RU2112598C1 - Rolling machine - Google Patents

Abstract

FIELD: flour-milling industry, in particular, grain grinding equipment. SUBSTANCE: rolling machine has housing of rigid box-shaped construction having movable part with low-speed rotating roll and movable part with high-speed roll. Part with low-speed rotating roll is mounted on shaft for rocking about box-shaped construction within immovable part. Charging hopper is rigidly connected with feeding shaft carrying frictional disk cooperating with high-speed roll mounted within immovable part of housing. Charging hopper is mounted axially of immovable part of housing for rocking about it. Adjusting bolt fixed on side wall outside charging hopper is engageable with thrust secured on side wall of movable part of housing. Rolling machine is further provided with dumping mechanism having screw device cooperating through wedge with adjustable support. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 3 cl, 3 dwg

Description

 The invention relates to a modular elevator industry, in particular to devices for grinding bulk products, mainly grain.

 A roll mill for grinding grain and other products is known, containing a bed, pairwise working rolls rotating at different speeds, the mechanism of the dump-blade of a slowly rotating roll, articulated on elastically movable axles, and a drive device containing an electric motor and flexible gears (see AS USSR N 417156, class B 02 C 4/06).

 A roller mill is also known, which contains a pair of small rollers, a feed device and an automatic control system for the stop-dump of the grinding rollers and a shutter with a sensor located in the hopper and having lipes, the sensor being connected to the shutter using a lever system, an additional sensor is mounted on one of the latter made elastic, and the lever connected to the valve is spring-loaded and equipped with a mechanism for adjusting the tension of the springs (see AS USSR N 527202, class B 02 C 4/38).

 A disadvantage of the known devices is that the loading machine, the mechanism for adjusting the gap between the rolls are quite difficult to manufacture and unreliable in operation.

 Closest to the technical nature of the claimed device is a device for crushing and grinding grain (see AS USSR N 1213977, CL B 02 C 4/02), containing a housing mounted in it at least one set of drive with different the peripheral speed of the rolls, the axis of each of which is fixed in the bearing units, and a mechanism for regulating the gap between the rollers and for protecting the rolls from foreign bodies, the supporting frame of the set of rolls installed in the housing and connected to it, and the mechanism for adjusting the clearance and bearing nodes of the axes of the rolls are mounted on the frame.

 A disadvantage of the closest analogue is also the low reliability of the machine due to the imperfect design of the loading mechanism and the clearance adjustment mechanism.

 The aim of the invention is to simplify the design of the machine due to the simplification of the loading mechanism and the adjustment mechanism of the roll gap, and therefore, improving the reliability of the machine.

 This goal is achieved by the fact that the body of the machine, containing paired rolls rotating at different speeds, the loading mechanism, the blade-blade mechanism of the slowly rotating roll, the mechanism for adjusting the gap between the rolls, is made in the form of a box-like structure consisting of two parts: movable with slow a rotating roller mounted on an axis with the possibility of rolling around it inside the fixed part of the housing, and fixed - with a rapidly rotating roller and a loading hopper rigidly connected to the feeder shaft, sleep a friction disk interacting with a rapidly rotating roller mounted on the axis of the fixed part of the housing with the possibility of swinging around it, and the mechanism of the dump-blade of a slowly rotating roller is additionally equipped with a screw device that interacts through a wedge with an adjustable support, and on the side wall of the loading hopper there is an adjustment a bolt interacting with a stop fixed on the side wall of the movable part of the housing, and a spring regulating the pressing force of the friction disk of the shaft-pit of Tell hopper to the shaft of a rapidly rotating roll while in the walls of the body are made blow-holes.

 Comparative analysis with the closest analogue shows that the inventive device has a new design of the mechanism for adjusting the gap between the rollers and the loading mechanism of the machine.

 Introduction to the machine of new elements and ensures the novelty of the claimed device and allows to achieve a new technical result, which consists in simplifying the design of the machine and increasing the reliability of its operation.

 In FIG. 1 presents a General view of the inventive machine. In FIG. 2 shows a view along arrow A in FIG. 1, through holes on the roll. In FIG. 3 shows a view along arrow B in FIG. 1, a mechanism for adjusting the roll gap.

 The roller mill includes a bed 1, on which a fixed 2 and a movable 3 part of the body are mounted.

