Horizontal roll mill

FIELD: process engineering.

SUBSTANCE: invention relates to drum-roller mills and may be used in construction, power engineering, chemical and food industries etc. Proposed mill comprises hollow cylindrical housing 1 mounted at roller bearings 2, different-diameter rolls 7, 8 arranged there inside, device to press said rolls to said housing 1 and material stepwise feeder. Said feeder combines loading device, tripping device, redirecting device and unloading device and is composed of a box 11 with displacing guides 12 and scraper 14.

EFFECT: higher efficiency of mixing, simplified design.

2 cl, 2 dwg

 

The invention relates to techniques for grinding material in a drum-roll mills and can be used in the building materials industry, energy, chemical, food and other industries.

A device for grinding material [A.S. USSR №919731, IPC VS 15/16, 1982], selected as a prototype. The device comprises a hollow cylindrical body mounted on roller bearings, roller eccentrically located, cleaning scraper, loading and unloading sites, the boot Assembly is provided with a distribution device located in the casing above the roller and made in the form of guides, mounted on axes with adjustable gap between them, each pair of which forms a partition.

A disadvantage of this device is the low efficiency and the complexity of the configuration.

The closest technical solution achieved result is a device for grinding the material [the patent of Russian Federation №2040968, IPC VS 17/10; VS 15/06; VS 15/16, 1995], selected as a prototype. The device has executed an internal circular grinding path cylindrical body is located inside the housing, a roll mounted on an axis parallel to the axis of the housing and connected with a device for clamping the roll to the grinding track, Spa yuushi knife, flat tray, mounted on roller with an angle to the plane passing through the axis of rotation of the roller and the housing. The device for clamping the roll contains hydraulic cylinders acting on the ends of the roll with the force of clamping the latter to the cylindrical housing. The tray device is divided into three independent planes, each of which is made with the possibility of rotation around the vertical axis. The material separated from the grinding track, falls on the plane and slide thereon in the direction of the larger slope. The method includes feeding comminuted material on the rotating ring of the grinding track so that the material has passed several times between the track and roller before jumping the tracks, the rotation of the material with supercritical speed, loosening material in between it passes between the roller and the track, crushing and abrasion of the material by applying force to Valka. With each passage provide the stepping movement of the material toward the discharge end of the body, and the effect on the layer of material is carried out at a pressure of 10...40 MPa.

A disadvantage of this device is the design complexity and the complexity of the system configuration, consisting of a folding knife and a flat tray. However, the presence of independent planes in a flat tray, each of which is made with the possibility of rotation around the vertical axis, leads to the presentation of the material on the grinding track in the form of jets with different thickness. In this part of the roll will not participate in the process of grinding material, which leads to low efficiency of the grinding process. The device for clamping in a single system acting simultaneously on both ends of the roll may not exclude non-parallelism of the roll and the grinding track, which leads to low efficiency of grinding.

The aim of the invention is to simplify the construction of the mill and increasing the efficiency of the grinding process.

This objective is achieved in that in the mill, containing a hollow cylindrical body mounted on roller bearings, the drive roller supports for rotation of the housing with supercritical speed, two rolls mounted inside the housing for rotation on its inner surface, a device for pressing rolls to the body and the device for the step feed of the material at the transverse movement of his body, combining the boot dropping, forwarding and unloading device made in the form of boxes with inside guides, shifting material, and scrapers, rollers made with different diameters, the first swath, along the movement, has a larger diameter will prefix is Ino grinds large pieces of material, the second roller produces the final grinding, rolls installed on the device for clamping rolls, which includes a fixed stop mounted on the frame and movable spring-loaded suspension. Device for clamping rolls also works as a protective device.

To explain the implementation of the device shown graphic materials.

Figure 1 shows the machine General view and side view;

figure 2 a section a-a design deflecting device.

Horizontal roller mill consists of a hollow cylindrical body 1 rotating at a speed above the critical mounted on rollers 2 mounted on the frame 3. The actuator housing is supplied from the motor 4 through a belt drive 5 and the drive roller 6. Installed inside the case, the work rolls 7 and 8, mounted on axles 9 and 10, with the roller 7 has a larger diameter deflecting device consisting of a deflecting surface 11 with the guides 12, the cover 13 and the scraper 14. The deflecting device is mounted on the axis 15 and is pressed against the housing 1 by means of springs 16. Rolls installed on the device for pressing the rolls, it includes a fixed stop 17 is fixed on the frame 3 and the movable spring-loaded suspension 18. The clearances between the rollers and the housing are regulated by the bolts 19. The contact force of the rolls to the body - force grinding, regulated b ltame 20. Device for clamping rolls also performs the function of the protective device, when hit uncrushed material, the rolls are lifted and miss uncrushed material without damaging the machine.

