Abrasive pad and method for abrading glass, ceramic, and metal materials
US-2015158141-A1 · Jun 11, 2015 · US
Refiner plate segment with pre-dam
US10378149B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10378149-B2 |
| Application number | US-201715588900-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 8, 2017 |
| Priority date | Jun 15, 2016 |
| Publication date | Aug 13, 2019 |
| Grant date | Aug 13, 2019 |
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- Title
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Abstract
Official abstract text for this publication.
The invention relates to a refiner plate segment in a refiner plate for mechanically refining of lignocellulosic material in a refiner, said refiner plate segment comprising at least a first, generally radially extending bar, a second, generally radially extending bar, a groove arranged and defined between said first, generally radially extending bar and said second, generally radially extending bar, and a main dam, which has a height H and is arranged in the groove, wherein a pre-dam is arranged in front of the main dam, said pre-dam has a height h which is less than the height H of the main dam.
First claim
Opening claim text (preview).
The invention claimed is: 1. A refiner plate segment in a refiner plate for mechanically refining of lignocellulosic material in a refiner, said refiner plate segment comprising at least: a first, generally radially extending bar, a second, generally radially extending bar a groove arranged and defined between said first, generally radially extending bar and said second, generally radially extending bar, a main dam, which has a height H and is arranged in the groove, and a pre-dam arranged in front of the main dam, said pre-dam having a height h which is less than the height H of the main dam, the pre-dam being arranged a distance L in front of the main dam, where L is measured from a leading edge of the pre-dam to a leading edge of the main dam and where (H−h)≤L≤3(H−h). 2. The refiner plate segment according to claim 1 , where H/4≤h≤3H/4. 3. The refiner plate segment according to claim 1 , including a base plate, the pre-dam and the main dam being arranged on the base plate, which has a thickness b, where 0<b<h. 4. The refiner plate segment according to claim 1 , wherein the pre-dam has a straight or chamfered profile and that the main dam has a straight or chamfered profile. 5. A refiner plate for mechanically refining of lignocellulosic material in a refiner, said refiner plate comprising at least: a first, generally radially extending bar, a second, generally radially extending bar a groove arranged and defined between said first, generally radially extending bar and said second, generally radially extending bar, a main dam, which has a height H and is arranged in the groove and a pre-dam arranged in front of the main dam, said pre-dam having a height h which is less than the height H of the main dam, and the pre-dam is arranged a distance L in front of the main dam where L is measured from a leading edge of the pre-dam to a leading edge of the main dam and where (H−h)≤L≤3(H−h). 6. The refiner plate according to claim 5 , wherein H/4≤h≤3H/4. 7. The refiner plate according to claim 5 , including a base plate, the pre-dam and the main dam being arranged on the base plate, which has a thickness b, where 0<b<h. 8. The refiner plate according to claim 5 , where in the pre-dam has a straight or chamfered profile and the main dam has a straight or chamfered profile.
Assignees
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Classifications
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with coaxial discs · CPC title
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Use of compounds accelerating the pulping processes · CPC title
Double disc mills · CPC title
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Frequently asked questions
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- What does patent US10378149B2 cover?
- The invention relates to a refiner plate segment in a refiner plate for mechanically refining of lignocellulosic material in a refiner, said refiner plate segment comprising at least a first, generally radially extending bar, a second, generally radially extending bar, a groove arranged and defined between said first, generally radially extending bar and said second, generally radially extendin…
- Who is the assignee on this patent?
- Valmet Oy
- What technology area does this patent fall under?
- Primary CPC classification D21D1/306. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Tue Aug 13 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).