 In the stationary part of the housing in the thrust bearings, a rapidly rotating roller 4 with a pulley 5 is installed. In the movable part of the housing, a slowly rotating roller 6 is also installed in the thrust bearings in the thrust bearings. The rollers are interconnected by means of gears 7 and 8.

 The movable part of the housing is installed inside the stationary on the axis 9 and has the ability to swing around it.

 On the fixed part of the housing on the axis 10, a loading hopper 11 is mounted rigidly connected to the feeder shaft 22 and the friction disk 12 kinematically connected to the rapidly rotating roller 4.

 The degree of pressing of the friction disk 12 to the rapidly rotating roll 4 is regulated by an elastic clamping device 13.

 The adjusting bolt 14 of the loading hopper 11 interacts with the stop 15 of the movable part of the housing 3.

 In FIG. 3 shows a mechanism for smoothly adjusting the clearance between the rolls. It contains an adjustable support 16 on the movable part of the body, which springs 17 interacts with a wedge 18, rigidly connected with a screw device 19 of the fixed part of the body.

 Adjustable bearings 20 protect the rolls from contact.

 The nozzles 21 are used to remove warm air from the inner cavity of the rolls through the purge holes in the movable and fixed parts of the housing.

 Roller machine operates as follows.

 Rotation from the electric motor through the pulley 5 is transmitted to the rapidly rotating roller 4, and from it with the help of gears 7, 8 to the slowly rotating roller 6 and through the friction disk 12, connected to the roller 4, to the feeder shaft of the feed hopper 11.

 Coarse and smooth adjustment of the roll gap is carried out by a screw device 19 (see Fig. 3), interacting with a wedge 18, the inclined surface of which presses on the adjustable support 16 of the moving part of the housing by the force of tension springs 17. One revolution of the screw device 19 measures the gap between the rolls by 0 , 01 mm.

 Adjustable bearings 20, interacting with the fixed part of the housing, are adjusted to the minimum allowable gap between the rollers, which protects them from contact.

 When the machine is overloaded, the grain pressure on the rolls increases and, overcoming the force of the springs 17, increases the gap between the rolls. In this case, the movable part of the body deviates to the left around the axis 9 and presses the adjusting bolt 14 with the stop 15, thereby removing the friction disk 12 from contact with the rapidly rotating roller 4. As a result, the feeder shaft stops, stopping the supply of grain products for grinding.

 To maintain a constant temperature inside the rolls, purge holes were made in the walls of both parts of the housing in the immediate vicinity of the ends of both rolls.

 Through the outer circumference of the ends, through holes are made in the rolls body.

 The technical effect of the proposed solution is to simplify the design of the roller mill due to the peculiarities of loading mechanisms and adjusting the roll gap, as well as by placing a slowly rotating roll in a movable box-type structure. This also ensures parallelism of the axes of the rolls. All this increases the reliability of the machine compared with the known analogues and prototype.

 The introduction of the bolt of the loading hopper and the stop of the movable part of the housing prevents the machine from breaking down.

 Reliability is ensured by maintaining a constant temperature in the working area of the rolls.

 All of these qualities of the claimed machine compares favorably with the closest analogue.

 The inventive machine can be manufactured under normal conditions of a mechanical workshop from common grades of steel and cast iron structures.

 At present, an experimental batch of machine tools has been manufactured, which has successfully passed the tests of a mill complex for farms.

Claims (3)

 1. Roller mill, comprising a housing, paired rolls rotating at different speeds, a loading mechanism, a blade mechanism of a blade of a slowly rotating roll, a mechanism for adjusting the gap between the rolls, characterized in that the machine body is made in the form of a box structure, consisting of two parts : movable with a slowly rotating roller mounted on an axis with the possibility of swinging around it inside the stationary part of the housing, and stationary with a rapidly rotating roller, and a loading hopper rigidly connected to the feed shaft a device equipped with a friction disk interacting with a rapidly rotating roller is mounted on the axis of the fixed part of the housing with the possibility of swinging around it, and on the side wall of the loading hopper there is an adjusting bolt interacting with the stop mounted on the moving part of the housing, in addition, the dump mechanism the halt of a slowly rotating roll is additionally equipped with a screw device that interacts through a wedge with adjustable supports.  2. The machine according to claim 1, characterized in that the rolls are made with through holes located at the ends of the rolls.  3. The machine according to claim 1, characterized in that the purge holes are made in the machine body in the immediate vicinity of the ends of the rolls.

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