SU1353551A1 - Arrangement for cleaning wire - Google Patents

Abstract

The invention relates to the field of metallurgy and can be used in the manufacture of wire. The purpose of the invention is to improve the quality of wire cleaning. The cleaning is carried out in a drum 1, which is staggered. The centers of the stages 2-5 are offset relative to the axis of rotation of the drum and are evenly distributed around it along a helix. The drum can be made with two groups of stages, the centers of which are placed on the screws of the opposite direction. When the drum rotates, the working cleaning medium is transferred from one stage to another. This allows the medium to move both in the radial and axial directions. The intensity of the mixing medium increases. The tunnel effect is eliminated. 2 hp f-ly, 3 ill. cl

Description

The invention relates to metallurgy and can be used in the manufacture of wire.

The purpose of the invention is to improve the quality of wire cleaning.

Fig. 1 is a diagram of a wire cleaning apparatus; figure 2 is a view of And figure 1; Fig. 3 is a diagram of a drum of a wire cleaning apparatus consisting of two groups of stages, the centers of which are located on screw lines with different directions.

The device for cleaning the wire includes a drum 1 which is filled with a stepped one. The centers of the steps 2-5 of the drum 1 are offset relative to the axis of rotation of the drum and are evenly distributed around it along a helical line. On the axis of rotation of the drum there are 6 input and output 7 guides, which are also the trunnions of drum 1. The drum 1 is mounted with the pivots 6 and 7 in the housing 8 so as to be rotatable. The rotation is carried out by the pulley 9. The drum 1 has openings closed by hatches 10. The holes are intended to fill the drum 1 with a working medium — an abrasive in the form of a crumb of hard materials, metal chips, shot, etc.

The drum can be made with two groups of steps; the centers of some steps of which are located on the right helix 11, and the centers of the other steps of group 12 - on the left. helix. -In between these. Groups placed level 13, the center of which is located on the axis of the drum 1.

The device works as follows.

The wire is passed through the guides 2 and 3 of the drum 1, inside which the material of the working medium is filled, filling the cavity of the drum by 65 - 90% of its volume. The drum 1 rotates at a speed of 15-60 rev / min around its axis from a drive (not shown) through the tongue 9. Moving the wire relative to the working medium cleans the surface of the wire by wiping it with particles of the medium. When the drum is rotated in a stepwise manner, the material of the working medium is percolating. The interleaving of the working medium material is mainly carried out by varying the level of the centers of the steps.

when the drum rotates, which causes a part of material to be poured from one step to another in the process of changing their relative position. This causes movement of the particles of the working medium material both in the radial and axial directions, i.e. their intensive mixing. This eliminates the possibility of forming a tunnel around the moving wire or filling the area around the wire with particles removed from the wire surface to be cleaned. With intense

By mixing the working medium, dispersion of particles removed from the wire over the entire volume of the working medium, including their transfer to the periphery of the drum, occurs. Wire cleaning

0 is due to the pressure of the working mass on the wire, the magnitude of which is determined by the level of the material of the working medium over the wire passing along the axis of the drum. This level, as the drum rotates at each stage, oscillates due to the displacement of the center of the stages of the drum. Therefore, to ensure high-quality cleaning of the entire length of the wire offset

The 0 drum stages must be at least three, since it is only under this condition that the required level of material of the work package is provided at least in one drum stage at any moment.

The material level of the working medium in the drum steps varies, as the steps, the drum change their mutual position in the vertical plane of the bone. At the same time, the particles of the working medium are poured into the adjacent stage and back, and if the centers of the drum stages are located on the helix, the number of pouring particles from one stage to another and back at the same level of material of the medium is not. will be the same and depends on the ratio of the direction of the helix on which the

g are the centers of the steps of the drum and the direction of rotation of the drum. Equality of the number of particles that are interspersed in this case occurs when a difference in the levels of the working medium in the

g adjacent drum steps. Thus, when placing the centers of the drum steps on the helix, a difference is created in the material levels of the working medium in the steps, increasing

five

in one direction, depending on the ratio of the direction of the screw and the direction of rotation of the drum-. The resulting material level transfer i can be used to reduce the pressure of the material, for example, from the exit guide 7 by. pull it up from the side of the inlet guide 6. This will make it easier for the output guide to work. If the drum is performed with two groups of stages and the centers of the stages in the groups are shifted on the screw with the opposite direction, then the maximum level of the working medium material where step 13 is located. This will relieve both drum guides.

The length of the drum cavity is selected depending on the speed of the wire being cleaned, the quality of its surface, the required degree of its cleaning. The length of each step is determined by the number of steps in the drum. As the number of stages increases, the intensity of mixing of the working medium and the uniformity of wire cleaning increase. However, the length of each step should not be less than the value that ensures the smooth flow of the working medium material in the cavity. And this in turn depends on the flowability of the material, i.e. on the particle size, their specific gravity, the coefficient of friction among themselves, the magnitude of the displacement of the centers of the steps relative to the axis of the drum. Based on the experience, it was determined that the step length should not be less than 0.5 - 0.3 of the magnitude of the shift of the center of the step.

The magnitude of the displacement of the centers of the step; it also depends on the flowability of the material: the higher the flowability, the smaller the displacement of the drum stages can be to achieve the same effect of moving the material. The optimum amount of displacement of the steps is within 25–60% of the radius of the generatrix of the internal cavity.

drum steps. To obtain a better mixing effect. but greater displacement of the steps of the baraba-. on. However, an unreasonably large displacement of the steps leads to an unjustified loss of the overall level of the working medium in the drum cavity, which will reduce its pressure on the treated surface and will require an increase in the radius of the drum's core or its length.

The pitch and angle of inclination of the helix at which the centers of the steps are located are determined by the chosen

drum length, the length of the steps and the magnitude of the displacement of the steps. The pitch of the helix is advisable to assign within 1 - 1/3 of the length of the cavity of the drum, which satisfies the requirement

creating the necessary level transfer. its mass in the cavity of the drum.

The invention allows to improve the quality of wire cleaning. Descaling reaches 86%, from rust 93% of the surface of the wire.

Claims (3)

1. A device for cleaning wire containing rotation of a horizontal drum filled with a working medium, input and output guides for the wire, the axes of which coincide with the axis of rotation of the drum, characterized in that, in order to improve the quality of wire cleaning, the drum is made stepwise with a number of steps of at least three; The centers are offset from the axis of rotation of the drum and are evenly placed around its axis. 2. A device according to Claim 1, characterized in that the centers of the steps offset from the axis of rotation of the drum are arranged along a helical line. 3. The device according to PP, 1 and 2, which is based on the fact that the drum is made of two groups of stages whose centers are arranged along helical lines with opposite directions. by niem. FIG. 2 eleven Compiled by R. Gavryushin Editor S. Patrusheva Tehred M. Khodanych Proofreader D. Obruchar Order 5655/12 Circulation 731 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production polygraph (} mech enterprise, Uzhgorod, Proektna st., 4 / 12 11P fPus. 3