公开(公告)号：WO2020022941A1

公开(公告)日：2020-01-30

申请号：PCT/SE2019/050508

申请日：2019-06-03

Applicant: VALMET AB

Inventor： LINDBLOM, Thommy

IPC: D21D1/30 ,  B02C7/12 ,  D21B1/14

Abstract: There is disclosed a refiner segment (10) adapted to be attached to a refiner disc (30) in a refiner (100) of lignocellulosic material, said refiner segment (10) being provided with a plurality of spaced apart bars (20,) extending in a direction from an inner periphery (10a) of said refiner segment (10) towards an outer periphery (10b) of said refiner segment (10), where each pair of adjacent bars (20κ; 20K+I) bounds a corresponding intermediate area (22) on said refiner segment (10). The refiner segment (10) comprises at least one intermediate area (22) that comprises a channel region (23) and a ridge region (24), said channel region (23) connecting at a first side (23b) to said ridge region (24) and extending deeper into said refiner segment (10) than said ridge region (24) in order to create an intermediate area (22) having a cross- section with a varying depth profile. Also disclosed are a refiner disc comprising such refiner segments and a refiner comprising a refiner disc comprising said refiner segments.

公开(公告)号：WO2019199215A1

公开(公告)日：2019-10-17

申请号：PCT/SE2019/050153

申请日：2019-02-20

Applicant: VALMET AB

Inventor： LINDBLOM, Thommy

IPC: B02C7/12 ,  D21D1/30

Abstract: Disclosed is a refiner segment (1) that is adapted to be attached to a refining disc (30) of a refiner (100) of lignocellulosic material. The refiner segment (1) comprises a number N, N ≥ 2, of bars (10) and a number, M ≥2, of dams (11), said bars (10) and dams (11, 11*) being arranged in a pattern whereby essentially box shaped regions (20) are created in areas defined by neighboring bars (10, 10*) and at least two dams (11, 11*) extending between said neighboring bars (10, 10*) at different locations along the length direction of the bars (10, 10*), wherein at least one of the bars (10, 0*) that defines such an essentially box shaped region (20) comprises a bar weakening section (12), arranged within said essentially box shaped region (20), and provided to enable steam trapped in said essentially box shaped region (20) to escape said essentially box shaped region (20) via said bar weakening section (12).Disclosed is also a refiner disc provided with such a refiner segment and a refiner comprising such a refiner segment.

公开(公告)号：WO2018236269A1

公开(公告)日：2018-12-27

申请号：PCT/SE2018/050636

申请日：2018-06-18

Applicant: VALMET AB

Inventor： LINDBLOM, Thommy

IPC: D21D1/30 ,  B02C7/12 ,  D21B1/14

Abstract: A first refining disc (5) for a defibrator (1) for refining fibrous material, adapted to receive a flow of incoming fibrous material (7) from a feed screw (3a)through a material inlet opening (4) arranged in the first refining disc (5), is provided with at least one steam evacuating channel (21) comprising at least one steam inlet opening (22) arranged on a side of the first refining disc (5) adapted to face a second refining disc (6), and at least one steam outlet opening (23) arranged on a side of the first refining disc (5) adapted to face away from the second refining disc (6). The at least one steam outlet opening (23) is arranged centrally of the at least one steam inlet opening (22) with respect to the center of the first refining disc (5), and centrallyof a position where the flow of incoming material (7) is to be received into the first refining disc (5) from the feed screw (3a), with respect to the center of the first refining disc (5).

公开(公告)号：WO2019108113A8

公开(公告)日：2019-06-06

申请号：PCT/SE2018/051203

申请日：2018-11-20

Applicant: VALMET AB

Inventor： LINDBLOM, Thommy

IPC: B02C7/12 ,  D21B1/14 ,  D21D1/30

Abstract: Disclosed is a refiner plate (1) that is adapted to be attached to a rotatable refiner disc (10) on a refiner (100) for mechanical treatment of lignocellulosic material. The refiner plate (1) comprises a refining surface (11) that is adapted to be arranged oppositely a second refining surface (21) of a second refiner disc (20) on said refiner (100). The refining surface (11) is provided with a plurality of refining bars (110), where at least one of the refining bars (110) is provided with cavities (111) that are at least partially embedded in the refining bars. Moreover, at least one cavity (111) provided on the at least one refining bar (110) have one end (111a) arranged closer to the leading edge (112) of a refining bar (110) and one end (111 b) arranged closer to the trailing edge (113) of the refining bar and wherein the depth dimension of the cavity at the end (111a) is smaller than the depth dimension of the cavity at the end (111b).