The machine operates as follows. When the cylindrical body 1 is gaining operating speed, the deflecting device through the hopper 21 continuous flow of the material is given. The cover 13 material rolls down to the first Valka 7, evenly distributed along the working clearance, pre-cut, then the material comes under the second roller and finally crushed. Tape material is pressed by centrifugal forces to the surface of the cylindrical body, enters the deflecting device is shifted and then falls under the action of the first roll, the cycle is repeated six times. The material in the mill moves in spirals. The last guide performs the function of the discharge device, removes the tape material beyond the grinding zone of the mill. The required thickness of crushed material gain, zoom in or out the suspension 18 by bolts 19, which allows to reduce or increase the gap between the casing and the rollers.

The material under the rolls after each passage between the roller and the housing, in the form of a tape of the same width, weight, eliminates the variable thickness of the grinding layer is, that is, to eliminate voids in the layer, which creates favorable conditions for intensive grinding of the material and, consequently, causes the increase of the efficiency of the grinding process. In this design the deflecting device and the device for clamping rolls simple in execution.

Thus, the purpose of the invention is achieved.

1. Horizontal roller mill, containing a hollow cylindrical body mounted on roller bearings, the drive roller supports for rotation of the housing with supercritical speed, two rolls mounted inside the housing for rotation on its inner surface, a device for pressing rolls to the body and the device for the step feed of the material at the transverse movement of his body, characterized in that the device for the step of presenting the material combines the boot dropping, forwarding and unloading device made in the form of boxes with inside guides, shifting material, and scrapers, rollers made with different diameters, the first roll in the direction of travel of the material has a larger diameter pre-grinds large pieces of material, the second roller produces the final grinding, rolls installed on the device for clamping rolls, which includes a fixed focus, fixed n the frame, and a movable spring-loaded suspension.

2. Horizontal roller mill according to claim 1, characterized in that the device for clamping rolls also works as a protective device.



 

Same patents:

Rattler // 2259884

FIELD: grinding equipment.

SUBSTANCE: proposed rattler contains hood, charge and discharge branch pipes and metal drum with metal shelves mounted for rotation around own axis, second drum coaxial with first one and enclosing first drum with clearance. Side surface of second drum is made up of steel plates placed so that longer side of plate coincides with generatrix of cylindrical surface of drum, plane of plate is orientated along radius, clearance is left between plates and metal shelves of inner drum are set at angle of 30-60 degrees to radial plane.

EFFECT: increased dispersity of ground material.

2 dwg

FIELD: methods and devices for loose materials fine grinding and mechanical activation.

SUBSTANCE: the invention is pertaining to the field of methods and devices for loose materials fine grinding and mechanical activation. The grinding is performed by impact action of the grinding bodies caused by centrifugal forces and at the relative mutual rotation of the volume with the grinding bodies and the reflecting surface. The rotation is carried out at the rates stipulating for pressing of the grinding bodies to the reflecting surface. The grinding bodies are compulsorily separated from the indicated surface and ensure their relocation under action of the inertial forces till the moment they are overpowered by the centrifugal forces. The device is characterized by the fact, that the lateral surface of the working body has a curvilinear form with an acute-angled edge and with a guiding surface for the grinding bodies. the invention allows to increase efficiency of grinding.

EFFECT: the invention ensures an increased efficiency of grinding.

42 cl, 15 dwg

FIELD: construction, mining, metallurgical, food-processing, and chemical industry, power engineering, etc.

SUBSTANCE: crusher has cylindrical hollow drum with rotational drive roll arranged eccentrically inside drum in spaced relation with respect to its inner surface. Roll is driven for rotation in direction of rotation of cylindrical drum at velocity exceeding rotational velocity of drum. Roll is made in the form of hollow perforated cylinder. Trough mounted inside roll in axially aligned relation therewith is made in the form of hollow truncated cone. At least one window is provided in trough wall for passage of ground material from roll cavity into trough cavity. During operation of grinder trough vibrates in direction extending along cone axis.

EFFECT: increased efficiency of grinder and improved quality of ground material.

2 dwg

The invention relates to the field of disintegration and grinding of rocks and ores

Rod mill // 2149686
The invention relates to a device for the grinding of mineral raw materials and semi-finished products in the building materials industry, mining and chemical industry and other industries

Mill // 2107547
The invention relates to techniques for grinding and can be used in metallurgy, construction and chemical industry

Device for grinding // 2079364
The invention relates to grinding materials, both wet and dry method and can be applied in the construction and mining industry

Drum mill // 2068735
The invention relates to designs for ball mills and can be used in the construction, mining and other industries

Drum mill // 2065771
The invention relates to techniques for grinding and drying of materials in drum mills with rollers and can be used in the construction, mining and other industries

FIELD: construction, mining, metallurgical, food-processing, and chemical industry, power engineering, etc.

