SEALING GATE TO CONVEYOR FURNACE FOR CONTINUOUS HEAT TREATMENT OF CHEMICAL FIBRE IN MANUFACTURE OF CARBON FIBROUS MATERIAL Russian patent published in 2017 - IPC D01F9/12 F27B9/30 F27D1/18 

FIELD: machine engineering.

SUBSTANCE: gate has a body 1 with a flange 2 for attachment to a furnace working chamber 3 and a longitudinal rectangular through channel 4. The through channel 4 is made open at a first end which is associated with input or output port 5 of the working chamber 3. At a second end opposite to the first one there are seals 6 providing sealing when contacting the processed fibre 11 moving along the channel 4. The gate also gas supply means in the form of manifolds 25. The second end of the through channel 4 is provided with a pair of walls 7 rigidly interconnected and inclined to the axis of the channel of walls 7 which are engageable with the seals 6 for their interaction (movement relative to each other). The seals 6 are pressed against the inclined walls 7 by means of adjustable clamps 18. For moving the seals 6 along the inclined walls 7 during opening-closing of the gate, a movement mechanism is used that is made in the form of two pairs of upper 12 and lower 13 movable parallelograms connected to each other by central balancing links 14, and a pair of eccentric drives 16 locked by an axle 15 and installed in the upper channel wall 4. Each seal 6 is made of a pack of compressed heat-resistant tissues and having an inclined surface 9 conjugated with the inclined wall 7, and a horizontal working surface 10 formed by the ends of cloth threads similar to a brush. The horizontal surface 10 is in contact with the processed fiber 11. The eccentric drives 16 are connected to links of the lower pair of parallelograms 13. On horizontal links of parallelograms 12, 13 there are seals 6 secured by means of swinging shackles 17, and adjustable clamps 18 of the seals 6 are mounted on the inclined walls 7.

EFFECT: increased heat treatment efficiency of the fibrous material by improving the gate sealing quality.

3 cl, 2 dwg