A drying device for producing an ultrahigh molecular weight polyethylene fiber

Abstract

The present application relates to the technical field of drying, in particular to a kind of drying device for ultra-high molecular weight polyethylene fiber production, including drying cabinet, the two sides of the drying cabinet are symmetrically provided with import and export, the inner wall of drying cabinet and located the side of import and export is rotatably installed with the support roller for supporting fiber, drying cabinet is equipped with drying unit, still including pretreatment subassembly, including the support frame being set to drying cabinet side, the placement roller for supporting fiber being installed on support frame, the push mechanism for being used to the fiber that is located placement roller top for unfolding, the extrusion unit for being used to the fiber that is pressed to the fiber that is unfolded and the limiting piece being set to placement roller.The present application can be flattened to the fiber that is placed in the top end of placement roller by the design of push mechanism, realize that fiber is stored thickness is consistent, the problem that the inside of fiber placed is not fully dried when drying is solved due to the uneven thickness of fiber placed, effectively improve fiber drying quality.

Description

Technical Field

[0001] This invention relates to the field of drying technology, and in particular to a drying apparatus for the production of ultra-high molecular weight polyethylene fibers. Background Technology

[0002] Ultra-high molecular weight polyethylene (UHMWPE) fiber is the third generation of high-performance fibers following carbon fiber and aramid fiber. It is a fiber with a highly oriented, highly crystalline, extended chain structure. Due to its extremely low density, high strength, high modulus, excellent shock absorption properties, good impact resistance, and corrosion resistance, it has broad application prospects in defense, aerospace, marine, and medical fields. UHMWPE is prepared into a uniform spinning solution with a solvent. This solution is fed into a twin-screw extruder for dissolution and then extruded through a spinneret. It is then rapidly cooled and solidified in a coagulation bath to form nascent gel fibers containing a large amount of solvent. The solvent is then extracted using an extractant, and the fibers are dried to form dry gel fibers.

[0003] Existing polyethylene fibers are dried using hot air, which is inefficient. The fibers are not flattened before drying, resulting in uneven fiber thickness and insufficient drying inside, which in turn affects the drying quality. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a drying device for the production of ultra-high molecular weight polyethylene fiber, so as to solve the problem that the fiber stacking thickness is uneven due to the failure to flatten the stacked fiber before drying, resulting in insufficient drying inside the fiber during drying.

[0005] To achieve the above objectives, the present invention provides a drying apparatus for the production of ultra-high molecular weight polyethylene fibers, comprising a drying chamber, wherein inlet and outlet are symmetrically arranged on both sides of the drying chamber, and a support roller for supporting fibers is rotatably mounted on the inner wall of the drying chamber on one side of the inlet and outlet. The drying chamber is equipped with a drying unit, and further includes: The pretreatment assembly includes a support frame disposed on one side of the drying chamber, a placement roller mounted on the support frame for supporting fibers, a pushing mechanism located above the placement roller for spreading the fibers, a pressing unit for pressing the spread fibers, and a limiting member disposed on the placement roller.

[0006] Preferably, the drying unit includes steam rollers rotatably mounted on the inner wall of the drying chamber and arranged longitudinally in a staggered manner. A steam generator is provided on one side of the drying chamber, and a steam pipe for communicating with the steam rollers is provided on the steam generator. The drying unit also includes a heating plate installed on the inner wall of the drying chamber, and a fan is installed on the top of the drying chamber.

[0007] Preferably, the pushing mechanism includes a pressing cylinder that is lifted and lowered above the drying chamber, a slot opened on the outer wall of the pressing cylinder, a sliding assembly on the pressing cylinder, and an actuating unit on the sliding assembly for spreading the fibers.

[0008] Preferably, the sliding assembly includes a first sleeve plate and a second sleeve plate sleeved on the outer wall of the pressing cylinder. The first sleeve plate and the second sleeve plate form an annular structure. The first sleeve plate and the second sleeve plate are connected by a locking member. A movable cylinder that slides inside the slot is installed on the inner wall of the second sleeve plate. A connecting member is rotatably connected to the outer walls of the first sleeve plate and the second sleeve plate. A mover for driving the connecting member to move laterally is provided on the support frame.

[0009] Preferably, the extrusion unit includes sliding openings on both sides of the support frame, and a first sliding plate rotatably connected to the pressing cylinder is slidably installed on the inner wall of the sliding opening. A motor is installed on one of the first sliding plates and connected to one end of the pressing cylinder. An electric push rod is installed at the bottom end of the sliding opening for pushing the first sliding plate up and down.

