SU117820A1 - Device for drying technical fabrics - Google Patents

Description

In known devices for drying technical fabrics consisting of a drying chamber; mounted in the chamber of a chain closed conveyor, a non-drying hung up, and a looper, the adherence of the front side of the technical fabrics suspended in the dryer is observed, due to the fact that in these devices the pitch between the fabric loops, which is constant for the entire device, is insufficient for the loop formation section. This circumstance is reflected in the performance of the device for drying technical fabrics.

In the described device for increasing productivity, the conveyor in the drying chamber is double-stranded, closed in a vertical plane, and attached to chains hung on chains, allowing us to create a variable pitch at the loop formation. An inclined conveyor, 11ush, fingers attached to chain links, interacting with hangers, were used as a looper.

FIG. 1 shows a general view of a device for drying technical fabrics with a cut in the middle of the perpendicular to the direction of movement of the double chain conveyor; in fig. 2-fixing unit hung to the conveyor chain; pas figs. 3 - loop formation scheme.

In the drying chamber / mounted double-chain conveyor 2, closed in a vertical plane and driven from the electric motor (not shown) using chain transmissions and sprockets 3.

The cheeks of the conveyor chains 2 are attached by rods 4 on chains 5 to hang 6, having a rectangular or round shape in cross-section and covered with a rubber layer on top for secure retention of the fabric 7 loops formed on hangers 6, in order to prevent them from lengthening during the compression period looping.

The distance between the attachment points on the chains of the conveyor 2 rods 4 for chains 5 is equal to a constant step t between the loop No. 117820

hung in the drying chamber / fabric 7. The length of the chains 5 varies depending on the magnitude of the predetermined pitch t of the initial loop formation.

An inclined conveyor 8 is used as a looper in the device, consisting of two infinite lamellar-roller chains and bearing the fingers 9 attached to its individual links, interacting with the hangers 6 during operation with the hangers 6.

The inclined conveyor 5 is mounted between the chains of the conveyor .2 in the same plane with the latter.

The operation of the device in the process of drying technical fabrics occurs in the following way.

The technical fabric 7 with the primer applied onto it comes directly from the priming machine (not shown) through the feed, the rollers 10 to the dryer / (Fig. 3, position /), the roll drum 11, which lowers the fabric 7 by a loop between the chains inclined conveyor 8 looper. The next one hung 6, moved by a double-chain conveyor 2, comes in contact with this loop of fabric 7. At this moment, the variable pitch / i of the loop is maximum, exceeding the constant pitch / loops several times, which completely eliminates damage to the fabric when it is hung from the halls. and sticking together on the front side. In this case, the chain 5 hung 6 protrudes along the conveyor 2 to the left side from the point of its fixation on the rod 4. Simultaneously, the fingers 9 of the inclined conveyor 8 begin to interact in the hanging & and move it upwards to the conveyor 2 (Fig. 3, position // ), due to the fact that the speed of movement of the inclined conveyor 8 exceeds the speed of movement of the double-chain conveyor 2, the chain 5 with the hanging 6 "goes to the right side from the point of fixing it on the rod 4. In this case, the variable loop pitch changes all the time, the loop is compressed TC, and at that moment, when the chain 5 is tensioned (Fig. 3, position ///), the loop reaches a constant pitch t, the impact of the finger 9 on the hanging 6 stops and the loop of the fabric 7 begins to move forward with the main chains of the conveyor . 2

During the formation of this loop at the loop formation site, the roll-up drum 11 begins to pick up (fig. 3, position //) and lower the melade with the chains of the inclined conveyor 8 a new loop, which the next hangs up 6. With this hook, the loop moves upwards along the inclined conveyor 8 in the same way as the previous loop.

The hinges of the fabric 7, gradually being hung in this way on the hanger 6, are advanced by the conveyor 2 to the outlet 12 of the drying chamber 1, after which they are wound on a roller of the rolling out machine (shown in the drawing).

In order to match the speeds of movement of the fabric 7 at all sites, the supply of the fabric to the device for the biscuit and the exit from it is regulated by means of variators (not shown).

Subject invention

A device for drying technical fabrics, consisting of a drying chamber mounted in the chamber of a chain closed conveyor carrying the broadcast, and a looper, characterized in that 4TOj in order to increase productivity, the conveyor is made

two-graded, closed in a vertical plane, hung on chains to the cheeks of the chains, allowing to create a variable schag on the loop formation area, and an inclined conveyor carrying the fingers attached to the chain links was used as a looper; interacting with propheels.

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