SUBSTANCE: crusher has cylindrical hollow drum with rotational drive roll arranged eccentrically inside drum in spaced relation with respect to its inner surface. Roll is driven for rotation in direction of rotation of cylindrical drum at velocity exceeding rotational velocity of drum. Roll is made in the form of hollow perforated cylinder. Trough mounted inside roll in axially aligned relation therewith is made in the form of hollow truncated cone. At least one window is provided in trough wall for passage of ground material from roll cavity into trough cavity. During operation of grinder trough vibrates in direction extending along cone axis.

EFFECT: increased efficiency of grinder and improved quality of ground material.

2 dwg

FIELD: methods and devices for loose materials fine grinding and mechanical activation.

SUBSTANCE: the invention is pertaining to the field of methods and devices for loose materials fine grinding and mechanical activation. The grinding is performed by impact action of the grinding bodies caused by centrifugal forces and at the relative mutual rotation of the volume with the grinding bodies and the reflecting surface. The rotation is carried out at the rates stipulating for pressing of the grinding bodies to the reflecting surface. The grinding bodies are compulsorily separated from the indicated surface and ensure their relocation under action of the inertial forces till the moment they are overpowered by the centrifugal forces. The device is characterized by the fact, that the lateral surface of the working body has a curvilinear form with an acute-angled edge and with a guiding surface for the grinding bodies. the invention allows to increase efficiency of grinding.

EFFECT: the invention ensures an increased efficiency of grinding.

42 cl, 15 dwg

Rattler // 2259884

FIELD: grinding equipment.

SUBSTANCE: proposed rattler contains hood, charge and discharge branch pipes and metal drum with metal shelves mounted for rotation around own axis, second drum coaxial with first one and enclosing first drum with clearance. Side surface of second drum is made up of steel plates placed so that longer side of plate coincides with generatrix of cylindrical surface of drum, plane of plate is orientated along radius, clearance is left between plates and metal shelves of inner drum are set at angle of 30-60 degrees to radial plane.

EFFECT: increased dispersity of ground material.

2 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to drum-roller mills and may be used in construction, power engineering, chemical and food industries etc. Proposed mill comprises hollow cylindrical housing 1 mounted at roller bearings 2, different-diameter rolls 7, 8 arranged there inside, device to press said rolls to said housing 1 and material stepwise feeder. Said feeder combines loading device, tripping device, redirecting device and unloading device and is composed of a box 11 with displacing guides 12 and scraper 14.

EFFECT: higher efficiency of mixing, simplified design.

2 cl, 2 dwg

FIELD: technological processes.

SUBSTANCE: at first loose material particles are destroyed with kinetic energy of the grinding bodies of the rotating rotor 5, and then the destroyed particles falling into a gap between the outer surface of the grinding bodies and the inner working surface of the rotating grinding chamber 1 are triturated. When grinding loose material rotor 5 and grinding chamber 1 are rotated unidirectionally. Rotor 5 is rotated at a speed so that the grinded loose material layer is pressed against the working surface of the grinding chamber 1 under the centripetal force of rotor 5 rotation and grinding chamber 1 - at a speed providing decrease of the temperature in the chamber up to the accepted values of the grinding loose material temperature and grinding bodies. The device for grinding comprises a grinding cylindrical chamber 1, within which there are grinding bodies rotors with electromechanical rotation drive 9 of the chamber 1 and rotor 5 rotation. Rotation drive 9 is made with possibility to unidirectionally rotate grinding chamber 1 and rotor 5 at different sped of 50 to 500 rpm. Rotor 5 comprises shaft 4 with radial rods, the free ends of which are secured with grinding bodies.

EFFECT: method and device increase reliability of the mill working elements and also reduce overheating and destruction of the grinding results by reducing the operating temperature in the grinding mill chamber.

5 cl, 4 dwg, 1 tbl

FIELD: mining engineering.

SUBSTANCE: feeder-crusher comprises a frame forming a receiving end and a discharge end, a conveyor attached to the frame for moving the raw material from receiving end to discharge end, and a crusher attached to the frame between receiving and discharge ends for processing raw materials. Crusher includes a holder having an opening for cutter, running along the longitudinal axis of holder, and an opening for a pin, located across the opening for cutter and crossing the cutter holding device. The cutter has a cutting part, a bar, and a recess made in the bar. Wherein, when the bar is held in the opening for cutter, the said recess is aligned with the pin opening. The holding device is designed to hold the cutter in holder and comprises a pin, freely disposed in said pin opening and recess with engagement with cutter, and an integral plug inserted into the pin opening and having a dimension that provides its resilient engagement with holder. In this case, the plug substantially insulates and holds the pin in said pin opening. The said pin is located in the pin opening in unsecured condition.

EFFECT: protection of connecting element against corrosion and easy replacement of cutter.

38 cl, 9 dwg

Up!