公开(公告)号：WO2019108113A1

公开(公告)日：2019-06-06

申请号：PCT/SE2018/051203

申请日：2018-11-20

Applicant: VALMET AB

Inventor： LINDBLOM, Thommy

IPC: B02C7/12 ,  D21B1/14 ,  D21D1/30

Abstract: Disclosed is a refiner plate (1) that is adapted to be attached to a rotatable refiner disc (10) on a refiner (100) for mechanical treatment of lignocellulosic material. The refiner plate (1) comprises a refining surface (11) that is adapted to be arranged oppositely a second refining surface (21) of a second refiner disc (20) on said refiner (100). The refining surface (11) is provided with a plurality of refining bars (110), where at least one of the refining bars (110) is provided with cavities (111) that are at least partially embedded in the refining bars. Moreover, at least one cavity (111) provided on the at least one refining bar (110) have one end (111a) arranged closer to the leading edge (112) of a refining bar (110) and one end (111 b) arranged closer to the trailing edge (113) of the refining bar and wherein the depth dimension of the cavity at the end (111a) is smaller than the depth dimension of the cavity at the end (111b).

公开(公告)号：WO2022235182A1

公开(公告)日：2022-11-10

申请号：PCT/SE2022/050337

申请日：2022-04-05

Applicant: VALMET AB

Inventor： LINDBLOM, Thommy

IPC: D21D1/30

Abstract: A refiner disc of a refiner (100) for refining of lignocellulosic material, said refiner disc (30) having an active surface (1; 1') comprising a pattern of bars (10) and grooves (20) disposed in a number of pattern areas (41; 41'), wherein said pattern areas (41; 41') are positioned side by side with each other to cover at least a part of the active surface (1; 1'). Each of said pattern areas (41; 41') has a length, l, extending between a first end (43a) and a second end (43b) of the pattern area (41; 41') and a width, w, extending between two side edges (45a, 45b) of the pattern area, wherein a distance between the two side edges (45a, 45b) is smallest in the first end (43a) of the pattern area (41; 41') and is increasing towards the second end (43b) of the pattern area. Each of said pattern areas (41; 41') is positioned on the active surface (1; 1') such that a centre line, c, of the pattern area (41; 41') is provided at an angle, p, to a radius, R, of the refiner disc (30), said angle, p, being between 10-60°.

公开(公告)号：WO2021225491A1

公开(公告)日：2021-11-11

申请号：PCT/SE2021/050276

申请日：2021-03-29

Applicant: VALMET AB

Inventor： LINDBLOM, Thommy ,  AHLGREN, Örjan ,  LAREDIUS, Jan

IPC: D21B1/14

Abstract: A defibrator system comprising: a preheater (3), a defibrator (7), a feed screw arrangement (11) and a return steam pipe (23) configured for transferring steam from the feed screw arrangement to the preheater, wherein the return steam pipe comprises a sensor arrangement (31a) which can measure a feature that can be used for evaluating if there is a stop or reduced possibility for the steam to pass through the return steam pipe. A return steam pipe arrangement and a method for defibrating wood chips are also disclosed.

公开(公告)号：WO2021225498A1

公开(公告)日：2021-11-11

申请号：PCT/SE2021/050402

申请日：2021-04-30

Applicant: VALMET AB

Inventor： LINDBLOM, Thommy ,  AHLGREN, Örjan ,  LAREDIUS, Jan

IPC: D21B1/14

Abstract: The present invention relates to a defibrator assembly (10) comprising - a preheater (11) for treating lignocellulosic material before defibration, - a defibrator (12) for receiving lignocellulosic material from the preheater (11) and defibrating the lignocellulosic material, the defibrator (12) comprising a feed screw arrangement (31) for receiving lignocellulosic material from the preheater (11) and feeding it towards a refiner housing (13), a refiner housing (13) comprising at least one blade pair (41) for refining the lignocellulosic material, an outlet (14) for discharging refined lignocellulosic material from the refiner housing (13), wherein the defibrator assembly (10) further comprises a first sensor (51) for detecting at least one parameter of the defibrator (12), said first sensor (51) being configured to detect the at least one parameter in a feed screw environment (6) formed inside the defibrator (12). The invention also relates to a method for monitoring a defibrator assembly.

