Abrégé

A paper stock modification device is provided wherein accretions do not build up on the blades even when modifying paper feedstock comprising large amounts of hot melt, adhesive material, etc. and there is no risk of damage to the cylinder. Since a circular member is provided in a space at the other end, the paper feedstock accumulates in front of the end face of the circular member and is in a softened state with moisture removal being incomplete. Metal scraper parts protrude therein and the metal scraper parts are in close proximity to blades. Thus, even if paper feedstock comprising large amounts of hot melt, adhesive material, etc. adheres to the blades, the same is completely scraped off as a result of a scraping action of the plate surfaces of the metal scraper parts that is caused by the rotation of the blades.

Classes IPC  ?

• B01F 27/70 - Mélangeurs à agitateurs tournant dans des récipients fixesPétrins avec des agitateurs tournant autour d'un axe horizontal ou incliné avec des palettes, des lames ou des bras
• B01F 35/12 - Entretien des mélangeurs utilisant des moyens mécaniques
• B01F 101/47 - Mélange d'ingrédients pour faire de la pâte à papier, p. ex. fibres de bois ou pâte à bois
• D21B 1/32 - Triturage par d'autres moyens de vieux papiers
• D21B 1/34 - Pétrissage ou mélangePulpeurs

Abrégé

In vertical concentrating washing machines, processed raw material is transported upward but ends up containing shower water. That is, the moisture content ends up increasing during the transport process even though the material has been dewatered. A transport blade (8) has a plate-like shape in plan view and includes a fan-shaped portion (10) that extends rearward in the rotational direction, developing into a fan shape, and the transport blade is attached such that a plate surface thereof has a slanted orientation with respect to the axis direction of a rotary shaft (6), with a forward side, in the rotational direction, of the plate surface being disposed lower than a rearward side thereof. A plurality of the transport blades (8) is attached so as to delineate a helix along the circumferential direction of the rotary shaft (6) while leaving a communicating portion that is straight in the vertical direction. Shower water falls from gaps (S) between the transport blade (8). The transport blades (8) have a fan shape that widens toward the inner wall side of the rotary drum (5). A surface area on which the material rests stably and a sufficient gap (S) are secured in a well-balanced fashion.

Classes IPC  ?

• D21C 5/02 - Préparation à partir de vieux papiers
• D21B 1/32 - Triturage par d'autres moyens de vieux papiers
• D21B 1/34 - Pétrissage ou mélangePulpeurs

Abrégé

Provided is a paper stock modification device wherein accretions do not build up on the blades even when modifying paper feedstock comprising large amounts of hot melt, adhesive material, etc. and there is no risk of damage to the cylinder.　Since a circular member 37 is provided in a space 39 at the other end, the paper feedstock accumulates in front of the end face 37d of the circular member 37 and is in a softened state with moisture removal being incomplete. Metal scraper parts 43, 43 protrude therein and the metal scraper parts 43 and 43 are in close proximity to blades 21a, 21a, …. Thus, even if paper feedstock comprising large amounts of hot melt, adhesive material, etc. adheres to blades 21a, 21a, … the same is completely scraped off as a result of a scraping action of the plate surfaces 43a, 43a of the metal scraper parts 43 that is caused by the rotation of the blades 21a, 21a, ….

Classes IPC  ?

• D21B 1/32 - Triturage par d'autres moyens de vieux papiers
• D21B 1/14 - Désintégration par meules ou disques
• D21B 1/34 - Pétrissage ou mélangePulpeurs

Abrégé

Waste paper contains sticky foreign material, and the recovery and sending of this sticky foreign material to a paper-making process together with fiber is liable to lead not only to the sticky foreign material sticking to and contaminating the paper making machine or dryer but also paper peeling and tearing, causing a decline in paper quality. This method for recovering fiber form a screening reject is characterized by comprising the steps of: sending a screening reject coming out from a coarse sorting process to a fine sorting pre-processing process such that the screening reject is impacted against rotating blades 8 or stationary blades 11 in the interior of a cylinder body 2 and detachment of the fibers from the sticky foreign material by the sticky foreign material being kneaded and granulation and balling-up of the detached sticky foreign material are promoted, taking advantage of the sticky foreign material becoming extendable and shrinkable due to softening in an environment in which heat is generated from friction between fibers; and then sending the result to the fine sorting process so that the fiber is recovered with the balled-up sticky foreign material being separated as a screening reject via the fine sorting process.

