| 摘要 |
PURPOSE: Provided is an arrangement in a pulp grinder comprising a grindstone, a feed chute extending to the grindstone, and a piston to feed the wood to be ground in the feed chute against the grindstone, the wood being fed into a grinding space essentially in the axial direction of the grindstone. CONSTITUTION: Provide is an arrangement in a grinder in which wood can be fed continuously in an essentially unchanged manner against the grindstone, maintaining the grinding conditions essentially unchanged, and feeding the wood into the grinder in batches. The arrangement is characterized in that the arrangement comprises a grindstone (1), a feed chute (2) extending to the grindstone (1), and a piston (5) to feed the wood (3) to be ground in the feed chute (2) against the grindstone (1), the wood being fed into a grinding space essentially in the axial direction of the grindstone, characterized in that the arrangement comprises pushing members (6) on two opposite sides of the feed chute (2), the pushing members being insertable at the end of the piston's (5) travel distance into recesses in the piston (5) crosswise of the feed chute (2) behind the wood (3) to be ground and being able to push the wood to be ground toward the grindstone (1) when the piston (5) is moved to the beginning of its travel distance so as to allow the feed of a new batch of wood (3').
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