CN217628742U

CN217628742U - Functional type spinning device for spinning by flash evaporation method

Info

Publication number: CN217628742U
Application number: CN202221764993.6U
Authority: CN
Inventors: 李明涛; 董�成; 李东; 王玉阳; 郭晓彤; 刘萍
Original assignee: Yantai Metastar Special Paper Co ltd
Current assignee: Yantai Metastar Special Paper Co ltd
Priority date: 2022-07-07
Filing date: 2022-07-07
Publication date: 2022-10-21
Anticipated expiration: 2032-07-07

Abstract

The utility model relates to a flash distillation method spinning is with functional type spinning unit belongs to spinning equipment technical field, supply with piece, combination formula decompression cabin and spinning pack including the solution that sets gradually, the feed liquor hole has been seted up to the piece is supplied with to the solution, combination formula decompression cabin includes two sections at least decompression cabins, the solution passageway has all been seted up in the decompression cabin, spinning pack includes the spinning piece, a silk hole has been seted up in the spinning piece, feed liquor hole and solution passageway intercommunication have the pressure-reducing orifice, solution passageway and play intercommunication have the spinneret orifice between the silk hole, the internal diameter of pressure-reducing orifice and spinneret orifice is less than the internal diameter of feed liquor hole and silk hole respectively. This application has the advantage of guaranteeing the cellosilk performance.

Description

Functional type spinning device for spinning by flash evaporation method

Technical Field

The utility model relates to a flash distillation method spinning is with functional spinning device belongs to spinning equipment technical field.

Background

The flash evaporation spinning is a spinning method for mixing a high molecular polymer and a solvent into a solution, simultaneously spraying the solution to an environment of normal temperature and normal pressure through a spinneret plate under the condition of high temperature and high pressure, and spraying superfine fiber bundles due to the sudden reduction of pressure and the rapid evaporation of the solvent; the flash evaporation method has extremely high spinning speed, ultrafine fibers are generated by means of high spinning speed, a plurality of single fibers are gathered into a tow, and a three-dimensional structure in a spider web connection mode is formed among the single fibers.

The prior Chinese patent with publication number CN210826455U discloses a melt-blown spinning nozzle structure, which comprises a conveying module and a nozzle module, wherein the conveying module comprises a first substrate, a melt conveying channel and air flow conveying channels symmetrically arranged at two sides of the melt conveying channel; the shower nozzle module is connected in the lower extreme of carrying the module, and the shower nozzle module includes that second base member, spinneret orifice and symmetry locate the buffering air cavity and the fumarole of spinneret orifice both sides, and buffering air cavity one side lower extreme and the air inlet intercommunication of fumarole, the relative spinneret orifice of fumarole is the angle slope setting of predetermineeing.

The inventors have found that when the above nozzle structure is used to jet-spin a solution, the fineness of the spun filament is insufficient and a desired spider web structure is not produced, resulting in poor performance and uniformity of the filaments.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the not enough of prior art existence, provide a functional type spouts a device for flash distillation method spinning.

The utility model provides an above-mentioned technical problem's technical scheme as follows: the utility model provides a flash distillation method spinning is with functional spinneret device, is including solution supply block, combination formula decompression chamber and the spinneret assembly that sets gradually, feed liquor hole has been seted up to the solution supply block, combination formula decompression chamber includes two sections at least decompression chambers, the solution passageway has all been seted up in the decompression chamber, the spinneret assembly includes the spinneret piece, set up out the silk hole in the spinneret piece, feed liquor hole and solution passageway intercommunication have the pressure relief vent, the solution passageway with go out the silk hole between the intercommunication have the spinneret hole, the internal diameter of pressure relief vent and spinneret hole is less than the internal diameter of feed liquor hole and silk hole respectively.

The beneficial effect who adopts above-mentioned scheme is: the solution supply block and the liquid inlet hole are arranged, the melted solution is conveniently discharged into the decompression cabin, the decompression hole is communicated between the solution channel and the liquid inlet hole, the decompression hole is communicated between the solution channel and the filament outlet hole, when the solution enters the solution channel from the liquid inlet hole through the decompression hole, the solution is separated to a certain degree due to the decompression effect, then the solution enters the filament outlet hole through the spinneret hole, the pressure at the filament outlet hole is close to the normal pressure, further flash evaporation separation of the solution is generated in the filament outlet hole, and therefore the ideal three-dimensional filament bundle with a cobweb structure is obtained, the performance of the filament can be guaranteed, and the uniformity of the filament is improved.

On the basis of the technical scheme, the utility model discloses can also do as follows the improvement:

furthermore, the two decompression chambers are hermetically connected through a flange.

Furthermore, the cross section of one end of the liquid inlet hole, which is close to the pressure reducing hole, is arc-shaped.

