RU1821288C - Mixer - Google Patents

Abstract

Usage: in the foundry, for the preparation of mixtures, suspensions, paints from liquid, pulverized and granular materials. SUMMARY OF THE INVENTION: a mixer with a planetary drive on the side of the loading part of the mixing working chamber is provided with additional support, while the longitudinal axis of the mixing working chamber is located at an angle to the axis of the carrier, and the planetary drive with the carrier are mounted on the side of the unloading part of the mixing working chamber s, item. f-ly, 2 ill.

Description

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The invention relates to foundry and can be used in the preparation of mixtures, suspensions and paints from liquid, dusty and granular materials.

In order to reduce the diameter of the inlet of the mixing chamber and increase productivity, the mixer offers to rotate the chamber and drove the carrier in the zone of the inlet of the chamber. In this zone, make an additional support of the chamber in the form of a spherical bearing, and drive the rotation of the chamber in the form of a bevel gear with internal gearing.

The drawing shows a diagram of a vertical section of the mixer. In the housing 1 on the bearing 2 there is a carrier 3 driven by a V-belt drive from the electric motor 4 and the pulley 5. In the bearing 6 of the carrier 3 there is an output part of the mixing chamber, the input part of the chamber 7 is covered by a spherical bearing 8, the housing of which 9 is located in the mixer housing 1 . Cone part

10 of the chamber passes into a working cylindrical 11, limited by the outlet cone 12, the continuation of which is the outlet part 13. A counterweight is mounted on the carrier 14. The gear wheel 15 is mounted on the chamber and is engaged with the gear ring 16 fixed in the mixer body 1. The outlet neck 13 is pumped by the collector 17 for collecting the finished mixture, which is discharged through estrus 18. The dry ingredients of the mixture are loaded by estrus 19 and the liquid ones are fed via pipe 20. The narrowing 21 of the chamber divides it into pre-mixing zones 22 and final 23 The mixer is mounted on shock absorbers 24. The operation of the mixer is as follows.

The mixer is installed obliquely in the direction of delivery of the mixture. The supply of dry liquid ingredients of the mixture is turned on and the carrier is rotated. Due to the running in the gear wheel 15 of the crown 16, the planetary rotation of the mixing

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chamber 3 The chamber rotates around the axis of the carrier and its own axis 26. In this case, the dry ingredients are centrifugally pressed against the wall of the mixer chamber and mixed due to the variable component of planetary rotation. Dry mixing takes place in pre-mixing zone 22, and mixing the ingredients with liquid additives 4 in the final mixing zone 23. The bulk of the mixed mixture is concentrated here. The finished mixture through the cone 12 and the outlet part 13 is discharged into the casing 17. from where it enters the consumer. The rotation speed of the carrier 3 is selected taking into account the properties of the mixture, however, it must be such that the mixture is always centrifugally pressed against the chamber wall, i.e. the minimum gravitational coefficient should be similar to centrifugal casting 19 (see S.V.Bdin et al. Centrifugal casting, Moscow: Mashinostroenie, 1962 - p. 78). The performance of the mixer is determined by the energy required to produce the mixture. According to S. S. Zhukovsky (see Strength of the mold, M., Mashinostroenie. 1989, p. 13), for cold-hardening mixtures, the bias energy is 1.5 Wh / kg. As shown by a laboratory experiment on a planetary mixer, at a rotation frequency of 500 rpm and a chamber of 120 rpm, a mass of 1 kg was prepared in 10 s, while the indicated energy was consumed. In the case of the capacity of the working chamber, we dare 1 kg while feeding the feed materials with a flow rate of 100 g / s, this mixture can be prepared. Moreover, the mixer capacity will be 260 kg / t. Estimated energy consumption per process 300 watts.

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The mixer of the proposed design is easy to set up, differs in simplicity and accessibility of servicing the working chamber, the possibility of sequential preparation of the mixture: dry mixing - mixing with liquid additives The speed of preparation of mixtures allows the mixer to be used for mixtures with low survivability. Due to the low capacity of the mixer, friction energy losses are reduced. Vibration of the housing during operation of the mixer helps to prevent stagnation of the ingredients in the loading and output devices. All of the above will also be reflected in improving the quality of the prepared mixture and in eliminating the losses of the mixture. The mixer does not emit dust and vapor of liquid additives into the surrounding space.

Claims (2)

1. A mixer comprising a housing, a planetary drive with a support, a bearing assembly and a carrier, a loading nozzle and a mixing working chamber with loading and unloading parts, a torn and so on. in order to increase productivity, it is provided with an additional support on the side of the mixing part of the mixing working chamber, while the longitudinal axis of rotation of the mixing working chamber is located at an angle to the axis of the carrier with the point of intersection of these two axes in the additional support and the planetary drive with the carrier are mounted on the side of the unloading part mixing working chamber. 2. The mixer according to claim 1, with the exception that the additional support is made in the form of a housing with a spherical bearing.