Equipment for pretreating recovery of industrial textiles
By designing a pretreatment device for the recycling of industrial textiles, and utilizing components such as drive rollers, cutting blades, and identification tools, efficient cutting and drying of textiles can be achieved without affecting production. This solves the problems of complex recycling processes and long downtime, and reduces carbon dioxide emissions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- VALMET TECH OY
- Filing Date
- 2025-04-17
- Publication Date
- 2026-04-10
AI Technical Summary
In existing technologies, the recycling and processing of industrial textiles is complex and time-consuming, resulting in long downtime and carbon dioxide emissions from incineration.
Design a pretreatment device for recycling industrial textiles, including a movable frame and multiple components such as drive rollers, cutting blades and tensioning devices, capable of cutting and drying textiles without causing unnecessary downtime, and using identification tools to distinguish recyclables.
It simplifies the recycling process for industrial textiles, reduces downtime, lowers carbon dioxide emissions, and improves processing efficiency.
Smart Images
Figure CN224106144U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present utility model relates to an apparatus for pre-treating the recycling of industrial textiles and a method for pre-treating the recycling of industrial textiles. BACKGROUND
[0002] Industrial textiles are widely used in various processing industries, such as the mining industry, pulp and paper industry, and sewage treatment plants. In the pulp and paper industry, multi-purpose industrial textiles are applied to fiber web machines, which include forming fabrics, press fabrics, and drying fabrics. These fabrics include felt and wire. The service life of these fabrics can be relatively short. For example, the service life of press felt can be three weeks to six months, after which it is typically incinerated. When these fabrics are incinerated, a large amount of carbon dioxide emissions are produced.
[0003] These fabrics are incinerated because it is believed that recycling them is complicated. When the used fabrics are removed from the machine in which they are used, they can be wet, dirty, and heavy. Wet fabrics can mold. It is difficult to package these fabrics, and the transportation costs are high. Wet and dirty fabrics can also interfere with the recycling process. Furthermore, the downtime of the paper machine should be controlled to be as short as possible, and therefore, people are reluctant to spend time handling the end-of-life fabrics. SUMMARY
[0004] It is an object of the present utility model to provide an apparatus for pre-treating the recycling of industrial textiles to solve the above-mentioned problems. The object of the present utility model is achieved by the following apparatus.
[0005] The present application provides an apparatus for pre-treating the recycling of industrial textiles, the apparatus having a feed direction and a cross direction, the apparatus comprising a movable frame and a plurality of members mounted on the frame, wherein the plurality of members comprises a nip having a drive roll and at least one cutting blade.
[0006] Further, the apparatus comprises a cutting table.
[0007] Further, in the feed direction of the apparatus, the at least one cutting blade and the cutting table are located before and / or after the nip.
[0008] Further, the apparatus comprises a tensioning device located before the nip in the feed direction of the apparatus.
[0009] Further, the cutting blade is arranged to cut in the feed direction.
[0010] Further, the apparatus comprises more than one cutting blade, which are assembled at predetermined intervals.
[0011] Further, the apparatus comprises a fixed cutting blade.
[0012] Further, the apparatus comprises a rotatable or adjustable cutting blade.
[0013] Further, the cutting blade is arranged to cut spirally.
[0014] Further, the apparatus comprises at least one blade arranged to cut in the cross direction.
[0015] Further, the apparatus comprises an identification tool arranged to identify whether the industrial textile is recyclable.
[0016] Further, the apparatus is used for pre-treatment of recycling of industrial textiles from a fiber web machine.
[0017] The application also provides a method for pre-treatment of recycling of industrial textiles, which is implemented by the above-mentioned apparatus of the application, the method comprising cutting the industrial textile into strips.
[0018] Further, the method comprises drying the strips.
[0019] Further, the method comprises identifying whether the industrial textile is recyclable by means of an identification tool.
[0020] The present application is based on the idea that the industrial textile for recycling is pre-treated on site without causing unnecessary downtime.
[0021] The apparatus and related methods of the present application have the advantage that the pre-treatment of the industrial textile for recycling becomes easier and the downtime is minimized.
[0022] The apparatus is used for pre-treatment of recycling of industrial textiles. On a fiber web machine producing pulp or paper products or similar, the industrial textile is circulated in the form of an endless net or felt. The industrial textile is typically in the shape of a rectangle having a longitudinal direction and a cross direction when the seams of the industrial textile are opened or the felt is cut. After being taken off from the paper machine or board machine, the industrial textile can be wound on a roll or stacked. The industrial textile can be wound on a roll of a conventional winder or on a roll of the apparatus described herein.