Furthermore, a heating sheet is arranged on the outer side of the decompression chamber, which is close to the solution supply block, the heating sheet is tightly attached to the outer side of the decompression chamber, and a spring-shaped heating wire is arranged on the outer side of the decompression chamber.

Further, a pressure monitoring device is arranged in the decompression chamber close to the spinning pack.

Furthermore, a solution channel close to the spinning outlet is provided with a channel communicated with the spinning hole, the channel comprises a first channel and a second channel, the first channel is communicated with the spinning hole, the inner diameter angles of the first channel and the second channel are respectively represented as A1 and A2, and the angle ranges of A1 and A2 are 120 degrees and more than A1 and more than A2 and more than 60 degrees.

Further, the section of the filament outlet hole is in a circular truncated cone shape, one end of the filament outlet hole with the smaller inner diameter is communicated with the spinneret hole, the inner diameter angle of the filament outlet hole is represented as A3, and the angle range of A3 is more than or equal to 15 degrees and less than or equal to 25 degrees.

Further, the length of the spinneret orifice is represented by L1, the length of the filament outlet orifice is represented by L2, the diameter of the spinneret orifice is represented by D1, the diameter of the smaller end of the filament outlet orifice is represented by D2, the diameter of the larger end of the filament outlet orifice is represented by D3, the size relationship of D1, D2, D3, L1 and L2 is satisfied, D2= (4-6) D1,0.6mm ≦ D1 ≦ 12.5mm,9.5mm ≦ D3 ≦ 12.8mm,1: L1/D1 is more than or equal to 1 and less than or equal to 4:1, L2/D3 is more than or equal to 1 and L2/D2 is more than or equal to 1.

Compared with the prior art, the beneficial effects of the utility model are that:

1. according to the spinning device, the solution supply block, the combined decompression chamber and the spinning assembly are arranged, the liquid inlet hole, the solution channel and the filament outlet hole are formed, and after the solution passes through the liquid inlet hole and the solution channel and is discharged from the filament outlet hole, a relatively ideal three-dimensional cobweb-shaped structure can be formed, so that the performance of the fiber filaments can be ensured, and the uniformity of the fiber filaments can be ensured;

2. this application can heat the solution in the solution passageway through setting up heating plate and heater strip, has reduced the solution cooling back, and the problem of blowout cellosilk performance decline.

Drawings

FIG. 1 is a schematic structural diagram of a functional spinneret device for flash evaporation spinning in example 1 of the present application;

FIG. 2 is an enlarged schematic view of the structure A in FIG. 1;

FIG. 3 is a schematic view showing the structure of the protrusion adjusting hole in embodiment 2 of the present application.

In the figure, 1, a solution supply unit; 11. a solution supply block; 12. a liquid inlet hole; 2. a combined decompression chamber; 21. a first decompression chamber; 22. a second decompression chamber; 23. a solution channel; 24. a pressure relief vent; 31. a flange; 25. mounting grooves; 26. a seal ring; 4. a bump; 41. a groove; 33. a pressure monitoring device; 32. a heating plate; 34. a heating wire; 5. a spinneret assembly; 51. a wire spraying block; 52. a filament outlet hole; 53. a spinneret orifice; 6. a corridor; 65. a first corridor; 66. a second corridor; 7. an adjustment hole; 8. adjusting a knob; 98. a first pressure reducing hole; 99. and a second pressure reducing hole.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Example 1

As shown in figure 1, a functional spinneret device for flash evaporation spinning comprises a solution supply assembly 1, a combined decompression chamber 2 and a spinneret assembly 5, wherein the combined decompression chamber 2 is arranged between the solution supply assembly 1 and the spinneret assembly 5, the solution supply assembly 1 is convenient for introducing the solution into the combined decompression chamber 2, the combined decompression chamber 2 is convenient for decompressing the high-pressure solution and simultaneously can enable the solution to be preliminarily separated, and after the solution is sprayed out from the spinneret assembly 5, an ideal three-dimensional filament bundle with a cobweb structure can be formed in the spinneret assembly 5, so that the performance of the filament can be ensured and the uniformity of the filament can be improved.

As shown in fig. 1, the solution supply assembly 1 includes a solution supply block 11, a solution inlet 12 is provided in the solution supply block 11, the combined decompression chamber 2 includes two decompression chambers, the two decompression chambers are respectively a first decompression chamber 21 and a second decompression chamber 22, solution channels 23 are provided in the first decompression chamber 21 and the second decompression chamber 22, the first decompression chamber 21 is connected to the solution supply block 11, a decompression hole 24 is communicated between the solution channel 23 of the first decompression chamber 21 and the solution inlet 12, and the inner diameter of the decompression hole 24 is smaller than the inner diameters of the solution inlet 12 and the solution channel 23, so that after the solution enters the decompression hole 24 and flows into the solution channel 23 from the solution inlet 12, the solution is separated to a certain extent due to the decompression effect, and a certain foundation is laid for subsequent spinning. The cross section of one end of the liquid inlet hole 12 close to the pressure reducing hole 24 is in a circular arc shape, so that the solution can uniformly flow into the pressure reducing hole 24.