[0010] Preferably, the mover includes a lead screw rotatably mounted on a first slide plate and located above the pressing cylinder, wherein a second motor connected to the lead screw is mounted on another first slide plate, and a moving seat is threaded onto the lead screw, the moving seat being connected to a connecting member.

[0011] Preferably, the connecting member includes a groove formed on the outer wall of sleeve plate one and sleeve plate two, and the bottom end of the movable seat is connected to a second sliding plate that slides inside the groove.

[0012] Preferably, the actuation unit includes a motor three disposed on the inner wall of the moving cylinder, the output shaft of the motor three is connected to a gear, the moving cylinder is symmetrically provided with moving slots on both sides, the moving slots are slidably connected with moving blocks, the two moving blocks are fixedly connected to a toothed plate that meshes with the gear at one end close to each other, the two moving blocks are fixedly connected to a lifting plate at the other end, and the bottom end of the lifting plate is fixedly connected to a push plate.

[0013] Preferably, the locking component includes bases installed at the ends of the first and second sleeve plates and arranged symmetrically, with a locking rod passing through the two contacting bases, and a locking block threaded onto the locking rod.

[0014] Preferably, the limiting member includes baffles slidably disposed at both ends of the placement roller for stopping the fiber during flat laying, and an electric push rod symmetrically installed on both sides of the support frame to push the baffles to move.

[0015] The beneficial effects of this invention are as follows: The design of the pushing mechanism allows for the flattening of fibers placed at the top of the placement roller, achieving a uniform fiber stacking thickness. This solves the problem of uneven fiber thickness leading to insufficient internal drying during the drying process, effectively improving fiber drying quality. The limiting component restricts the flattened fibers, preventing them from detaching from the extrusion area. The extrusion unit extrudes the evenly laid fibers, effectively removing moisture and placing them on the support roller through the inlet and outlet, where they are then wound onto the steam roller. Simultaneously, in conjunction with the drying unit, this effectively achieves the fiber drying operation, thereby significantly accelerating the fiber drying speed. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is an embodiment of the present invention. Figure 1 A sectional view; Figure 3 This is a schematic diagram of the preprocessing component according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the pushing mechanism structure according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the toggle unit according to an embodiment of the present invention; Figure 6 This is an embodiment of the present invention. Figure 5 A sectional view.

[0018] The diagram is marked as follows: 1. Drying oven; 2. Inlet / outlet; 3. Support roller; 4. Steam roller; 5. Heating plate; 6. Steam generator; 7. Steam pipe; 8. Fan; 9. Locking block; 10. Support frame; 11. Placement roller; 12. Baffle; 13. Electric push rod one; 14. Slide opening; 15. First slide plate; 16. Pressing cylinder; 17. Motor one; 18. Groove; 19. Sleeve one; 20. Sleeve two; 21. Moving cylinder; 22. Slide groove; 23. Second slide plate; 24. Moving seat; 25. Lead screw; 26. Motor two; 27. Electric push rod two; 28. Motor three; 29. ​​Gear; 30. Moving groove; 31. Moving block; 32. Toothed plate; 33. Lifting plate; 34. Push plate; 35. Base; 36. Locking rod. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0020] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] This specification provides a drying apparatus for the production of ultra-high molecular weight polyethylene fibers, as illustrated in one or more embodiments. Figure 1 , Figure 2 and Figure 3 As shown, the device includes a drying chamber 1, with inlets and outlets 2 symmetrically arranged on both sides. A support roller 3 for supporting fibers is rotatably mounted on the inner wall of the drying chamber 1, located on one side of the inlets and outlets 2. The drying chamber 1 is equipped with a drying unit and also includes: The pretreatment assembly includes a support frame 10 disposed on one side of the drying chamber 1, a placement roller 11 mounted on the support frame 10 for supporting fibers, a pushing mechanism located above the placement roller 11 for spreading the fibers, a pressing unit for pressing the spread fibers, and a limiting member disposed on the placement roller 11.

