Ultra-high molecular weight polyethylene fiber gel silk oil discharge device and method

Abstract

The invention discloses an ultra-high molecular weight polyethylene fiber gel silk oil discharge device which comprises a box body, a plurality of partition plates arranged in the box body and a rotating shaft which is rotatably arranged and penetrates through the partition plates, and a containing cavity for containing gel silk is formed between every two adjacent partition plates. The rotating shaft is arranged to be used for winding the gel silk located in the containing cavity and driving the gel silk to rotate after silk winding is completed. The oil discharge device for the ultra-high molecular weight polyethylene fiber gel silk can greatly shorten the time required for oil and water discharge of the gel silk, reduce the time cost and improve the production rate. The invention also discloses an ultra-high molecular weight polyethylene fiber gel silk oil discharge method.

Description

Technical Field

[0001] The present invention belongs to the technical field of fiber spinning. Specifically, the present invention relates to an oil drainage device and method for gel filaments of ultra-high molecular weight polyethylene fibers. Background Art

[0002] Ultra-high molecular weight polyethylene (UHMWPE) fibers, with their excellent physical properties such as extremely high strength, wear resistance, and chemical stability, have been widely used in multiple industrial fields such as bulletproof vests, high-performance ropes, sports goods, and composite materials. Currently, the mainstream production process for this fiber is the wet spinning technology.

[0003] In the wet spinning process, first, ultra-high molecular weight polyethylene powder needs to be mixed with a suitable solvent. After heating and stirring, the polyethylene powder is completely dissolved in the solvent to form a uniform polymer solution. This step is crucial to ensure the smooth progress of the subsequent spinning process and the stability of fiber properties.

[0004] Next, the polymer solution is fed into the spinning device and extruded in the form of a continuous fine stream through a precisely designed spinneret. The extruded solution fine stream immediately enters a low-temperature water bath environment, and this process is called rapid cooling. In the water bath, the polymer chains quickly solidify to form so-called "gel precursor filaments". Rapid cooling helps maintain the fineness and uniformity of the fibers and has an important impact on the physical properties of the final fibers.

[0005] After the gel precursor filaments are fished out from the water bath, they are collected in a silk storage barrel. In the silk storage barrel, the gel filaments need to be left standing for a long time to balance, in order to drain the residual solvent and moisture inside the fibers. This step is crucial for reducing the porosity in the fibers, increasing the density and strength of the fibers, but at the same time, it is the most time-consuming part of the entire production process. The long-time standing balance not only increases the production cost but also limits the improvement of the production rate.

[0006] For example, the Chinese patent with the application number 201610180675.8 discloses a silk storage barrel with a moving frame, including a silk storage barrel, a moving frame, a handle, a rotating frame, and rollers. The silk storage barrel is welded inside the moving frame by welding. There are at least 3 - 4 handles on the outer side of the middle part of the moving frame, and at least 3 rotating frames at the bottom of the moving frame. The rollers are fixedly installed in the corresponding rotating frames through rotating shafts.

[0007] It is desired to provide an oil drainage device for gel filaments of ultra-high molecular weight polyethylene fibers, especially regarding how to shorten the time required for draining oil and water from the gel filaments, reduce the time cost, and improve the production rate. Summary of the Invention

[0008] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides an oil draining device for ultra-high molecular weight polyethylene fiber gel filaments, aiming to improve the production rate.

[0009] To achieve the above object, the technical solution adopted by the present invention is as follows: An oil draining device for ultra-high molecular weight polyethylene fiber gel filaments includes a box body, a partition plate arranged in the box body, and a rotating shaft rotatably arranged and passing through the partition plate. A plurality of partition plates are provided, and a containing cavity for containing the gel filaments is formed between two adjacent partition plates. The rotating shaft is arranged to wind the gel filaments located in the containing cavity and drive the gel filaments to rotate after the wire collection is completed.

[0010] A through hole is provided on the partition plate, and a first bearing is arranged in the through hole. The first bearing is sleeved on the rotating shaft.

