders with liquids) and allows for an increase in the intensity of mixing by constantly shaking the mixing drum during its complex rotation. The device is equipped with two magnetic couplings, the coupling halves of one of which are mounted on the axis of the forked support and the drive shaft, and the half coupling of the other on the axis of the other forked support and the freely rotating driven shaft. 1 hp f-ly, 1 ill.

Description

The invention relates to the mixing of substances and can be used for mixing powders, liquids, powders with liquids in the chemical, electronic, food and other industries.

The aim of the invention is to increase the intensity of the mixing process by constantly shaking the material with reliable operation of the mixer.

The drawing shows the mixer.

On base 1, bearing shaft 2 is mounted in bearing units 2 and a freely rotating drive shaft 4. In forked supports 5 and 6, slot 7 is hingedly fixed, inside which a replaceable mixing drum 8 is installed. Wilchata support 5 is hingedly connected to drive shaft 3, and friend - with the driven shaft 4. On the drive shaft 3 there is a knowledge of the magnetic coupling half 9, aligned with it on the drive shaft 10 (the shaft drive is not shown) - the driving magnetic coupling half 11. The driven magnetic coupling 12 is also installed in the driven 4 and coaxially with her free one axis 13 rotating in its bearing support is a driven magnetic coupling half 14. Sealed screens 15 of non-magnetic material are mounted between the driven 9 and 14 and the leading 11 and 12 magnetic half coupling, and the coupling half plays the role of a flywheel. Jack 7 with a mixing drum 8, forked

supports 5 and 6, shafts 3 and 4, bearing units 2 and magnetic coupling halves 9 and 12 are placed in a sealed enclosure 16 through the opening closed by the base 1.

The mixer works as follows.

When the actuator rotates, the drive magnetic half coupling 11 mounted on the drive shaft 10 rotates the driven magnetic coupling half 9 mounted on the drive shaft 3 and the fork 5 through its shield 15 and the socket 7 with the mixing drum 8 fixed in it. The other end sockets 7, which are hingedly connected to the forked support 6, rotate the driven shaft 4 and the driving coupling half 12 mounted on it and through its screen 15 driven magnetic coupling half 14 playing the role of a flywheel.

When the mixer is rotated, based on the principle of a double universal joint, there is an uneven rotation of the driven shaft 4, which periodically receives accelerated or slowed rotation through 1/4 of a turn. The driven coupling half 14, mounted on the rotating axis 13 and received rotation from the driving coupling half 12, begins to prevent its mass from accelerating or decelerating the rotation of the driven shaft 4. This force through the forked supports 5 and 6 and the socket 7 is transmitted to the magnetic coupling half 9. Magnetit

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on the coupling half 9, turning (in the limit not exceeding the angle of failure of the magnetic couplings) relative to the magnetic coupling half 11 in the direction of rotation of the drive with accelerated rotation or against the direction of rotation with slow rotation of the driven shaft 4, returns to its original position and the action of inertial forces is even further in the opposite direction. The embedding effect, which occurs when switching from the accelerated rotation of the driven shaft 4 to the delayed one and vice versa due to the non-rigid coupling of the magnetic coupling halves 9, 11, 12 and 14, acquires a swinging character, while the amplitude of these oscillations is much larger than with the hard coupling of the actuator drive shaft 3. The vibrations arising upon shaking are not damped further until the next shaking, but are supported by the magnetic coupling of the coupling halves.

Thus, slot 7 with mixing drum 8 performs a complex spatial motion in several planes with constant shaking, which

Thus, the proposed mixer has the following technical and economic advantages in comparison with the known:

The intensity of displacement increases due to the constant shaking of the material in the drum 4 times.

The reliability of the mixer increases by simplifying the design, and the turnaround cycle increases by 2 times.

The working conditions of the maintenance personnel are improved by the separate placement of the drive unit and the drum.

Claims (2)

Invention Formula , g 1. A mixer containing a closed drum mounted on the base is hinged at both ends in fork supports, one of which is pivotally connected to the drive shaft, and the other with a freely rotating driven shaft, 20 characterized in that, in order to increase the intensity of the mixing process due to constant shaking of the material with reliable operation of the mixer, the device is equipped with two magnetic couplings, one half of the coupling half of which is mounted on the axis significantly increases the intensity of the intermixed support and drive shaft, and half shivani. In addition, the hermetic housing and rotation input to the mixing drum from the drive using magnetic couplings through screens, i.e., without sealing the drive shaft, significantly improves working conditions when working with toxic materials. Elastic magnetic coupling of the mixing drum with the drive eliminates the harmful hard shock loads on the mixer links, which creates conditions for reliable durable operation of the mixer. Comparative tests of the known and proposed mixers were carried out. Sol-gel spheres of uranium dioxide were mixed with a solid binder, zinc stearate. The addition of zinc stearate was 0.2% by weight of sol-gel spheres. 40 Sampling was carried out with a slot probe at three points along the height of the glass after 10, 20, 30 and 40 minutes of mixing. The content of stearate in samples according to the requirements of the technological process should be within, - 0.2 ± 0.05%. Tests were carried out from ten test runs for each mixer. The table shows the average results for the known and proposed mixers. The table shows that the allowable content in the samples within the required standards is achieved: in a known mixer after 40 minutes of mixing, in the proposed mixer - after 10 minutes and does not depend on the time of displacement. the second coupling is on the axis of the other fork support and the freely driven driven shaft. 2. The mixer according to claim 1, characterized in that, in order to improve working conditions when working with toxic materials, it is equipped with two shields installed between the coupling halves and a hermetic case in which the drum is placed. Thus, the proposed mixer has the following technical and economic advantages in comparison with the known: The intensity of displacement increases due to the constant shaking of the material in the drum 4 times. The reliability of the mixer increases by simplifying the design, and the turnaround cycle increases by 2 times. The working conditions of the maintenance personnel are improved by the separate placement of the drive unit and the drum. Invention Formula 1. A mixer comprising a closed drum mounted on the base, hinged at two ends in fork supports, one of which is pivotally connected to the drive shaft, and the other with a freely rotating driven shaft 0 characterized in that, in order to increase the intensity of the mixing process due to the constant shaking of the material with reliable operation of the mixer, the device is equipped with two magnetic clutches, one half-coupling half of which are mounted on the axis the forked support and the drive shaft, and the half coupling half — on the axis of the other forked support and the freely rotating driven shaft. 2. The mixer according to claim 1, characterized in that, in order to improve working conditions when working with toxic materials, it is equipped with two shields installed between the coupling halves and a hermetic case in which the drum is placed. / b 9 1511