RU1775158C - Mixer - Google Patents

Abstract

Usage: mixing bulk materials. The mixer contains tubular elastic chambers made of double spiral rows, a hollow drum with a drive, which has screw grooves inside. Double spiral rows are separated by flexible disks. The components through the nozzle enter the hollow drum into the helical grooves, mixing on them, then into the double helical row, again go into the helical grooves, and then again into the double helical row, etc. The mixing efficiency is improved by increasing the path of the material. 1 ill.

Description

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WITH

The invention relates to equipment for the chemical, food and other industries, and is intended for mixing bulk materials.

A known mixer comprising an elastic pipe with loading and unloading holes and a working body with cylindrical rollers and a drive. Mixing occurs due to the rotational movement of the material from the loading to the discharge opening in the elastic pipe.

The disadvantage of the mixer is the movement and mixing of the components of the mixture only in planes perpendicular to the axis of the pipe, and the inability to mix along the axis, since material moves in only one direction. Therefore, due to the lack of intense compressive forces, the unidirectional movement of the material and the small contact surface area of the components to be mixed with the elastic pipe, the quality of the mixture is poor.

A mixer is known, comprising an elastic pipe arranged along a helical line with loading and unloading openings located between the upper and lower walls, a working body with cylindrical rollers and a drive, and a shell of vertically mounted rods.

The disadvantage of this device is the inability to intensify the process (increase productivity) due to the difficulty of increasing the speed of rotation of the working body, associated with a sharp deterioration in the quality of the final product, because Roller running only inside elastic XJ XI

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a pipe located along a helical line, causes the appearance of stagnant zones of material in the places adjacent to its outer part (periodic pressing of the shell rods into the elastic pipe in strictly defined places, which occurs when the helical line is rolled inside, does not cause the material to be involved in the process mixing along the entire length of the abutment to the outer part of the elastic pipe).

A known air dryer-mixer for two dispersed components, comprising nozzles for supplying and discharging components and coolant, spiral chambers and cheeks. The mixing is carried out by feeding the components and coolant into the spiral chambers.

A drawback of this design is the need for special devices to separate the mixture of components from the air at the outlet of the chambers.

The closest in design features adopted for the prototype is a mixer containing a tubular elastic chamber, helically curved into several alternating series of elliptical coils from center to periphery and from periphery to center. The camera is equipped with a shock mechanism.

The disadvantage of this design is the impossibility of using multicomponent mixtures for mixing, the impossibility of introducing materials at intermediate stages of processing. It is difficult to analyze the nature of mixing at different stages of mixing, to take material samples. Difficulty in carrying out the process of drying the mixture, if necessary.

The aim of the present invention is to remedy these drawbacks and provide a device for the purpose of intensifying the mixing process.

This goal is achieved in that the mixer contains a tubular elastic chamber, curved in a spiral in several alternating rows of windings from center to periphery and from periphery to center and placed on the hollow drum, while the hollow drum is made with internal helical grooves and has windows for connecting a tubular chamber, and the tubular chamber is made of double spiral rows separated by deforming disks,

The drawing shows a mixer containing tubular elastic chambers 1,2,3,4,5,6, curved in a spiral, a hollow drum 7, made with internal screw grooves 8. The hollow drum 7

has windows 9 for connecting tubular chambers. Double spiral rows of tubular chambers are separated by deforming disks 10, 11, 12, 13 located on the outer surface of the hollow drum 7. The deforming disks 10, 11, 12, 13 are fixed on the hollow drum 7 by a nut 14. The hollow drum 7 is supported at one end by a support 15 through the rolling bearings 16, and to the other through the bearings 17 through the bearings 18 and is driven into rotation from the drive through the pulley 19. On the support 17 there are nozzles 20 for supplying the components. In one of the nozzles is a pipe 21 for supplying a liquid component. The bearings 15 and 17 are welded to the bed 22. The rolling bearings 16 are pressed by the cover 23. and the pulley 19 is the end washer 24. In the hollow drum 7 there is a window 25 for the components to exit after mixing.

The mixer operates as follows. The components along the supply nozzles 20 and the pipe 21 enter the hollow shaft 7 onto the screw grooves 8, from which through the window 9 they enter the tubular elastic chamber 1, curved in a spiral from the center to the periphery. Bulk material moves in the same direction. The mixing of the material is due to the movement in a spiral and rotation around a horizontal axis. The material, approaching the periphery, goes into a spiral 2 and moves from the periphery to the center, and then spills out through the window into the inside of the hollow drum 7 onto the screw grooves 8, in which it is mixed again and falls into the tubular chamber 3. Here again it moves from the center to the periphery, and then vice versa: from the periphery to the center - and spills out in a spiral 4 into the inside of the drum 7, From the screw grooves 8 enters the chamber 5 and 6, and then through the window 25 the mixture is poured into the hopper. At a certain mixing phase in this design, it is possible to introduce a liquid component or a solid through pipe 21. It is possible to introduce several components at intermediate stages of mixing. The implementation of the hollow drum 7 with internal helical grooves 8 makes it possible to intensify the mixing process, conduct intermediate analyzes of the mixture, and introduce new components. The material, moving along the helical grooves 8, is additionally mixed and receives a directed movement into the subsequent double spiral rows.

The winding of double helical rows in the direction from the center to the periphery, and then from the periphery to the center increases the path of the material and allows the material to participate in a complex movement, which improves the quality of mixing.

Changing the ovality of the tubular elastic chambers 1, 2, 3, 4, 5, 6 in cross section, carried out by introducing deforming disks 10, 11, 12, 13 into the device, allows turbulence of the flow of mixed components, provides mixing both along the tube axis and in the transverse direction, which ultimately contributes to improved mixing, improves the quality of the mixture. With the deformation of tubular elastic spi10

Claims (1)

The combination of all the above structural elements contributes to the production of a high quality mixture. SUMMARY OF THE INVENTION A mixer comprising a tubular elastic chamber, spirally bent in several alternating rows from center to periphery and from periphery to center and placed on the hollow drum to rotate about a horizontal axis, characterized in that. in order to increase mixing efficiency, the drum is equipped with flexible disks mounted on its outer In the case of chambers, a change occurs in the surface, dividing the tubular caries of the component movements at different points of the chambers; the presence of peeoecal pulsations of bulk materials contributes to the production of a high-quality mixture. measure for double spiral rows, the drum being made with internal helical grooves and windows connecting it to the tubular chamber. 0 The combination of all the above structural elements contributes to the production of a high quality mixture. SUMMARY OF THE INVENTION A mixer comprising a tubular elastic chamber, spirally bent in several alternating rows from center to periphery and from periphery to center and placed on the hollow drum to rotate about a horizontal axis, characterized in that. in order to increase mixing efficiency, the drum is equipped with flexible disks mounted on its outer 5 surfaces dividing the tubular cap surface, dividing the tubular chamber into double spiral rows, the drum being made with internal helical grooves and windows connecting it to the tubular chamber.