[0011] A pin is arranged on the first bearing, and a jack for inserting the pin is arranged on the partition plate.

[0012] The rotating shaft is installed on the box body through two second bearings, and the partition plate is located between the two second bearings.

[0013] A clamping groove is arranged on the inner wall of the box body, and the edge of the partition plate is embedded in the clamping groove.

[0014] The rotating shaft is connected to a driving mechanism, and the driving mechanism is located outside the box body.

[0015] A filtering device is arranged inside the box body, and the filtering device is located below the partition plate.

[0016] The filtering device includes a filter screen, and an oil draining port is arranged at the bottom of the box body. The oil draining port is located below the filter screen.

[0017] An oil storage cavity is arranged inside the box body. The oil storage cavity is located below the filter screen. The oil storage cavity is communicated with the oil draining port, and the inner wall surface of the oil storage cavity is inclined.

[0018] The present invention also provides an oil draining method for ultra-high molecular weight polyethylene fiber gel filaments, using the above-mentioned oil draining device for ultra-high molecular weight polyethylene fiber gel filaments, and including the steps of:

[0019] S1. Place the gel filaments in the containing cavity and wind the gel filaments on the rotating shaft;

[0020] S2. The rotating shaft rotates to collect the gel filaments;

[0021] S3. The rotating shaft drives the gel filaments to rotate, and the rotating direction of the rotating shaft is the same as the rotating direction in step S2;

[0022] S4. Wire drawing, where the rotating shaft rotates, and the rotation direction of the rotating shaft is opposite to that in step S3.

[0023] The degreasing device for gel-spun ultra-high molecular weight polyethylene fibers of the present invention can greatly shorten the time required for degreasing and draining the gel-spun fibers, reduce the time cost, and improve the production rate. Brief Description of the Drawings

[0024] This specification includes the following drawings, and the shown contents are respectively:

[0025] Figure 1 is a schematic internal structure diagram of the degreasing device for gel-spun ultra-high molecular weight polyethylene fibers of the present invention;

[0026] Figure 2 is a schematic installation structure diagram of the rotating shaft and the partition;

[0027] Figure 3 is a schematic structure diagram of the partition;

[0028] Figure 4 is a schematic layout structure diagram of the partition;

[0029] Figure 5 is a schematic layout structure diagram of the pin;

[0030] Figure 6 is a schematic overall structure diagram of the degreasing device for gel-spun ultra-high molecular weight polyethylene fibers of the present invention;

[0031] Figure 7 is a schematic structure diagram of the filtering device;

[0032] In the figures, the labels are: 1. casters; 2. box body; 3. driving motor; 4. first bearing; 5. second bearing; 6. box cover; 7. rotating shaft; 8. partition; 9. pin; 10. filter screen; 11. oil drain port; 12. valve; 13. first handle; 14. second handle; 15. frequency converter; 16. control panel; 17. card slot; 18. inclined inner wall surface. Detailed Embodiments

[0033] The following is a further detailed description of the specific embodiments of the present invention with reference to the drawings through the description of the embodiments, aiming to help those skilled in the art have a more complete, accurate and in-depth understanding of the concept and technical solution of the present invention and facilitate its implementation.

[0034] It should be noted that in the following embodiments, the "first" and "second" do not represent an absolute distinction relationship in structure and / or function, nor represent the execution order, but are only for the convenience of description.

[0035] As Figures 1 to 7As shown in the figure, the present invention provides an oil drainage device for ultra-high molecular weight polyethylene fiber gel filaments, which includes a box body 2, a partition plate 8 arranged in the box body 2, and a rotating shaft 7 rotatably arranged and passing through the partition plate 8. A plurality of partition plates 8 are provided, and an accommodating cavity for accommodating the gel filaments is formed between two adjacent partition plates 8. The rotating shaft 7 is arranged to wind the gel filaments located in the accommodating cavity and drive the gel filaments to rotate after the wire collection is completed.

