SU1754808A1 - Device for removing awn of layer of bast crop stems - Google Patents

Abstract

The essence of the invention: the device consists of a device 1 for clamping a layer of stems, a pneumatic system of a duct 2, to which nozzles for air supply are connected. The nozzles have slotted holes 4, the dimensions of which increase successively to the device 1 for clamping the layer and are displaced in the direction of the movement of the layer. The movable cable conveyors 5 are installed parallel to the device 1 for clamping the layer and mounted on the drive shafts 6. The slotted holes 4 of the nozzles 3 are placed above the gaps between the cable conveyors above the stalk layer of the bast cultures. 1 hp f-ly, 4 ill.

Description

The invention relates to the primary processing of bast crops, mainly flax seed, can be used in mechanical processing to break the connection between fiber and wood stem, remove campfires.s

The purpose of the invention is to increase the efficiency of breaking the stems and removing fires,

Figure 1 shows a top view of the device; figure 2 - section aa in Fig, 1; on fig.Z - section BB in figure 1; figure 4 - node I, the cross section of the cable.

A device for stripping a layer of bast stalks includes a device for clamping a layer of stalks, an air duct 2 to which the pressure nozzles 3 are connected to supply air. The nozzles have slotted holes 4, the dimensions of which increase successively to the fixture 1 and are displaced in the direction of the layer movement, movable cable conveyors 5 installed parallel to the fixture 1 and between themselves, the drive shafts 6 and the guard 7.

The slotted holes 4 of the nozzles 3 are placed above the gaps between the cable conveyors parallel to them above the layer of stem crops 8.

The device works as follows.

The clamping device 1 moves the layer 8 of the stems of bast cultures, previously dried, formed into a layer and flattened, onto movable cable conveyors 5, rotated by drive shafts 6, to the zone of the extreme one from the nozzle clamping device 3, where the ends of the stems are blown with constant air flow at a right angle, pressed against the cable and transported further. When the stems enter the zone of action of the subsequent nozzle, the velocity head in which is greater than the previous one, the stems are bent, the wood reaches a critical angle, is broken and dragged along the first cable conveyor

Next, the stems are transmitted by the clamping device and the cable conveyors to the zone of the third nozzle, where the speed is not high.

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the pores are larger than in the second nozzle, the stems are also bent, the wood is broken open. By exceeding the velocity head in the previous nozzle, the curved stem is pulled along the second cable conveyor, approaching the fixture, and the fire is removed in the fiber part of the stem.

On the cable conveyor, the layer of stalks is pressed by the air flow to the edges of the protrusions of the cable (the protrusions can be made not necessarily round), which ensures pulling the stems on one working organ (cable) along several contact lines at the edges, increasing the number of mechanical impacts as one of the conditions for cleaning fiber from fires; At the same time, these effects are gentle, which keeps long fibers from breaking.

The sequence of operations is repeated. After processing, the end of the stems is clamped by another transport device and the second part of the stem is similarly processed.

For the collection of fires, dust and the removal of exhaust air, pneumatic conveying systems are installed and dust-removing ventilation with funnels and dust receptacles. These devices are known and not shown in the drawing.

In order to prevent the fiber part of the stem from being wound onto the cable conveyors, a barrier 7 is installed, which also acts as a support for the cable and guide to sag.

The protrusions on the cable increase the number of working edges when pulling the stem, which increases the efficiency of separating the fires from the fiber. The same speed of the cable conveyors and the clamping device ensure a constant position of the stem perpendicular to the working bodies, as a condition for the effective breaking of the wood of the stem. The efficiency of the wood break of the stem increases with the combined effects on the wall section between the cables, is produced on a large fire easily removed from normal curing trusts (detachable ™), and on the elements of the cable an additional break is made on the small fire, increasing the number of removable campfires from trusts that are not empty with low separability.

The process of breaking the wood of the stem and removing the fires from the fibrous part due to the pressure difference with their increase from the free ends of the stems to the sandwiched part with displacement along the material movement reduces the fiber layer breaking, improving the quality and increasing the yield of long fiber.

Claims (2)

1. A device for bleaching a layer of stalks of bast cultures, containing a device for clamping a layer and a working body mounted on either side, the ribbed elements of which are located along the direction of movement of the layer, and the injection nozzles connected to the pneumatic system between the ribbed elements with dimensions increasing in the direction of the clamping device and displaced one relative to another in the direction of movement of the layer, characterized in that, in order to increase this ciency fracture stems and remove shives, fin members are in the form of cable conveyors, associated with the actuator. 2. The device on. 1, it is distinguished by the fact that each of the cables in cross section is made with protrusions. S Phie.1 BUT at / sh i l  jo f L-2. FIG. 2 6-6 fig.Z Aa jo fe / hl