As shown in FIG. 1, the first decompression chamber 21 and the second decompression chamber 22 are connected in a sealing mode through the flange 31, the sealing performance of the first decompression chamber 21 and the second decompression chamber 22 is guaranteed, and meanwhile disassembly and maintenance of the first decompression chamber 21 and the second decompression chamber 22 are facilitated. The heating sheet 32 is arranged on the outer side of the first decompression chamber 21, the heating sheet 32 is a high-power ceramic heating sheet 32, the heating sheet 32 is tightly attached to the outer side of the first decompression chamber 21, and therefore the heating sheet 32 can provide heat for flash evaporation of the solution. The decompression chamber is provided with a spring-shaped heating wire 34 on the outer side, the heating wire 34 is wound on the outer side of the second decompression chamber 22, the heating wire 34 can further heat the solution, and meanwhile, the heating wire 34 is convenient to remove from the outer side of the second decompression chamber 22.

As shown in fig. 1, a mounting groove 25 is formed at a contact position of the first decompression chamber 21 and the second decompression chamber 22, a sealing ring 26 is arranged in the mounting groove 25 of the first decompression chamber 21, the end part, far away from the first decompression chamber 21, of the sealing ring 26 is contacted with the second decompression chamber 22, and the sealing ring 26 is arranged between the first decompression chamber 21 and the second decompression chamber 22, so that the sealing property between the first decompression chamber 21 and the second decompression chamber 22 can be improved, and the problem that air enters a solution flow channel can be reduced. The second decompression chamber 22 is provided with a bump 4, the first decompression chamber 21 is provided with a groove 41 matched with the bump 4, when the first decompression chamber 21 and the second decompression chamber 22 are connected together, the bump 4 of the second decompression chamber 22 is placed in the groove 41 of the first decompression chamber 21, and the bump 4 and the groove 41 are matched to facilitate installation and connection of the first decompression chamber 21 and the second decompression chamber 22.

As shown in fig. 1, the second decompression chamber 22 is provided with a pressure monitoring device 33, the pressure monitoring device 33 is used for detecting the pressure of the solution in the solution channel 23, and when the pressure is too high or too low, the pressure of the solution can be adjusted in time, so that the filaments sprayed by the filament spraying device can be kept in an optimal state.

As shown in fig. 1, the spinneret assembly 5 includes a spinneret block 51, the spinneret block 51 and the second decompression chamber 22 are integrally formed, a filament outlet 52 is formed in the spinneret block 51, a spinneret hole 53 is communicated between the solution channel 23 of the second decompression chamber 22 and the filament outlet 52, the inner diameter of the spinneret hole 53 is smaller than the inner diameters of the filament outlet 52 and the solution channel 23, after the solution enters the solution channel 23 from the decompression hole 24, the solution is subjected to decompression effect to generate a certain degree of separation, then the solution enters the filament outlet 52 through the spinneret hole 53, and the pressure at the filament outlet 52 is close to normal pressure, so that the solution generates further flash separation in the filament outlet 52, thereby obtaining an ideal three-dimensional filament bundle with a spider-web structure, and further obtaining good-performance and good-uniformity fiber filaments.

As shown in fig. 1, the inlet orifice 12 has a length to diameter ratio corresponding to the volume of the decompression chamber, corresponding to a maximum volume length to diameter ratio not exceeding 4:1, the length-diameter ratio ensures an optimum pressure reduction effect on the solution.

As shown in fig. 1 and 2, a solution channel 23 near the spinning hole 52 is provided with a channel 6 communicated with the spinning hole 53, the channel 6 comprises a channel one 65 and a channel two 66, the channel one 65 is communicated with the spinning hole 53, the inner diameter angles of the channel one 65 and the channel two 66 are respectively represented as A1 and A2, the angle ranges of the A1 and the A2 are 120 degrees and more than A1 and more than A2 and more than 60 degrees, the cross section of the spinning hole 52 is in a circular truncated cone shape, the end with the smaller inner diameter of the spinning hole 52 is communicated with the spinning hole 53, the inner diameter angle of the spinning hole 52 is represented as A3, the angle range of the A3 is 15 degrees and more than A3 and less than or equal to 25 degrees, the A1, the A2 and the A3 are arranged in the ranges, the best performance of the spun fiber can be ensured, and the communicated part of the spinning hole 52 and the spinning hole 53 is a non-round end surface, and the connection mode can greatly reduce the phenomenon of 'dripping' in the spinning process.