[0036] Specifically, as Figure 1 shown, the box body 2 has a hollow structure inside. The axis of the rotating shaft 7 is parallel to the first direction, and the first direction is the horizontal direction. All the partition plates 8 are arranged in sequence along the axial direction of the rotating shaft 7 and are equally spaced. The partition plates 8 are vertically arranged. Each accommodating cavity is a rectangular cavity formed by surrounding with the inner wall surfaces of two adjacent partition plates 8 and the box body 2. Through holes are provided on the partition plates 8, and the through holes are through holes penetrating along the thickness direction of the partition plates 8. A first bearing 4 is arranged in the through holes, and the first bearing 4 is sleeved on the rotating shaft 7. The rotating shaft 7 is installed on the box body 2 through two second bearings 5, and all the partition plates 8 are located between the two second bearings 5. The rotating shaft 7 is connected with a driving mechanism, and the driving mechanism is located outside the box body 2 and is used to drive the rotating shaft 7 to rotate around the axis.

[0037] As Figure 1 shown, in the embodiment of the present invention, the partition plate 8 divides the space inside the box body 2 into several regions. There is a rotating shaft 7 inside the box body 2, and the rotating shaft 7 passes through the partition plate 8. When collecting the wire, the gel filaments are wound on the rotating shaft 7 and the rotating shaft 7 is started to collect the wire. After the wire collection is completed, the rotating shaft 7 is controlled to rotate at a high speed, and the white oil and water inside and outside the gel filaments are discharged through the centrifugal force, and the oil drainage process is completed. When discharging the wire, the rotating shaft 7 rotates in the reverse direction to discharge the wire. This oil drainage device can greatly shorten the time required for draining oil and water from the gel filaments, reduce the time cost, and improve the production rate.

[0038] As Figure 1 shown, in the embodiment of the present invention, the driving mechanism mainly includes a driving motor 3. The output end of the driving motor 3 is fixedly connected to one end of the rotating shaft 7, and the driving motor 3 is fixedly installed on the box body 2.

[0039] As Figure 3 and Figure 5 shown, in the embodiment of the present invention, a plug 9 is arranged on the first bearing 4, and a jack for inserting the plug 9 is arranged on the partition plate 8. The plug 9 is fixedly arranged on the outer ring of the first bearing 4, the plug 9 extends upward towards the outside of the outer ring, the plug 9 is vertically arranged, and the jack starts from the inner circular surface of the through hole and extends upward towards the inside of the partition plate 8. By inserting the plug 9 into the jack, the partition plate 8 can be fixed. This structure can fix the outer ring of the first bearing 4 to the partition plate 8, and the outer ring of the first bearing 4 will not rotate, preventing friction between the outer ring and the partition plate 8 and reducing the wear of the partition plate 8.

[0040] As Figure 3 shown, in the embodiment of the present invention, a clamping groove 17 is provided on the inner wall of the box body 2, and the edge of the partition plate 8 is embedded in the clamping groove 17. The clamping groove 17 is used to position the partition plate 8 in the box body 2, and a plurality of clamping grooves 17 are provided. The clamping groove 17 extends downward from the top surface of the box body 2, and the clamping groove 17 forms an opening on the top surface of the box body 2. The partition plate 8 can be drawn out from the clamping groove 17 and separated from the box body 2. During the production processes of different technologies, the number of gel fibers is different, and a plurality of clamping grooves 17 can be used to insert the corresponding partition plates 8 according to the number of gel fibers, so that the number of partition plates 8 can be adjusted.

[0041] As Figure 2 and Figure 3 shown, in the embodiment of the present invention, an opening is provided on the partition plate 8. The opening extends upward from the bottom surface of the partition plate 8 to a through hole, and the opening is not a through hole extending along the thickness direction of the partition plate 8. The shape of the opening is triangular.

[0042] As Figure 6 shown, in the embodiment of the present invention, a first handle 13 is provided on the outer wall surface of the box body 2, and a box cover 6 is provided on the top of the box body 2. The box cover 6 is used to control the opening and closing of the opening provided on the top of the box body 2. The box cover 6 is rotatably connected to the box body 2, and a second handle 14 is provided on the box cover 6.