[0022] During use, the operator places the fibers to be dried on the top of the placement roller 11. However, the fiber thickness is uneven, resulting in insufficient drying inside the drying chamber 1 when the fibers enter through the inlet / outlet 2. Therefore, the design of the pushing mechanism can flatten the fibers placed on the top of the placement roller 11, achieving a uniform fiber thickness and improving the fiber drying quality. The limiting component can restrict the flattened fibers to prevent them from leaving the extrusion area. The extrusion unit can extrude the evenly flattened fibers, effectively removing moisture and placing them on the support roller 3 through the inlet / outlet 2 and winding them around the steam roller 4. Simultaneously, in conjunction with the drying unit, the drying operation of the fibers is effectively realized, thereby effectively accelerating the drying speed of the fibers.

[0023] In embodiments of the present invention, such as Figure 1 and Figure 2As shown, the drying unit includes steam rollers 4 rotatably mounted on the inner wall of the drying chamber 1, arranged longitudinally in a staggered pattern. A steam generator 6 is provided on one side of the drying chamber 1, and a steam pipe 7 is provided on the steam generator 6 for connecting with the steam rollers 4. The drying unit also includes a heating plate 5 installed on the inner wall of the drying chamber 1, and a fan 8 is installed at the top of the drying chamber 1. With this design, the steam generator 6 transmits high-temperature gas to the steam pipe 7, and then through the steam pipe 7 to the steam rollers 4. The steam rollers 4 contact the fibers to achieve drying. This close-fitting drying method effectively accelerates the drying efficiency. At the same time, the design of the heating plate 5 increases the fiber drying speed and saves drying time. The design of the fan 8 enables air drying of the fibers, and the operation of the fan 8 can accelerate the airflow, further accelerating the fiber drying speed.

[0024] In embodiments of the present invention, such as Figure 1 , Figure 2 and Figure 3 As shown, the pushing mechanism includes a pressing cylinder 16 that is lifted and positioned above the drying chamber 1, a slot 18 formed on the outer wall of the pressing cylinder 16, a sliding assembly on the pressing cylinder 16, and an actuating unit on the sliding assembly for spreading the fibers evenly. This design allows the pressing cylinder 16 to support the sliding assembly and simultaneously compress the fibers on the placement roller 11, effectively removing moisture. Combined with the actuating unit, this facilitates the even spreading of the fibers to be dried, enabling pre-treatment of the fibers and solving the problem of uneven fiber thickness affecting subsequent drying efficiency and quality.

[0025] In embodiments of the present invention, such as Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the sliding assembly includes a first sleeve plate 19 and a second sleeve plate 20 fitted onto the outer wall of the pressing cylinder 16. The first sleeve plate 19 and the second sleeve plate 20 form a ring structure. The first sleeve plate 19 and the second sleeve plate 20 are connected by a locking member. A movable cylinder 21 that slides inside the slot 18 is installed on the inner wall of the second sleeve plate 20. A connecting member is rotatably connected to the outer walls of the first sleeve plate 19 and the second sleeve plate 20. A mover is provided on the support frame 10 for driving the connecting member to move laterally. With this design, the operator fits the first sleeve plate 19 and the second sleeve plate 20 onto the pressing cylinder 16 and positions the movable cylinder 21 inside the slot 18. Then, the first sleeve plate 19 and the second sleeve plate 20 are connected by the locking member. The mover then drives the first sleeve plate 19, the second sleeve plate 20, the connecting member, and the actuating unit to move synchronously, which facilitates the actuating unit to push the fibers on the placement roller 11 to spread evenly, effectively solving the problem of uneven fiber thickness.

[0026] In embodiments of the present invention, such as Figure 1 and Figure 3As shown, the extrusion unit includes sliding openings 14 on both sides of the support frame 10. A first sliding plate 15 rotatably connected to the pressing cylinder 16 is slidably installed on the inner wall of the sliding opening 14. A motor 17 connected to one end of the pressing cylinder 16 is installed on one of the first sliding plates 15. An electric push rod 27 for pushing the first sliding plate 15 up and down is installed at the bottom of the sliding opening 14. With this design, after the fibers are laid flat, the limiting member moves to the inner wall of the support frame 10, and the sliding group moves to one end of the pressing cylinder 16. Then, the motor 17 is started, which drives the pressing cylinder 16 to rotate, so that the pressing cylinder 16 can be set with the slot 18 facing upward. Then the motor 17 is turned off. At the same time, the pressing cylinder 16 drives the toggle unit to rotate 180 degrees. Then the electric push rod 27 is started, which drives the first slide plate 15 to slide in the sliding opening 14, and causes the pressing cylinder 16 to move down to squeeze the fibers at the top of the placement roller 11. In conjunction with the movement of the fibers, the dehydration operation is effectively realized, thereby accelerating the drying efficiency.