[0023] The apparatus has a feed direction and a transverse direction in the horizontal plane perpendicular to the feed direction. The apparatus comprises a preferably movable frame and a plurality of components mounted on the frame. The movable frame can have wheels. The movable frame makes the apparatus easy to move from one place to another.
[0024] The plurality of components comprises a nip with a drive roller and at least one cutting blade. The drive roller has opposing surfaces, such as a back roller or a top roller. The cutting blade cuts in the longitudinal direction of the industrial textile and / or in the transverse direction of the industrial textile, i.e. in the feed direction and / or the transverse direction of the apparatus. The cutting blade that cuts in the longitudinal direction can be a fixed cutting blade or an adjustable or rotatable cutting blade. The rotatable cutting blade can comprise a spring-loaded shaft provided with a rotating blade at one end thereof. For safety reasons, the cutting blade can be provided with a sheath, since the cutting blade must be sharp in order to effectively cut without leaving loose yarns that interfere with the cutting.
[0025] The number of blades that cut in the feed direction can be varied. There must be at least one blade, but there are usually more blades that are spaced at predetermined intervals. The blades can be spaced at regular intervals. The blades cut the industrial textile into strips that are preferably 50 to 1000 mm wide.
[0026] The number of blades that cut in the transverse direction is usually one or two. Two blades are preferred when it is desired to take samples that cover the entire width of the industrial textile. One blade can cut across the entire width of the industrial textile before the nip, and another blade can cut in the transverse direction when the industrial textile has already been cut into longitudinal strips.
[0027] The strips are collected in a plurality of cages that extend over the entire width of the industrial textile. The plurality of cages is preferably made of wire mesh, but in principle they can be any container suitable for collecting strips. Even trays can be used to collect the strips. The cages can have wheels, or they can be transported with a forklift.
[0028] The cages that contain the strips of industrial textile can be transported to the hood of the drying section in order to dry the strips. In this way, idle space that has not been used so far can be utilized. It is beneficial from a drying point of view that the cages are made of wire mesh. After the strips have dried, they can be transported to a recycling process for further processing.
[0029] Another option is to provide the apparatus with a drying cabinet. The industrial textile is dried in the drying cabinet in a suitable manner. As a few examples, hot air can be blown into the drying cabinet after the industrial textile has been folded and before it is fed into the nip, or a roll on which the industrial textile is wound can be heated before the industrial textile is fed into the nip. A conventional winder can also have drying capacity.
[0030] The industrial textile to be cut can be fed into the nip from a take-off roll on which the industrial textile is wound, or from a stack formed or folded from the industrial textile, or directly from a paper or board machine. A tensioning device before the nip tensions the industrial textile.
[0031] A cutting table can be provided after the nip, which provides an opposing surface for the at least one cutting blade, i.e. the at least one cutting blade is supported by the cutting table during cutting. A cutting table before the nip can be used to cut a sample from the industrial textile when a sample covering the entire width of the industrial textile is required. The cutting table can comprise one or more recesses, each recess receiving a cutting blade as a counterpart in order to make the cutting process easier and safer.
[0032] In addition to cutting in the feed direction and / or in the cross direction, the industrial textile can also be cut spirally when the industrial textile is in the form of a loop. During cutting, the frame and the industrial textile should be displaced relative to each other in the cross direction.
[0033] The apparatus can comprise an identification tool, which identifies whether the industrial textile is recyclable. In this way, recyclable and non-recyclable industrial textiles can be distinguished. Non-recyclable industrial textiles can be, for example, textiles containing more than one fibre raw material. The identification tool can be a reader or a machine vision system. The identification tool identifies a marking attached to the industrial textile. The marking can be a radio frequency identification (RFID, electronic tag) chip, a bar code, a two-dimensional code (QR code), a stamp or printed text. BRIEF DESCRIPTION OF DRAWINGS
[0034] The application will be described in more detail by preferred embodiments with reference to the attached drawings, in which
[0035] Figure 1 a side view showing the basic layout of the apparatus for pre-treating the recycling of industrial textiles is shown;
[0036] Figures 2 to 5 a side view showing the apparatus for pre-treating the recycling of industrial textiles is shown;
[0037] Figure 6A top view of an apparatus for pre-treatment of recycling of technical textiles is shown. DETAILED DESCRIPTION
[0038] Figure 1 A side view of the basic layout of an apparatus 1 for pre-treatment of recycling of technical textiles is shown. The apparatus has a feed direction D and a cross direction C perpendicular to the feed direction D in a horizontal plane (as Figure 6 indicated). The apparatus 1 comprises a drive roll 2, a backing roll 3 and at least one cutting blade 4. The at least one cutting blade 4 can be located in the middle of the cross direction of the apparatus 1. The drive roll 2 and the backing roll 3 form a nip N through which the technical textile F to be cut is arranged to travel. The apparatus 1 can comprise an unwind roll 5 from which the technical textile F is unwound. In Figures 1-6 particular, the unwind roll 5 can be replaced by a conventional winder, i.e. the technical textile to be recycled is first wound from a production machine, such as a fiber web machine, by the winder and then unwound by the apparatus 1 for treatment. The apparatus 1 can further comprise at least one web cage 6 for collecting pieces cut from the technical textile F.