[0043] As Figure 1 shown, in the embodiment of the present invention, casters 1 are provided on the bottom plate of the box body 2, and a total of four casters 1 are provided.

[0044] As Figure 1 and Figure 7 shown, in the embodiment of the present invention, a filtering device is provided inside the box body 2, and the filtering device is located below the partition plate 8. The filtering device mainly includes a filter net 10. An oil drain port 11 is provided at the bottom of the box body 2, and a valve 12 is provided at the oil drain port 11. The valve 12 is used to control the opening and closing of the oil drain port 11. The oil drain port 11 is located below the filter net 10. The filter net 10 is horizontally arranged. The filter net 10 is used to filter the oil liquid falling from the upper accommodating cavity, and the filtered oil liquid enters the lower oil storage cavity. The filtered oil liquid can be recycled to reduce the production cost, and the filter net 10 can prevent the gel fibers from being immersed in the oil liquid.

[0045] As Figure 1 and Figure 7As shown, in the embodiment of the present invention, an oil storage cavity is arranged inside the box body 2. The oil storage cavity is located below the filter screen 10 and is communicated with the oil discharge port 11. The inner wall surface of the oil storage cavity is inclined. The oil storage cavity is formed by surrounding multiple inner wall surfaces. The inner wall surface of the oil storage cavity extends obliquely from the upper end to the lower end. The distance between the upper ends of two opposite inner wall surfaces in the oil storage cavity is greater than the distance between the lower ends. The inner wall surface of the oil storage cavity is used to guide the oil liquid to flow towards the lower oil discharge port 11, facilitating the collection of the oil liquid and enabling the oil liquid to be discharged from the oil discharge port 11 at a relatively fast speed.

[0046] As Figure 7 shown, in the embodiment of the present invention, a control panel 16 is arranged on the box body 2. The control panel 16 is connected to the control system. The control system is connected to the frequency converter 15. The frequency converter 15 is connected to the driving motor 3. When threading, the rotation speed is set on the control panel 16. The control system receives and then transmits it to the frequency converter 15. The frequency converter 15 controls the rotation speed and direction of the driving motor 3, so that the wire winding speed of the gel fiber on the rotating shaft 7 is equal to the wire dropping speed. When discharging oil, the rotation speed is increased, and the rotation direction is the same as the rotation direction during wire winding. When discharging wire, the driving motor 3 rotates in the reverse direction, and the rotation speed is adjusted to make the wire discharging normal and stable.

[0047] The present invention also provides a method for discharging oil from ultra-high molecular weight polyethylene fiber gel filaments. The ultra-high molecular weight polyethylene fiber gel filament oil discharging device with the above structure is adopted, and the method includes the following steps:

[0048] S1. Place the gel filaments in the accommodating cavity and wind the gel filaments around the rotating shaft 7.

[0049] S2. The rotating shaft 7 rotates to wind the gel filaments.

[0050] S3. The rotating shaft 7 drives the gel filaments to rotate, and the rotation direction of the rotating shaft 7 is the same as the rotation direction in step S2.

[0051] S4. Discharge wire, the rotating shaft 7 rotates, and the rotation direction of the rotating shaft 7 is opposite to the rotation direction in step S3.

[0052] In the above step S1, first, according to the number of gel filaments, the corresponding partition plate 8 is inserted into the box body 2 to divide the space inside the box body 2 into several regions with the same size. Only one strand of gel filament is in each accommodating cavity, and the operator manually winds the gel filament around the rotating shaft 7.

[0053] In the above step S2, the driving mechanism drives the rotating shaft 7 to rotate around the axis at a first set rotation speed to wind the gel filaments, and after the wire drops, the wire winding speed and the wire dropping speed are kept the same.

[0054] In the above step S3, after the wire dropping is completed, the lid 6 is closed. The lid 6 seals the top opening of the box body 2. The valve 12 is opened, and the driving mechanism drives the rotating shaft 7 to rotate around the axis at a second set speed. At this time, the rotating direction of the rotating shaft 7 is the same as that in step S2, and the second set speed is greater than the first set speed. The second set speed is generally set to be from 600 r / min to 1200 r / min.