公开(公告)号：WO2021225490A1

公开(公告)日：2021-11-11

申请号：PCT/SE2021/050271

申请日：2021-03-26

Applicant: VALMET AB

Inventor： LINDBLOM, Thommy

IPC: D21B1/14

Abstract: The invention relates to a method and an apparatus for defibrating wood chips comprising a preheater (130) and a defibrator (150), said preheater comprising a wood chips inlet and a wood chips outlet, the defibrator comprising a wood chips inlet and a wood fiber outlet, the wood chips outlet of the preheater is connected to said wood chips inlet of said defibrator via a feeder pipe (139) comprising at least one wood chips feeding arrangement (152) for feeding wood chips to said defibrator, a return steam pipe (110) is arranged between said feeder pipe and said preheater, characterized in that said return steam pipe (110) is provided with a cleaning pipe (120) for providing a gas into said return steam pipe.

公开(公告)号：WO2017061937A1

公开(公告)日：2017-04-13

申请号：PCT/SE2016/050953

申请日：2016-10-05

Applicant: VALMET AB

Inventor： LINDBLOM, Thommy

IPC: D21D1/30 ,  B02C7/12 ,  D21B1/14

CPC classification number: B02C7/12 ,  B02C7/06 ,  D21D1/30

Abstract: A center plate (10) for a rotor (6) in a pulp or fiber refiner (1) has a surface (200) provided with at least one feeding wing (100) for directing lignocellulose- containing material (7) flowing onto the surface (200) towards a periphery of the center plate(10). The at least one feeding wing (100) is an elongated protrusion arranged such that a second end (100b) of the feeding wing (100) is arranged further away from a center of the center plate (10) than a first end (100a) of the feeding wing (100) and also displaced relative to the first end (100a) of the feeding wing (100) in a direction opposite to a direction of rotation (11) of the rotor (6) and center plate(10). The center plate (10) is also provided with at least one counter-feeding wing (300) for directing steam(8b)flowing along the surface (200) towards the center of the center plate(10).The at least one counter-feeding wing (300) is an elongated protrusion arranged such that a second end (300b) of the counter-feeding wing (300) is arranged further away from the center of the center plate (10) than a first end (300a) of the counter- feeding wing (300) and closer to the center of the center plate (10) than the first end (100a) of the at least one feeding wing(100), and also displaced relative to the first end (300a) of the counter-feeding wing (300) in a same direction as the direction of rotation(11) of the rotor (6) and center plate (10).

Abstract translation: 用于纸浆或纤维精制机（1）中的转子（6）的中心板（10）具有设置有至少一个进料翼（100）的表面（200），用于引导流过表面的含木素纤维素的材料（7） （200）朝向中心板（10）的周边。 所述至少一个进给翼（100）是细长突起，其被布置成使得所述进给翼（100）的第二端（100b）比所述第一端（100a）更远离所述中心板（10）的中心布置， （100）的转动方向（11）和中心板（10）的方向相对于进给翼（100）的第一端部（100a）移动。 中心板（10）还设置有至少一个反向馈送翼（300），用于引导沿着表面（200）流动的蒸汽（8b）朝向中心板（10）的中心。 馈送翼（300）是细长的突起，其布置成使得相对馈送翼（300）的第二端（300b）布置成远离中心板（10）的中心比第一端（300a）远离中心板 相对馈送翼（300）并且比所述至少一个馈送翼（100）的第一端（100a）更靠近中心板（10）的中心，并且相对于所述至少一个馈送翼（100）的第一端（300a） 反向馈送翼（300）沿与转子（6）和中心板（10）的旋转方向（11）相同的方向。