[0039] The apparatus can comprise an identification tool 13 which can be used in connection with the apparatus 1 as Figures 1-6 indicated. The technical textile F has an identification which can be identified by the identification tool 13. The identification tool 13 identifies at least whether the technical textile F is recyclable, but depending on the identification used, it can also contain other information.
[0040] Figure 2 A side view of an apparatus 1 for pre-treatment of recycling of technical textiles is shown. The apparatus 1 comprises a movable frame 7 and a plurality of components mounted on the frame 7. The frame 7 can have wheels 8. The plurality of components mounted on the frame 7 comprises a nip N with a drive roll 2 and at least one cutting blade 4a. There is typically more than one cutting blade 4a. The plurality of cutting blades 4a is assembled at predetermined intervals. The plurality of cutting blades 4a can be assembled at regular intervals. Each cutting blade can be a fixed blade. The plurality of components mounted on the frame 7 can further comprise an unwind roll 5, a tensioning device 9 and a cutting table 10. There can also be another cutting table before the nip for taking a full width sample, as compared to Figure 2 indicated. It is also possible to have one cutting table located on the opposite side of the nip.
[0041] An industrial textile F to be cut is fed from a take-off roll 5 into the nip N (feed direction D). The take-off roll 5 can be surrounded by a drying cabinet 12. The take-off roll 5 can be heated. A tensioning device 9 tensions the industrial textile F. A cutting table 10 provides an opposing surface for at least one cutting blade 4a, i.e. the at least one cutting blade 4a is supported by the cutting table 10 during cutting. At least one web cage 6 receives segments of the industrial textile F. The segments of the industrial textile are placed in a folded manner within the web cage 6. The segments are typically strip-like segments. A row of web cages 6 can be included in the cross direction of the apparatus 1, so that segments are collected in more than one web cage 6.
[0042] Figure 3 A side view of an apparatus 1 for pre-treatment of a recycling of an industrial textile is shown. The apparatus 1 comprises a movable frame 7 and a plurality of members mounted on the frame 7. The frame 7 can have wheels 8. The plurality of members mounted on the frame 7 comprises a nip N with a drive roll 2 and at least one cutting blade 4b. Typically more than one cutting blade 4b is provided. The cutting blades 4b are assembled at a predetermined interval. The cutting blades 4b can be assembled at regular intervals. Each cutting blade 4b can be a rotatable or adjustable blade. The plurality of members mounted on the frame 7 can further comprise a take-off roll 5, a tensioning device 9 and a cutting table 10.
[0043] An industrial textile F to be cut is fed from a take-off roll 5 into the nip N (feed direction D). A tensioning device 9 tensions the industrial textile F. A cutting table 10 provides an opposing surface for at least one cutting blade 4b, i.e. the at least one cutting blade 4b is supported by the cutting table 10 during cutting. At least one web cage 6 receives segments of the industrial textile F. The segments of the industrial textile are placed in a folded manner within the web cage 6. The segments are typically strip-like segments. A row of web cages 6 can be included in the cross direction of the apparatus 1, so that segments are collected in more than one web cage 6.
[0044] Figure 4 A side view of an apparatus 1 for pre-treatment of a recycling of an industrial textile is shown. The apparatus 1 comprises a movable frame 7 and a plurality of members mounted on the frame 7. The frame 7 can have wheels 8. The plurality of members mounted on the frame 7 comprises a nip N with a drive roll 2 and at least one cutting blade 4a. Typically more than one cutting blade 4a is provided. The cutting blades 4a are assembled at a predetermined interval. The cutting blades 4a can be assembled at regular intervals. Each cutting blade 4a can be a fixed blade. The plurality of members mounted on the frame 7 can further comprise a tensioning device 9 and a cutting table 10.
