SU512810A1 - Apparatus for cooling and cleaning the surface of rolling rolls - Google Patents

Description

one

j The invention relates to the field of production of cat-made and can be used for cooling and cleaning the shaft. - -. h

Rolling, pre-roll sheet mill. A device for cooling and cleaning the rolls of a rolling mill is known, comprising a box-type chamber with scraper partitions forming channels for coolant flows, having seals along the contour of contact with the roller, and a coolant supply and discharge system.

The disadvantage of such a device is e-: with low efficiency of use of the ogla. dtel and uneven cooling along the length of the roll barrel.

The described device differs from the well-known in that its chamber contains finned heat exchangers made of copper alloy, which are contacted with the surface: barrels, rollers and equipped with a pressure system made in the form of a partitioned pillow made of an elastic material filled with compressed B03Ayhohi, the surface interacts with the rods and heat -;

; exchangers. This ensures a higher effect than 2; the use of the cooler, contact with adjustable pressing of all heat exchangers with the surface of the roll, cleaning and copper coating of the surface of the roll during the process.

On fng. 1 shows a general view of the proposed device; in fig. 2 - the same, | vnd front; in fig. 3 is a section through pi A-A in FIG. one; in fig. 4 - heat exchanger with rod and pressure washer.

The device includes a box-type camera of type 1, open on one side. Chamber | partition 1 partition 2 is divided into two {compartments: workplace B and distribution B. Inside the work compartment B along its open side, mix up copper orehrannyh terebm: lkov 3. Heat exchangers secured: Hiai sia ends of steel rods 4 Pressure washers 5 are fastened on the transverse side of the rods 4. The rods 4 are passed through the holes in the two perforated metal walls 3 and can freely mix along their axes. Stenk 6fixirk.t arrangement of these. OSRY Holes in the wall, not open (they ensure the convection of the cooler at the surfaces of the roll and heat exchangers 3). Elastic pad 7, filled with compressed air, cooperates with pressure washers 5. It can create an adjustable heat exchanger 3 to the roll. The sysaty air into the pillow 7 is supplied through the air inlets 8. The edges of the chamber .1 are curved (according to the roll profile) and fitted with a seal 9 of elastic material. The seal 9 prevents leakage and cool The device operates as follows: The edge of chamber 1, fitted with a seal 9, is pressed against the surface of the roll. Compressed air is blown into the pillow through the sleeves 8. Compressed air is pressed through the system of pressure washers 5 and rods 4, fixed by walls 6, are transferred by heat exchangers 3, which fit snugly to the roll. Because the cushion is made of elastic material and can take any form, all the heat exchangers resting on one of its sections This force, regardless of the shape of the roll surface and the speed of its rotation. The degree of pressure created by the KB1 section of the pillow is different and depends on the air pressure in it. The friction between heat exchangers 3 and the roll leads to the transfer of a part of their material to a roll surface: the roll is covered with a thin layer of copper alloy. The heat exchangers 3, (in contact with the cooling surface, are heated. The cooling liquid through the supply lines 10 nx; blunt to the distribution section B. Here the flows from different supply lines are mixed so that the uniform length P of the regorca flows from the edge of the partition 2 The liquid that boils is formed on the hot surfaces of the roll and the heat exchangers. The vapor-liquid mixture that is formed is removed through the outlets 1 The cooling efficiency increases with a developed bubble boil due to an increase in the surface of the air the vapor of the evaporation cooling melts; at the film boiling near the heat exchange crisis, the stability of the steam film is disturbed - the boil crisis at the O = i) thermal and non-thermal nLinoji lays in the direction of the big ng: -t1; 1 h, h in the aegean regimes) to change, hrrsh (era circulating around near the edge; ix: - these weeks - appear significant - the flows, perpsindi.kulrnye this surface and penetrating deep into the liquid. The surface of the roll is cleaned during its movements by friction against heat exchangers. Image: Yush, and on the surface of the roll, a film of copper alloy. It serves as a kind of technological lubricant, reducing the surface wear. The cooling intensity is regulated by the way / wi change the air pressure in the pillow. The presence of several sections in the cushion makes it possible to create a non-uniform cooling roll. goiter shadows about pm-aa and 1. Arrangement for cooling and cleaning the surface of rolled rollers, containing a box-like chamber with partitions, seals along the contact contour with a roller to the inlet system and discharging a cooler, characterized in that Using coolant to clean the surface of the roll and increase its durability, heat exchangers are in contact with the chamber, interacting with the surface of the roll and equipped with a clamping system. 2. A pop device, 1, characterized in that, in order to increase the efficiency of using the cooler, the heat exchangers are ribbed. 3. The device according to p.1,2, which is distinguished by the fact that, in order to increase the resistance of the rolls, heat exchangers are made of copper alloy. 4. The device according to claim 1, characterized by the fact that, in order to ensure the contact of the heat exchangers with the roller when its diameter changes or when it is worn, the pressure system is made in the form of an elastic material trap filled with compressed air, the surface of which interacts with the rods heat exchangers, 5. The device for pcs. 1 and 4, that is, in order to control the cooling along the length of the roll barrel, the cushion is made sectioned with a separate supply to each SRHINI adjustable pressure.

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