| 摘要 |
<p>The invention concerns a method and a device in the regulation of the headbox. The headbox comprises a pulp (M) inlet header (10), after the pulp inlet header (10), seen in the pulp (M) flow direction, a distributor manifold (11), whose pipes (11a1.1,11a1.2...) are opened into an intermediate chamber (12). The headbox comprises an attenuation chamber (17) placed in connection with the intermediate chamber (12) and, after the intermediate chamber (12), a turbulence generator (13), whose tubes (13a1.1,13a1.2..., 13a2.1,13a2.2...) are opened, at their outlet end, into the discharge duct (14) and, at their inlet end, into the intermediate chamber (12). In the method, into different positions along the width of the headbox, a pulp suspension (M) flow (Q4.1,Q4.2...Q4.n) is introduced, the concentration of said flow being adjustable by means of combining of two component flows (Q1, Q2). In the method, in the regulation of the concentration of the flow (Q4.1,Q4.2...Q4.n) passed into the pulp suspension (M), two component flows are combined by into the pulp suspension flow (Q3.1, Q3.2...Q3.n) introducing an additional flow (Q1.1, Q1.2...Q1.n). In the solution, the mixing ratio of the combined flow is regulated by adjusting said additional flow (Q1.1,Q1.2...Q1.n). In the method, the additional flow (Q1.1,Q1.2,Q1.3...Q1.n) is passed into the pulp (M) flow taken out of the inlet header. <IMAGE> <IMAGE> <IMAGE></p> |
