SU142297A1 - Bitumen Emulsion Mixer - Google Patents

Description

Mixers for bitumen emulsions are known, which include a stator, a single-disk rotor, as well as a loading chamber and an actuator.

However, these mixers have low productivity.

A distinctive feature of the described mixer is that the stator and the rotor are equipped with concentric grooves and internal channels.

A mixer of this design has higher productivity and increases the degree of dispersion of raw materials.

FIG. 1 shows a longitudinal section of a mixer for bitumen emulsions; in fig. 2 - stator in two projections; in fig. 3-rotor in two projections.

The bearing 2 for the bearing 5 of the shaft 4 of the rotor 5 is welded inside the housing. In the upper part of the housing, the stator 6 is screwed onto the threads.

The stator is a disk, on the ends of which there are small and large concentric trapezoidal recesses 7 and 5 interconnected by vertical channels 9. The side walls of the large recesses are the working surfaces of the stator, and its small recesses and vertical channels are designed to supply the original MaTepHavTOB bitumen to the working surfaces of the mixer.

In the lower part of the stator, a thread 10 is threaded for screwing it onto the housing 1, and in the upper part - a thread // for screwing the boot 12 (hopper) into the stator.

The rotor is made in the form of a disk, the hub of which 13, designed to fit the rotor on the shaft 4, is made conical. In the upper part of the rotor disk there are concentric trapezoidal recesses 4, and in the lower part radial channels 15 communicating with the recesses by means of vertical channels 16. The side walls of the trapezoidal recesses are the working surfaces of the rotor. In the working position, the protrusions of the stator enter the rotor undercuts and vice versa.

No. 142297-2-a lateral ui form conical working slots. The adjustment of the size of the inoperative slits is carried out by the vertical displacement of the stator. , iiif ..: .. s,

The working clearance is secured by a lock nut 17 provided with -rules / 8.

The rotor was mounted on the conical part 19 of the shaft 4, which rests on two radial ball bearings 5 and the thrust ball bearings 20. A stand 21 was screwed onto the upper threaded end of the shaft, on which the distributor 22 was fixed, designed to evenly distribute and pre-mix the raw materials in the chamber 23 . At the lower end of the shaft reinforced pulley 24 V-belt transmission.

To heat the mixer during operation, its stator is equipped with a steam line 25.

The bitumen and the aqueous solution of the emulsifier, heated to a certain temperature, are fed through a bunker into the receiving chamber, from where they are fed through small recesses and vertical channels into the slots between the stator and the rotor. An intensive grinding of bitumen droplets and its emulsification occur in the working chambers. From the working gaps, the emulsion is fed into the vertical and horizontal channels of the rotor, where under the action of the centrifugal force developed by the rotor, the emulsion is ejected into the internal chamber of the device. From the inner chamber of the mixer, an emulsion is discharged through pipe 26 to the production sites.

Subject invention

A bitumen emulsion mixer consisting of a stator, a single-disc multislot rotor, a loading chamber and an actuator, characterized in that concentric recesses and internal channels are made to increase the mixer performance and increase the degree of dispersion of raw materials in the body of the rotor and stator.

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