RU2253507C1 - Planet mixer for mixing viscous materials - Google Patents

Abstract

FIELD: baking industry.

SUBSTANCE: planet mixer comprises housing (2), mixing members (9), flexible members (8), planet mechanism with carrier (4), central gear (5), and satellites (6) which engage the central gear. Mixing members (9) are eccentrically connected with balances (7) which are mounted on satellites (6) for permitting rotation with respect to them. Flexible members (8) prevent balances (7) against free rotation with respect to satellites (6). Satellite (6), balance (7) and flexible member (8) define a unit balanced with respect to the axis of satellite (6).

EFFECT: enhanced quality of mixing.

5 cl, 3 dwg

Description

The invention relates to machines for mixing various viscous materials and may find application in the baking industry for the preparation of dough and dough, in the confectionery industry for knocking down creams and protein masses, in the chemical and petrochemical industry to accelerate reactions when mixing reagents, in construction and the building materials industry for the preparation of mortars and concrete, in the pharmaceutical, paint and varnish, oil and other industries.

Known planetary mixer of viscous materials containing fixed on the bed of the bowl with a stirrer and the drive of the mixer, including a planetary mechanism and a carrier with a satellite [1].

However, in this mixer there is no vibration of the kneading organ during the mixing process, which does not allow for intensive processing of the stirred medium and self-cleaning of the kneading organ from adhering materials, which causes the motor to overload and distort the shape of the kneading organ.

Closest to the proposed one is a planetary mixer of viscous materials containing drive motors, a transmission mechanism, a housing inside which a vertical blade shaft with a rotation drive and vibration exciter in the form of planetary unbalanced gears is installed, and elastic elements are installed between the planetary vibration exciter carrier and the transmission mechanism, kneading bodies placed on the central driven shaft of the transmission mechanism [2].

The disadvantages of this mixer are:

1. The presence of only the rotational movement of the kneading organ, which significantly reduces the quality of the finished mixture and the performance of the mixer; it is almost impossible to obtain refractory foamy confectionery compositions with its help.

2. Increased starting loads on the drive motor from a jet of alternating dynamic moment created by unbalanced loads of satellites.

3. The increased mass of the structure due to the presence of unbalanced loads and units designed for increased loads.

4. The complexity of the design due to the need to use two drive motors.

The purpose of the invention is to reduce the mass of the structure, reduce the starting loads on the drive motor, improve the quality and productivity of the mixing process due to the directed and isolated vibration exposure to the mixed medium during planetary movement of the kneading organs throughout the body.

This is achieved due to the fact that in a planetary mixer of viscous materials containing a drive motor, a housing with kneading bodies located inside it, elastic elements, a transmission mechanism and a planetary mechanism, including a carrier, a central gear and gears mounted with it in gears, equipped with balances, which are connected to the satellites through elastic elements that transmit torque, the kneading bodies are fixed eccentrically on the balances, forming balanced nodes with them. In this case, the satellites can be made of different diameters; kneading bodies eccentrically installed on the balances can be mounted in pairs in antiphase; elastic elements on different satellites can be made of different stiffness; the transmission mechanism can be made in the form of a simple gear transmission, the drive gear of which is mounted on the shaft of the drive motor, and the driven gear is interlocked with the carrier of the planetary mechanism; the transmission mechanism can be made in the form of a planetary gearbox with two central gears, one of which is mounted on the shaft of the drive motor, and the other is mounted on the housing.

Figure 1, 2, 3 shows a diagram of a planetary mixer of viscous materials. Figure 1 shows an embodiment of the transmission mechanism in the form of a simple gear transmission, figure 2 - in the form of a planetary gear. Figure 3 shows the installation of satellites of different diameters and pairwise antiphase installation of kneading organs on the balances.

A planetary mixer of viscous materials (Fig. 1) contains a drive motor 1, housing 2, a transmission mechanism 3 in the form of a simple gear transmission and a planetary mechanism including a carrier 4, a central gear 5 and gears 6 mounted with it in gear, equipped with balances 7, which connected to satellites 6 through elastic elements 8; kneading bodies 9 mounted eccentrically on the balances 7. Kneading bodies 9 and balances 7 form nodes balanced relative to the axes of the satellites 6.

Figure 2 shows an embodiment of the transmission mechanism in the form of a planetary gear containing a Central gear 10 mounted on the housing.

In Fig. 3, a section A-A is shown (see Fig. 2), which shows satellites 6 of different diameters and kneading bodies 9 mounted in pairs in antiphase balances (in Fig. 3, the diameters of satellites 6 and balances forming one node are conditionally are the same).

A planetary mixer of viscous materials works as follows.

When the carrier 4 rotates from the engine 1 (Fig. 1), the satellites 6 with kneading bodies 9 make a complex movement inside the body 2. In this case, the kneading organs 9 move in a viscous medium with a variable speed, which, due to the dependence of the force of viscous resistance on speed, leads to the appearance of a variable moment on the balances 7 and causes their torsional vibrations relative to the satellites 6. The implementation of the mixer with balanced satellites 6 of different diameters provides different the frequency of processing the mixture, and the installation between the balances 7 and satellites 6 of the elastic elements 8 of different stiffness provides different amplitudes of vibrations of the kneading organs 9.

Achieved in the proposed mixer the positive effect is as follows:

1. The quality of mixing viscous materials is improved: a) due to the directed and isolated vibrational impact on the mixed medium; b) due to the complication of the trajectory of the kneading organs; c) due to the polyfrequency and with various amplitudes of the impact on the mixed medium.

2. In the planetary mechanism through the use of balanced nodes, including satellite, balance with a kneading body and an elastic element, the starting load on the engine is reduced, and the load of the bearings of the satellites from the action of inertia forces is reduced.

3. The mass and cost of the planetary mixer is reduced through the use of a single drive motor, balanced satellites and less loaded nodes, as well as by reducing the flywheel masses when they are blocked with satellites making complex movement.

Sources of information

1. USSR Copyright Certificate No. 984427, cl. A 21 C 1/02, 1982.

2. Copyright certificate of the USSR No. 371075, cl. B 28 C 5/16, 1973.

Claims (6)

1. A planetary mixer of viscous materials containing a drive motor, a housing with kneading bodies located inside it, elastic elements, a transmission mechanism and a planetary mechanism including a carrier, a central gear and gears mounted with it in engagement, characterized in that the satellites are equipped with balances that connected to the latter through elastic elements that transmit torque, and kneading bodies are fixed eccentrically on the balances, forming nodes with them, balanced relative to the axes of the satellites. 2. The planetary mixer of viscous materials according to claim 1, characterized in that the satellites are made of different diameters. 3. The planetary mixer of viscous materials according to claim 1, characterized in that the kneading bodies eccentrically mounted on the balances are mounted in antiphase in pairs. 4. The planetary mixer of viscous materials according to claim 1, characterized in that the elastic elements on different satellites are made of different stiffness. 5. The planetary mixer of viscous materials according to claim 1, characterized in that the transmission mechanism is made in the form of a simple gear transmission, the drive gear of which is mounted on the shaft of the drive motor, and the driven gear is interlocked with the carrier of the planetary mechanism. 6. The planetary mixer of viscous materials according to claim 1, characterized in that the transmission mechanism is made in the form of a planetary gearbox with two central gears, one of which is mounted on the shaft of the drive motor, and the other is mounted on the housing.

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