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Spinning solvent circulating equipment and circulating method for producing polypropylene threads by dry method

A technology of spinning solvent and circulation equipment, which is applied in the spinning solvent circulation equipment and circulation field of polypropylene yarn produced by dry method, which can solve the problems that affect the solidification rate of polypropylene fiber filaments, polypropylene filaments are easy to break, and solvents cannot be vaporized, etc., to achieve Avoid the change of solvent concentration, ensure the quality of polypropylene fiber, and facilitate the effect of solvent volatilization

Active Publication Date: 2021-11-30
界首市三宝宏达制线有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the prior art, the dry spinning solvent needs to be evaporated under a certain temperature condition to act on the polypropylene fiber in gaseous form, but the temperature is too high to affect the solidification rate of the polypropylene fiber, which makes the polypropylene fiber easy to break and cannot produce longer Polypropylene fiber, the solvent cannot be vaporized when the temperature is too low

Method used

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  • Spinning solvent circulating equipment and circulating method for producing polypropylene threads by dry method
  • Spinning solvent circulating equipment and circulating method for producing polypropylene threads by dry method
  • Spinning solvent circulating equipment and circulating method for producing polypropylene threads by dry method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as Figure 1-2 As shown, a spinning solvent circulation equipment for dry production of polypropylene yarn, the spinning tunnel 1 is divided into a curing tunnel 11 and a silk discharging tunnel 12 by a sealed silk outlet mechanism 7, and the bottom of the curing tunnel 11 passes through the exhaust mechanism 3 and the air storage cylinder In communication, the air storage cylinder is communicated with the solvent supply cylinder 5 through the hot air supply pipe 41, and a communicator is arranged in the solvent supply cylinder 5, that is, the large container 511 is set in the cylinder wall 51 and the bottom end of the small container 512 is communicated through a thin tube 513, and The top is communicated with the top connecting pipe 514, and the solvent is added into the large container 511, so that the solvent liquid level in the small container 512 is flush with the solvent liquid level in the large container 511, and a heating wire is arranged in the hot air su...

Embodiment 2

[0035] Such as Figure 1-4 As shown, a spinning solvent circulation equipment for dry production of polypropylene yarn, wherein the sealing sleeve 71 is sealed and fixedly connected to the junction of the curing tunnel 11 and the silk outlet tunnel 12, and the sealing sleeve 71 is internally rotated and connected with two parallel fittings. The wire outlet wheel 72, the wire outlet wheel 72 includes a wheel shaft 721 that is rotatably connected to the sealing sleeve 71, the wheel shaft 721 is fixedly connected to the support tube 722, and two seal rings 723 are fixedly connected to the support tube 722, and the two seal rings 723 pass through the side The sealing ring 724 is connected so that there is a water flow channel between the sealing ring 724 and the supporting cylinder 722. The sealing ring 723 is provided with a through hole that runs through its two ends, and the through hole communicates with the water transfer ring 725 that is sealed and rotated on the supporting c...

Embodiment 3

[0038] Such as Figure 1-6 As shown, a spinning solvent circulation equipment for dry production of polypropylene yarn, the solidification shaft 11 and the T-shaped cylinder are connected through the pressure pipe. The cylinder 9 is connected, and the piston is slidably connected in the cylinder 9. A fixed plate 33 is arranged at the joint between the straight cylinder 31 and the support cylinder 32. When the plate 331 is in a horizontal state, the left end of the straight tube 31 is relatively sealed with the support tube 32. When the second rotating plate 332 is in a horizontal state, the right side of the support tube 32 is in a relatively sealed state with the support tube 32. The first rotating plate 331, the second The rotating plates 332 are respectively rotatably connected to the fixed plate 33 through hinges 333, and the upper part of the first rotating plate 331 is connected to the hinge 333, and the bottom of the second rotating plate 332 is connected to another hin...

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Abstract

The invention discloses spinning solvent circulating equipment for producing polypropylene threads by a dry method, and relates to the field of polypropylene thread production. The spinning solvent circulating equipment comprises a spinning channel, the spinning channel comprises a curing channel and a discharging channel which are separated by a sealed thread outlet mechanism, the curing channel communicates with a solvent supply cylinder, the solvent supply cylinder communicates with a hot air supply pipe, the other end of the hot air supply pipe communicates with an air storage cylinder, the air storage cylinder communicates with the curing channel through an exhaust mechanism, a communicating vessel is arranged in the solvent supply cylinder, the end, with the smaller diameter, of the communicating vessel communicates with the hot air supply pipe, so that internal circulation can be realized, volatile solvents are prevented from overflowing, the exhaust mechanism is adopted to exhaust part of gas in the curing channel, so that the pressure in the curing channel is reduced, the solvent is easier to volatilize, and the polypropylene fiber is easier to cure in a lower-temperature environment.

Description

technical field [0001] The invention relates to the field of polypropylene yarn production, in particular to spinning solvent circulation equipment and a circulation method for dry production of polypropylene yarn. Background technique [0002] Polypropylene fiber is spun from polypropylene fiber. Polypropylene fiber is made of propylene waste gas in petroleum refining, which is rarely used in industry. Polypropylene is made into fiber by melt spinning. The spinning method is divided into dry spinning Compared with wet spinning, dry spinning is to solidify the spun polypropylene fiber filaments in the air, wet spinning is to solidify the spun polypropylene fiber filaments in a solution, and dry spinning requires the use of spinning solvents. The molten polypropylene is solidified in the evaporated solvent after spraying out the polypropylene yarn, and the spinning quality is good, but the solvent is volatile and pollutes the environment, and the cost is high. [0003] The a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D13/02D01D5/04
CPCD01D13/02D01D5/04Y02P70/62
Inventor 张琴朱振朱文文
Owner 界首市三宝宏达制线有限公司
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