RU2015729C1 - Grinder - Google Patents

Abstract

FIELD: mining industry. SUBSTANCE: device has hermetically sealed housing which accommodates rotors with grinding members installed for rotation in opposite directions. Grinding members are made in form of springs. Every other spring has opposite hand of helix. Some flanges are mechanically coupled with drive, others are arranged eccentrically relative to each other for engagement with each other. EFFECT: enlarged operating capabilities. 3 dwg

Description

 The invention relates to the mining industry and is intended for grinding rocks, and can also be used in other industries for grinding and mixing substances, obtaining emulsions and synthesis of material.

 Known chopper, comprising a housing with loading and bypass holes, two rotors with grinding bodies rotating in opposite directions [1].

 The closest technical solution is a grinder, comprising a housing with loading and unloading holes, in which two rotors with grinding elements in the form of springs and a drive are placed for rotation in opposite directions [2].

 The disadvantage of these devices is the low quality of grinding.

 The aim of the invention is to improve product quality by increasing the surface of the working elements involved in grinding, the complex dynamics of the grinding process, the possibility of separation of the product.

 This goal is achieved in that the rotors are made in the form of springs installed around the circumference of the springs between the flanges, wound through one in opposite directions, with some flanges connected to the drive, and others made eccentric and with the possibility of interaction with each other.

 These features allow you to consistently grind coarse rock between the springs of the rotors, rotors and the housing, the coils of the springs of the rotors and to separate the rock of the required dispersion.

 Design features determine the work of the working body and ensure the dynamics of the process.

 In FIG. 1 shows a chopper, a longitudinal section; in FIG. 2 is a section along AA in FIG. 1; in FIG. 3 is a section along BB in FIG. 1.

 The chopper contains a sealed housing 1 with a feed opening 2 for supplying dispersible material 3 and fittings 4 for supplying and discharging a medium, for example, inert gas.

 In the housing 1, rotors X and Y are installed, consisting of flanges 5 and 6 and 7 and 8, respectively, with circumferentially mounted between them with the possibility of rotation about their own axis on the guide flanges 9 and 10, springs 11, wound through one in opposite directions.

 The flange 5 of the rotor "X" connected to the drive (not shown) through the shaft 12 mounted on the bearings 13 and the pulley 14 is kinematically connected through gears 15 and 16, the shaft 17 mounted on the bearings 18 - with the flange 7 of the rotor "Y" .

 Flanges 6 and 8 are made eccentric and provide interaction with each other rotors "X" and "Y", and also interact with the respective shafts 12 and 17 through springs 19 and nuts 20.

 Separators 21 with a fan (not shown) are mounted on shafts 12 and 17.

 The chopper works as follows.

 When you turn on the drive (not shown), the rotation is transmitted through the pulley 14, the shaft 12 to the flange 5, and therefore the rotor "X", and from the shaft 12 through the gears 15 and 16 to the shaft 17, to the flange 7, and therefore the rotor "Y", providing rotation of the rotor "X" and "Y" in opposite directions.

 The rotation of the flanges 5 and 7 through the springs 11 is transmitted to the flanges 6 and 8, which, due to their interaction with each other due to their eccentricity, cause oscillations in the elements of the rotors "X" and "Y", changing the gaps between: rotors, rotors and the body, as well as turns springs.

 Centrifugal forces bend the springs 11 from the center of rotation of the shafts 12 and 17, pressing them to the housing 1 and to each other in the contact zone of the rotors "X" and "Y" and prevent large pieces of material 3 from falling into the gap between the springs 11 and the housing 1.

 The rotation of the springs 11 around its own axis allows the gap to be displaced between the turns, providing for the retraction and grinding of the material 3.

 Material 3 enters through the loading hole 2 into the working chamber, where it interacts with the springs 11 of the rotors "X" and "Y".

 The grinding of material 3 occurs as a result of interaction with the springs 11 of the rotors "X" and "Y" in the spaces between the rotors and the housing, between the turns of the springs, depending on the fraction of the material.

 The crushed material under the influence of a gas stream amplified by a fan (not shown) ultimately ends up in the internal cavities of the springs 11, from where it is discharged through holes 9 made in flanges 5 and 7, using the same gas stream into gas filters 21, in which accumulates, and the gas again enters the pipe 4.

 The size adjustment of the fraction of the final product is carried out using a nut 20, which controls the clearance between the coils of the springs 11, as well as by adjusting the speed of rotation of the rotors "X" and "Y" (centrifugal force adjustment).

 This design allows for high-quality grinding of material both in continuous and in partial mode, with the required degree and a wide range of grinding.

Claims (1)

 GRINDER, comprising a housing with loading and unloading openings, in which two rotors with grinding elements in the form of springs and a drive are arranged for rotation in opposite directions, characterized in that the grinder is equipped with flanges and additional grinding elements in the form of springs mounted circumferentially on the rotors between the flanges, while the springs through one are wound in opposite directions, with some flanges kinematically connected to the drive, while others are eccentric to each other awn interaction with each other.

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