[0027] In embodiments of the present invention, such as Figure 1 , Figure 3 and Figure 4 As shown, the mover includes a lead screw 25 rotatably mounted on a first sliding plate 15 and located above a pressing cylinder 16. A second motor 26 connected to the lead screw 25 is mounted on another first sliding plate 15. A moving seat 24 is threaded onto the lead screw 25 and connected to a connecting component. This design allows the second motor 26 to be activated when fibers need to be flattened. The motor 26 drives the lead screw 25 to rotate. Through the threaded connection between the lead screw 25 and the moving seat 24, and the action of the connecting component, the moving seat 24 causes the first sleeve 19 and the second sleeve 20 to move horizontally. This, in turn, causes the actuating unit to move horizontally, pushing the fibers to lay flat, effectively solving the problem of uneven fiber thickness.

[0028] In embodiments of the present invention, such as Figure 5 and Figure 6 As shown, the connecting component includes a groove 22 formed on the outer wall of sleeve 19 and sleeve 20, and a second sliding plate 23 that slides inside the groove 22 is connected to the bottom end of the movable seat 24. This design allows the groove 22 to slide outside the second sliding plate 23 when sleeve 19 and sleeve 20 rotate, effectively enabling the flipping of the pressing cylinder 16. Simultaneously, the rotational engagement between the second sliding plate 23 and the groove 22 effectively allows for lateral movement of sleeve 19 and sleeve 20.

[0029] In embodiments of the present invention, such as Figure 5 and Figure 6As shown, the actuation unit includes a motor 28 disposed on the inner wall of the moving cylinder 21. The output shaft of the motor 28 is connected to a gear 29. The moving cylinder 21 has symmetrical moving slots 30 on both sides. Moving blocks 31 are slidably connected inside the moving slots 30. A toothed plate 32 that meshes with the gear 29 is fixedly connected to one end of the two moving blocks 31 that are close to each other. A lifting plate 33 is fixedly connected to one side of the two moving blocks 31 that are far apart from each other. A push plate 34 is fixedly connected to the bottom end of each lifting plate 33. With this design, starting motor 28 will drive gear 29 to rotate. Through the meshing connection between gear 29 and toothed plate 32, one toothed plate 32 will move upward and the other toothed plate 32 will move downward. This will cause moving block 31 to slide in moving groove 30, thus moving one push plate 34 upward and the other push plate 34 downward. This design places the push plate 34, which is away from the forward direction, at the bottom. By adjusting the distance between the bottom end of push plate 34 and the top surface of placing roller 11, the fiber placement thickness can be controlled. Fibers that are easy to stack can be spread out and laid flat on placing roller 11, achieving uniform fiber placement thickness, thereby accelerating the drying process.

[0030] In embodiments of the present invention, such as Figure 5 and Figure 6 As shown, the locking mechanism includes bases 35 symmetrically arranged and installed at the ends of sleeve 19 and sleeve 20. A locking rod 36 passes through the two contacting bases 35, and a locking block 9 is threaded onto the locking rod 36. This design allows for locking of the bases 35 by passing the locking rod 36 through the two bases 35 and installing the locking block 9 on the locking rod 36, thereby locking sleeve 19 and sleeve 20. It should be noted that the locking rod 36 is a screw, and the locking block 9 is a nut.

[0031] In embodiments of the present invention, such as Figure 1 and Figure 3 As shown, the limiting component includes baffles 12 slidably disposed at both ends of the placement roller 11 to stop the fiber from being laid flat. Electric push rods 13, which push the baffles 12 to move, are symmetrically installed on both sides of the support frame 10. With this design, when fiber flattening is required, activating the electric push rods 13 will move the baffles 12, ensuring that the baffles 12 stop within the fiber flattening range, effectively facilitating subsequent fiber compression.

[0032] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0033] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A drying device for producing ultra-high molecular weight polyethylene fiber, comprising a drying chamber (1), wherein inlet and outlet (2) are symmetrically provided on both sides of the drying chamber (1), and a support roller (3) for supporting the fiber is rotatably mounted on the inner wall of the drying chamber (1) and on one side of the inlet and outlet (2), and a drying unit is provided on the drying chamber (1), characterized in that, Also includes: The pretreatment assembly includes a support frame (10) disposed on one side of the drying chamber (1), a placement roller (11) mounted on the support frame (10) for supporting fibers, a pushing mechanism located above the placement roller (11) for spreading the fibers, a pressing unit for pressing the spread fibers, and a limiting member disposed on the placement roller (11).

