SU1577879A1 - Separating device for cleaning thin elongated articles - Google Patents

Abstract

The invention relates to the separation of materials on screening surfaces of vibrating screens used in the mining, medical, instrument-making, bearing and other industries. The goal is to increase the cleaning efficiency of fine long products (DMI) by preventing them from being carried away with a tailing fraction. The device contains parallel one to the other top 1 and bottom 2 decks installed at a distance from one another. On decks 1 and 2 there are holes 4 and 5 arranged in longitudinal parallel rows with equal pitch T rows and offset by half pitch T rows of holes 5 relative to rows of holes 4. At the same time, holes 5 are made in the form of a slit. The offset of the L series of holes 4 and 5 is made of the condition L≥DH / H + D / 2 + S / 2, where D is the diameter of the holes 4

S is the width of the holes 5 in the direction of their displacement

H is the distance between decks 1 and 2

H is the thickness of deck 1. Processed by the DMI during and after the end of the vibration treatment process can be placed at different angles in the holes 4 of deck 1, creating a hedgehog. However, their falling into the holes 5 of deck 2 is eliminated due to the specified offset L between the rows of holes 4 and the rows of holes 5. The step T of the arrangement of rows of holes 4 and 5 in decks 1 and 2 is determined by the dependence T = 2L, and the lower length limit L processed by DMI - dependence L≤ (3-5) T. 2 Il.

Description

The invention relates to devices for separating materials, in particular, to screening surfaces of vibrating screens, and can be used to separate processing products from thin, long articles, mainly cylindrical in shape, and can be used in the manufacture of accessories in the medical, instrument-making, bearing industry and in other areas of the national household,

The purpose of the invention is to increase the cleaning efficiency by preventing the entrainment of long articles with a similar fraction.

Fig. 1 shows schematically the proposed separation device, top view; Fig, 2 - section aa in Fig.1 „

The separation device contains upper deck 1 and lower deck 2, arranged parallel to each other and connected by screws 3 (Fig. 01). Top deck 1 has a row of holes 4 with diameter d, which is chosen, as well as the distance between decks H, the outcome from the requirement of effective entrainment of particles, and this value should significantly exceed the diameter of the processed products. Each row of holes in the bottom deck is made in the form of a slit 5, Rays of slits 5 of width s in the direction of displacement are parallel to the rows of holes 4 of the top deck 1. The width s is equal to or less than the diameter of holes 4 in the top deck 1, which provides overall useful the area of sifting the bottom deck 2 is equal to or greater than the usable area of the screening of the top deck 1 "The pitch of the rows of holes on the top and bottom decks are the same

In this case, the rows of slots 5 in the bottom deck 2 are offset from the rows of holes in the upper deck 1 by an equal distance to both sides of the plane passing perpendicular to the surfaces of the decks 1 and 2 through the centers of the holes 4 of each row of the upper deck 1 "t0e. In addition, the offset of the series of holes in the upper and lower decks is performed

 dHd s

1 h 22

where b is the thickness of the upper deck

At the limiting angle of inclination of the workpiece to the plane of the upper deck 1, the distance between the axes of the holes 4 in the upper deck 1 and the axes of the slots 5 in the lower deck 2, i.e. the amount of displacement is from the condition of excluding the collapse of workpieces in the slot 5 of the bottom deck 2, taking into account the correction factor for possible bending of the product in the process of vibro-processing, taken equal to 1.1.

1 1.1

dHd 4- s

h 2 G

The separation device works as follows0

The material enters the top deck 1 and under the action of the driving force of the vibrodrive, thin, long products are cleaned from processing products. As the vibratory movement of products, the abrasive particles are carried away by the liquid through the holes 4 and then through the slots 50. The processed products during and after the end of the vibro-processing process can be placed at different angles in the holes 4 of the upper deck 19 creating however their collapse deck 2 is eliminated due to the specified offset 1 between the rows of holes 4 and the rows of slots 50

To avoid cases of machined products falling through the end part into the holes 4 of the upper deck 1 through the slots 5 of the lower deck 2 located on both sides of the holes 4 in the upper deck 1, by maintaining a constant value of the angle of displacement of the rows of holes 4 and rows of grooves 5 relative to each other at a distance of 1, given by the above equation, the hague (t) of the arrangement of rows of holes 4 in the upper deck 1 and, accordingly, the pitch of the rows of rows of slots 5 in the lower deck 2 is determined by the dependency

t,

From the graphical construction shown in Fig. 2, it can be seen that the lower limit of the length (L) of the products being processed is calculated as the hypotenuse

515

the right angle of inclination of the products to the plane of the top deck 1, which prevents the vehicle from falling down, taking into account the correction factor for possible bending of the product in the process of vibration processing, taken equal to 1.1 and is determined by the dependence

L b 1.1 (H + h) VH - (- J) S h

and, as established experimentally, should be within

 t.

Claims (1)

After the process of vibro-processing and cleaning of parts is completed, the new batch is unloaded and loaded. Invention Formula A separating device for cleaning thin, long products, including parallel upper and lower decks to one another, spaced from one another and 79 Filled with holes arranged in longitudinal parallel rows with the same pitch of rows of holes on the upper and lower decks and offset by half of the pitch of the rows of holes in the lower deck relative to the ips of the holes in the upper deck, with In order to increase the cleaning efficiency by preventing the entrainment of long items with a tailing fraction, the amount of displacement of the rows of holes in the upper and lower deck is made 15 T, and. . BUT where d is the hole diameter of the upper deck; bottom deck opening width in the direction of its displacement; distance between decks; the thickness of the upper deck, while the holes of each row of the lower deck are made in the form of a slit0 H - h A-L Turned