As shown in fig. 1 and 2, the length of the spinneret hole 53 is represented by L1, the length of the filament outlet hole 52 is represented by L2, the diameter of the spinneret hole 53 is represented by D1, the diameter of the smaller end of the filament outlet hole 52 is represented by D2, the diameter of the larger end of the filament outlet hole 52 is represented by D3, the size relationship of D1, D2, D3, L1 and L2 is satisfied, D2= (4-6) D1,0.6mm ≦ D1 ≦ 12.5mm,9.5mm ≦ D3 ≦ 12.8mm,1: L1/D1 is more than or equal to 1 and less than or equal to 4: L2/D2 is more than or equal to 1,L 2/D3 and less than or equal to 1, and when the size relation of D1, D2, D3, L1 and L2 meets the proportion, the performance and uniformity of the fiber yarns sprayed by the spinning device can be further improved.

Example 2

As shown in FIG. 3, the present embodiment is different from embodiment 1 in that the decompression hole 24 includes a first decompression hole 24 and a second decompression hole 24, the first decompression hole 24 is communicated with the second decompression hole 24 through an adjusting hole 7, an adjusting knob 8 is screwed on the outer side of the first decompression chamber 21, the lower end of the adjusting knob 8 penetrates into the adjusting hole 7, and the decompression ratio of the solution is adjusted by the adjusting knob 8.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A functional type spinning device for spinning by a flash evaporation method is characterized in that: including solution supply block (11), combination formula decompression chamber (2) and spinning pack (5) that set gradually, feed liquor hole (12) have been seted up in solution supply block (11), combination formula decompression chamber (2) include two sections at least decompression chambers, solution passageway (23) have all been seted up in the decompression chamber, spinning pack (5) are including spinning block (51), silk outlet (52) have been seted up in spinning block (51), feed liquor hole (12) and solution passageway (23) intercommunication have decompression hole (24), intercommunication has spinning hole (53) between solution passageway (23) and the silk outlet (52), the internal diameter of decompression hole (24) and spinning hole (53) is less than the internal diameter of feed liquor hole (12) and silk outlet (52) respectively.

2. The functional spinneret device for the flash evaporation spinning according to claim 1, wherein: the two decompression chambers are connected in a sealing way through a flange (31).

3. The functional spinneret device for the flash evaporation spinning according to claim 1, wherein: the cross section of one end of the liquid inlet hole (12) close to the pressure reducing hole (24) is in a circular arc shape.

4. The functional spinneret device for the flash evaporation spinning according to claim 1, wherein: the decompression chamber outside that is close to solution supply block (11) is equipped with heating plate (32), heating plate (32) closely laminate in the decompression chamber outside, another the decompression chamber outside is equipped with spring-like heater strip (34).

5. The functional spinneret device for the flash evaporation spinning according to claim 1, wherein: a pressure monitoring device (33) is arranged near the decompression chamber of the spinning pack (5).

6. The functional spinneret device for the flash evaporation spinning according to claim 1, wherein: a solution channel (23) close to the spinning outlet (52) is provided with a channel (6) communicated with the spinning hole (53), the channel (6) comprises a channel I (65) and a channel II (66), the channel I (65) is communicated with the spinning hole (53), the inner diameter angles of the channel I (65) and the channel II (66) are respectively represented as A1 and A2, and the angle ranges of A1 and A2 are 120 degrees and more than A1 and more than A2 and more than 60 degrees.

7. The functional spinneret device for flash evaporation spinning according to claim 6, wherein the functional spinneret device comprises: the section of the filament outlet hole (52) is in a circular truncated cone shape, one end of the filament outlet hole (52) with a smaller inner diameter is communicated with the spinneret hole (53), the inner diameter angle of the filament outlet hole (52) is represented as A3, and the angle range of A3 is more than or equal to 15 degrees and less than or equal to A3 and less than or equal to 25 degrees.

8. The functional spinneret device for flash evaporation spinning according to claim 7, wherein the functional spinneret device comprises: the length of the spinneret orifice (53) is represented by L1, the length of the filament outlet orifice (52) is represented by L2, the diameter of the spinneret orifice (53) is represented by D1, the diameter of the smaller end of the filament outlet orifice (52) is represented by D2, the diameter of the larger end of the filament outlet orifice (52) is represented by D3, the size relationship of D1, D2, D3, L1 and L2 is satisfied, D2= (4-6) D1, D1 is greater than or equal to 0.6mm and less than or equal to 12.5mm, D3 is greater than or equal to 9.5mm and less than or equal to 12.8mm,1: L1/D1 is more than or equal to 1 and less than or equal to 4:1, L2/D3 is more than or equal to 1 and L2/D2 is less than or equal to 1.