[0055] In the above step S3, after the rotating shaft 7 drives the gel fiber to rotate for a set time, most of the white oil and water contained in the gel fiber are discharged, and the oil liquid enters the oil storage cavity at the bottom of the box body 2.

[0056] In the above step S4, when the wire is taken out, the lid 6 is opened, the head of the gel fiber is tied to the previous gel fiber, and then the driving mechanism drives the rotating shaft 7 to rotate around the axis. At this time, the rotating direction of the rotating shaft 7 is opposite to that in step S3. The rotating shaft 7 rotates in the reverse direction to take out the wire, and the gel fiber wound on the rotating shaft 7 is released.

[0057] The present invention has been described exemplarily in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present invention; or without improvement, the above concept and technical solution of the present invention are directly applied to other occasions, they are all within the protection scope of the present invention.

Claims

1. Ultra-high molecular weight polyethylene fiber gel spinning oil drainage device, characterized in that, It includes a box body, a partition plate arranged inside the box body, and a rotating shaft rotatably arranged and passing through the partition plate. A plurality of partition plates are provided, and an accommodating cavity for accommodating the gel fiber is formed between two adjacent partition plates. The rotating shaft is arranged to wind the gel fiber located in the accommodating cavity and drive the gel fiber to rotate after the wire collection is completed.

2. The oil draining device for gel fiber of ultra-high molecular weight polyethylene fiber according to claim 1, characterized in that, Through holes are provided on the partition plate, and a first bearing is arranged in the through holes. The first bearing is sleeved on the rotating shaft.

3. The oil-draining device for gel-spun ultra-high molecular weight polyethylene fibers according to claim 2, characterized in that, A pin is arranged on the first bearing, and a jack for inserting the pin is arranged on the partition plate.

4. The ultra-high molecular weight polyethylene fiber gel spinning oil draining device according to any one of claims 1 to 3, characterized in that The rotating shaft is installed on the box body through two second bearings, and the partition plate is located between the two second bearings.

5. The ultra-high molecular weight polyethylene fiber gel spinning oil draining device according to any one of claims 1 to 3, characterized in that, A clamping groove is arranged on the inner wall of the box body, and the edge of the partition plate is embedded in the clamping groove.

6. The ultra-high molecular weight polyethylene fiber gel spinning oil draining device according to any one of claims 1 to 3, characterized in that, The rotating shaft is connected to a driving mechanism, and the driving mechanism is located outside the box body.

7. The oil draining device for gel fiber of ultra-high molecular weight polyethylene according to any one of claims 1 to 3, characterized in that, A filtering device is arranged inside the box body, and the filtering device is located below the partition plate.

8. The oil draining device for gel spun ultra-high molecular weight polyethylene fibers according to claim 7, wherein, The filtering device includes a filter screen, and an oil drain port is arranged at the bottom of the box body. The oil drain port is located below the filter screen.

9. The oil draining device for gel fiber of ultra-high molecular weight polyethylene fiber according to claim 8, characterized in that, An oil storage cavity is arranged inside the box body. The oil storage cavity is located below the filter screen. The oil storage cavity is communicated with the oil drain port, and the inner wall surface of the oil storage cavity is inclined.

10. Method for draining oil from gel filaments of ultra-high molecular weight polyethylene fibers, characterized in that, Adopt the ultra-high molecular weight polyethylene fiber gel fiber oil draining device according to any one of claims 1 to 9, and it includes the steps: S1. Place the gel fiber in the accommodating cavity and wind the gel fiber around the rotating shaft. S2. The rotating shaft rotates to collect the gel fiber. S3. The rotating shaft drives the gel fiber to rotate, and the rotating direction of the rotating shaft is the same as the rotating direction in step S2. S4. Feed the wire. The rotating shaft rotates, and the rotating direction of the rotating shaft is opposite to the rotating direction in step S3.

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