2. The drying apparatus for producing ultra-high molecular weight polyethylene fiber according to claim 1, characterized in that, The drying unit includes a steam roller (4) that is rotatably installed on the inner wall of the drying box (1) and arranged longitudinally in a staggered manner. A steam generator (6) is provided on one side of the drying box (1). A steam pipe (7) is provided on the steam generator (6) for connecting with the steam roller (4). The drying unit also includes a heating plate (5) installed on the inner wall of the drying box (1). A fan (8) is installed on the top of the drying box (1).

3. The drying apparatus for producing ultra-high molecular weight polyethylene fiber according to claim 1, characterized in that, The pushing mechanism includes a pressing cylinder (16) that is lifted and lowered above the drying box (1), a slot (18) opened on the outer wall of the pressing cylinder (16), a sliding assembly on the pressing cylinder (16), and a prying unit on the sliding assembly for spreading the fibers.

4. The drying apparatus for producing ultra-high molecular weight polyethylene fiber according to claim 3, characterized in that, The sliding assembly includes a first sleeve plate (19) and a second sleeve plate (20) sleeved on the outer wall of the pressing cylinder (16). The first sleeve plate (19) and the second sleeve plate (20) form a ring structure. The first sleeve plate (19) and the second sleeve plate (20) are connected by a locking member. The inner wall of the second sleeve plate (20) is equipped with a movable cylinder (21) that slides inside the slot (18). The outer walls of the first sleeve plate (19) and the second sleeve plate (20) are rotatably connected with a connecting member. The support frame (10) is provided with a mover for driving the connecting member to move laterally.

5. The drying apparatus for producing ultra-high molecular weight polyethylene fiber according to claim 4, characterized in that, The extrusion unit includes a slide (14) on both sides of the support frame (10). A first slide plate (15) rotatably connected to the pressing cylinder (16) is slidably installed on the inner wall of the slide (14). A motor (17) connected to one end of the pressing cylinder (16) is installed on one of the first slide plates (15). An electric push rod (27) for pushing the first slide plate (15) up and down is installed at the bottom of the slide (14).

6. The drying apparatus for producing ultra-high molecular weight polyethylene fiber according to claim 4, characterized in that, The mover includes a lead screw (25) rotatably mounted on a first slide plate (15) and located above a pressing cylinder (16), wherein a second motor (26) connected to the lead screw (25) is mounted on another first slide plate (15), and a moving seat (24) is threaded onto the lead screw (25), the moving seat (24) being connected to a connecting member.

7. The drying apparatus for producing ultra-high molecular weight polyethylene fiber according to claim 6, characterized in that, The connecting component includes a groove (22) formed on the outer wall of the first sleeve (19) and the second sleeve (20), and the bottom end of the movable seat (24) is connected to a second sliding plate (23) that slides inside the groove (22).

8. The drying apparatus for producing ultra-high molecular weight polyethylene fiber according to claim 4, characterized in that, The actuation unit includes a motor three (28) disposed on the inner wall of the moving cylinder (21). The output shaft of the motor three (28) is connected to a gear (29). The moving cylinder (21) is symmetrically provided with moving slots (30) on both sides. Moving blocks (31) are slidably connected inside the moving slots (30). A toothed plate (32) that meshes with the gear (29) is fixedly connected to one end of the two moving blocks (31) that are close to each other. A lifting plate (33) is fixedly connected to one side of the two moving blocks (31) that is far away from each other. A push plate (34) is fixedly connected to the bottom end of the lifting plate (33).

9. The drying apparatus for producing ultra-high molecular weight polyethylene fiber according to claim 4, characterized in that, The locking component includes bases (35) installed at the ends of sleeve plate one (19) and sleeve plate two (20) and symmetrically arranged. A locking rod (36) passes through the two contacting bases (35), and a locking block (9) is threaded onto the locking rod (36).

10. The drying apparatus for producing ultra-high molecular weight polyethylene fiber according to claim 1, characterized in that, The limiting component includes baffles (12) that are slidably disposed at both ends of the placement roller (11) to stop the fiber from being laid flat, and electric push rods (13) that push the baffles (12) to move are symmetrically installed on both sides of the support frame (10).

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