RU2309202C1 - Breaking-scutching machine for separation of fiber from treated bast-crop stalks - Google Patents

Abstract

FIELD: textile industry, in particular, technique for separation of fiber from stalks of treated bast-crops, preferably flax.

SUBSTANCE: breaking-scutching machine has horizontal feeding conveyor with motion change-over mechanism, breaking-clamping unit, pair of breaking drums, and pneumatic suction system. Conveyor motion change-over mechanism is connected to device for increasing motion of feeding conveyor during discharge of treated fibers from treatment zone in comparison with its motion during introducing of fiber.

EFFECT: increased yield of long fibers from treated bast-crop fibers.

2 dwg

Description

The invention relates to the textile industry, and in particular to devices for isolating fiber from stalks of bast crops, mainly flax.

A device for separating fibers from trusts of bast crops, containing a node for moving trusts in the form of an endless conveyor and a pair of beat drums [1].

However, this device is not equipped with a fire removal system, which degrades the technological effect of processing.

Also known is a milling-scutching machine for isolating fiber from the stems of bast-crop trusts, containing a horizontal feeding conveyor with a mechanism for switching its movement, a milling-clamping unit, a pair of scraper drums and a pneumatic suction system [2].

The disadvantage of this machine is that moving the conveyor branch forward is equal to its rearward movement. Because of this, the processed strand at the end of the treatment cycle remains clamped in the milling-clamping unit. This is due to the fact that when scuffing, the strand lengthens due to the migration of fibers relative to each other.

Mentioned known milling and bobbing machine in its technical essence is closest to the claimed and therefore is proposed as a prototype.

An object of the invention is to increase the yield of long fiber from trusts of bast crops.

The technical result in a milling-browning machine for separating fiber from the stems of bast trusts containing a horizontal feed conveyor with a mechanism for switching its movement, a milling and clamping unit, a pair of scraper drums and a pneumatic suction system, according to the invention, is achieved by the fact that the mechanism for switching the conveyor movement is connected with a device that provides an increase in the course of the feed conveyor when the trust is withdrawn from the processing zone in comparison with its course when the trust is entered.

This design feature is due to the fact that when processing flax raw by beating, elongation of the strands of battered flax occurs due to the displacement of the fibers from each other from the middle to the ends of the handful, resulting from their interaction with the edges of the beat. In this regard, increasing the length of the return stroke of the conveyor allows you to completely remove from the clamping zone the processed material, which will increase the yield of long fiber.

The invention is illustrated by drawings. Figure 1 shows a diagram of a milling and bobbing machine for separating fiber from a trust of bast crops. Figure 2 shows a horizontal conveyor, the progress of which is forward and backward different.

The grinding and grinding machine consists of a horizontal feed conveyor 1, a device for adjusting the stroke and switching the movement of the conveyor 2, a grinding and clamping unit 3, a pair of grinding wheels 4 and a pneumatic suction system 5.

The operation of the milling and bobbing machine is as follows: the stalks of the linen trust are laid out on the feed conveyor 1. Then, using the device for adjusting the stroke and switching the movement of the conveyor 2, they are turned on to the milling and clamping unit 3. Moreover, when feeding forward, the right ends of the trust pass the distance from point A to point A ^h1 , and the magnitude of the conveyor stroke in this case is equal to h1 (figure 2). After crushing, the raw material clamped in the milling and clamping unit 3 is subjected to beating by a pair of beater drums 4. The beating waste is removed using the pneumatic suction system 5. After processing the butt portion of the handful with the help of the conveyor 2 adjustment device, the handful moves backward and passes the distance from point A ^h1 to points A ^h2 . In this case, the conveyor stroke is equal to h2, and h2> h1. Turning over a handful, the apical part of a handful of stems is similarly processed.

An example of a specific milling and bobbing machine. Handfuls of trusts weighing 100 grams are laid out on the feed conveyor with clumps forward. Then, the Start button turns on the processing cycle. The conveyor is driven by an electric motor, the operating time of which is set by two time relays brand VL66UHL4. Relay No. 1 controls the operating time of the conveyor drive motor forward, and relay No. 2 controls the operating time back. Thus, setting the operating time of each relay allows you to set the conveyor stroke forward (900 mm) and back (1050 mm). As a result, the difference in the magnitude of the conveyor stroke is 150 mm.

Using the proposed device does not require large capital expenditures and can improve the efficiency of processing flax trusts.

Information sources

1. Patent No. 828 (USSR) Sawing and grinding machine // Clubs B.C. - publ. 11/30/1925.

2. A.s. No. 749950 (USSR) A method for assessing the quality of a linen trust // Egorov M.E., Lebedev Y.A. and others - publ. 07/23/80. Bull. Number 27.

Claims (1)

A grinding machine for separating fiber from the stems of bast crop trusts containing a horizontal feed conveyor with a mechanism for switching its movement, a grinding and clamping unit, a pair of grinding wheels and a pneumatic suction system, characterized in that the mechanism for switching the conveyor movement is connected to a device that provides an increase in stroke feeding conveyor when withdrawing trusts from the processing zone in comparison with its progress when entering trusts.

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