Classes IPC  ?

• D21B 1/32 - Triturage par d'autres moyens de vieux papiers
• D21C 5/02 - Préparation à partir de vieux papiers
• D21D 5/02 - Épuration de la pâte

Abrégé

In vertical concentrating washing machines, processed raw material is transported upward but ends up containing shower water. That is, the moisture content ends up increasing during the transport process even though the material has been dewatered.　A transport blade (8) has a plate-like shape in plan view and includes a fan-shaped portion (10) that extends rearward in the rotational direction, developing into a fan shape, and the transport blade is attached such that a plate surface thereof has a slanted orientation with respect to the axial direction of a rotary shaft (6), with a forward side, in the rotational direction, of the plate surface being disposed lower than a rearward side thereof. A plurality of the transport blades (8) are attached so as to delineate a helix along the circumferential direction of the rotary shaft (6) while leaving a communicating portion that is straight in the vertical direction. Shower water falls from gaps (S) between the transport blades (8). The transport blades (8) have a fan shape that widens toward the inner wall side of a rotary drum (5). A surface area on which the material rests stably and a sufficient gap (S) are secured in a well-balanced fashion.

Classes IPC  ?

• D21C 9/02 - Lavage
• D21C 5/02 - Préparation à partir de vieux papiers

Abrégé

Waste paper contains sticky foreign material, and the recovery and sending of this sticky foreign material to a paper-making process together with fiber is liable to lead not only to the sticky foreign material sticking to and contaminating the paper making machine or dryer but also paper peeling and tearing, causing a decline in paper quality.　This method for recovering fiber from a screening reject is characterized by comprising the steps of: sending a screening reject coming out from a coarse sorting process to a fine sorting pre-processing process such that the screening reject is impacted against rotating blades 8 or stationary blades 11 in the interior of a cylinder body 2 and detachment of the fibers from the sticky foreign material by the sticky foreign material being kneaded and granulation and balling-up of the detached sticky foreign material are promoted, taking advantage of the sticky foreign material becoming extendable and shrinkable due to softening in an environment in which heat is generated from friction between fibers; and then sending the result to the fine sorting process so that the fiber is recovered with the balled-up sticky foreign material being separated as a screening reject via the fine sorting process.

Classes IPC  ?

• D21B 1/32 - Triturage par d'autres moyens de vieux papiers
• D21D 5/00 - Purification de la suspension de pâte par des moyens mécaniquesAppareils à cet effet

Abrégé

As residual fibers occurring in the purification of palm oil from palm/coconut are long and strong, the phenomenon that fibers are formed into blocks and cause clogging at the discharge to the subsequent step is likely to be experienced. There has been the problem that even when the torque of spiral rotary blade assembly is increased to resolve any twining of fibers around the spiral rotary blade assembly, the rotation is stopped to thereby necessitate removing of reclaimed material having twined around the spiral rotary blade assembly and re-operation thereof. The paper stock preparing apparatus using palm/coconut as raw material is adapted to carry out cutting of residual fibers occurring in the purification of palm oil from palm/coconut to a length of 2.5 to 3.0 cm by means of a cutter, adding of a small amount of water to the cut residual fibers followed by incorporation in a crude crusher to thereby effect crude crushing, impregnating of the crudely crushed residual fibers as a raw material with an alkali agent while adding an appropriate amount of alkali agent and high-concentration mixing by a high-concentration cooking equipment with kneading edge and spiral rotary blade assembly capable of continuous high-concentration cooking to thereby attain agitation, washing, compression, dewatering, heat generation, crushing and pressure feeding.

Classes IPC  ?

• D21C 7/02 - Lessiveurs rotatifs
• D21H 11/08 - Pâte mécanique ou thermomécanique