[0045] The industrial textile F to be cut is fed from the stack 11 into the nip N (feed direction D). The stack 11 can be surrounded by a drying cabinet 12. Hot air can be blown into the drying cabinet 12. The tensioning device 9 tensions the industrial textile F. The cutting table 10 provides an opposing surface for the at least one cutting blade 4a, i.e. the at least one cutting blade 4a is supported by the cutting table 10 during cutting. The at least one web cage 6 receives segments of the industrial textile F. The segments of the industrial textile are placed in a folded manner into the web cage 6. The segments are usually strip-like segments. A row of web cages 6 can be included in the cross direction of the device 1 so that segments are collected in more than one web cage 6.
[0046] Figure 5 A side view of a device 1 for pre-treatment of the recycling of industrial textiles is shown. The device 1 comprises a movable frame 7 and a plurality of components mounted on the frame 7. The frame 7 can have wheels 8. The plurality of components mounted on the frame 7 comprises a nip N with a drive roller 2 and at least one cutting blade 4b. Usually more than one cutting blade 4b is provided. The cutting blades 4b are assembled at a predetermined interval. The cutting blades 4b can be assembled at regular intervals. Each cutting blade 4b can be a rotatable or adjustable blade. The plurality of components mounted on the frame 7 can further comprise a tensioning device 9 and a cutting table 10.
[0047] The industrial textile F to be cut is fed from the stack 11 into the nip N (feed direction D). The tensioning device 9 tensions the industrial textile F. The cutting table 10 provides an opposing surface for the at least one cutting blade 4b, i.e. the at least one cutting blade 4b is supported by the cutting table 10 during cutting. The at least one web cage 6 receives segments of the industrial textile F. The segments of the industrial textile are placed in a folded manner into the web cage 6. The segments are usually strip-like segments. A row of web cages 6 can be included in the cross direction of the device 1 so that segments are collected in more than one web cage 6.
[0048] Figure 6 A top view of a device 1 for pre-treatment of the recycling of industrial textiles F is shown. The device 1 can be similar to the device in Figure 2 The web cage 6 receives segments of the industrial textile F cut through the longitudinal direction and the cross direction. However, if cutting of full-width samples is desired, the cutting blade 4c should be located on the opposite side of the nip N formed between the drive roller 2 and the back roller 3 or another cutting blade should be provided on the opposite side of the nip N. If a cutting blade is provided on the opposite side of the nip N, a cutting table can also be provided on the opposite side.
[0049] It will be apparent to those skilled in the art that the concept of the present application can be implemented in various ways as technology advances. The present application and its embodiments are not limited to the examples described above but can vary within the scope of the claims.
Claims
1. An apparatus (1) for pre-treating the recycling of industrial textiles (F), characterized by, The apparatus has a feed direction (D) and a cross direction (C), the apparatus (1) comprising a movable frame (7) and a plurality of components mounted on the frame (7), wherein the plurality of components comprises a nip (N) with a drive roll (2) and at least one cutting blade (4a, 4b, 4c).
2. The apparatus of claim 1, wherein, The apparatus comprises a cutting table (10).
3. The apparatus of claim 2, wherein, In the feed direction (D) of the apparatus (1), the at least one cutting blade (4a, 4b, 4c) and the cutting table (10) are located before and / or after the nip (N).
4. The apparatus of any one of claims 1 to 3, wherein, The apparatus (1) comprises a tensioning apparatus (9) located before the nip (N) in the feed direction (D) of the apparatus (1).
5. The apparatus of any one of claims 1 to 3, wherein, The cutting blade (4a, 4b) is arranged to cut in the feed direction (D).
6. The apparatus of claim 5, wherein, The apparatus comprises more than one cutting blade (4a, 4b), which cutting blades (4a, 4b) are assembled at a predetermined interval.
7. The apparatus of claim 5, wherein, The apparatus comprises a fixed cutting blade (4a).
8. The apparatus of claim 6, wherein, The apparatus comprises a fixed cutting blade (4a).
9. The apparatus of claim 5, wherein, The apparatus comprises a rotatable or adjustable cutting blade (4b).
10. The apparatus of claim 6, wherein, The apparatus comprises a rotatable or adjustable cutting blade (4b).
11. The apparatus according to any of the preceding claims 1 to 3, characterized in that, The cutting blade is arranged to cut spirally.
12. The apparatus of any one of claims 1 to 3, wherein, The apparatus (1) comprises at least one blade (4c) arranged to cut in the cross direction (C).
13. The apparatus of any one of claims 1 to 3, wherein, The apparatus (1) comprises an identification tool (13) arranged to identify whether the technical textile (F) is recyclable.
14. The apparatus of any one of claims 1 to 3, wherein, The apparatus is used for pre-treatment of recycling of technical textiles (F) from a fiber web machine.