A flexible polymerization apparatus and process for direct melt spinning of polyesters

Abstract

The application discloses a flexible polymerization equipment and process for polyester melt direct spinning, which belongs to the technical field of large-capacity polyester melt direct spinning technology.The equipment comprises a mixing cavity, the front end of the mixing cavity is fixedly connected with a feeding pipe, the rear end of the mixing cavity is fixedly connected with two discharge pipes respectively, the rear side of the mixing cavity is provided with a three-way pipe, the front end of the three-way pipe is rotatably connected with a rotating pipe, the front end of the rotating pipe is provided with a butt joint pushing assembly, the butt joint pushing assembly is switched and butt jointed with the two discharge pipes through the rotating pipe, the rotating pipe is rotatable, the butt joint pushing assembly is switched and butt jointed with the two discharge pipes for discharging, different polyester melt conveying can be realized at the same time, the residual material in the rotating pipe and the discharge pipe can be cleaned in the switching process, different valve ports are switched for discharging through a valve port switching assembly, different polyester melt switching and discharging are realized in cooperation, and the polyester melt switching and discharging can not affect each other.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of large-capacity polyester melt direct spinning, in particular to a flexible polymerization equipment and process for polyester melt direct spinning. BACKGROUND

[0002] In recent years, large-capacity polyester melt direct spinning technology has gradually matured, especially around 2002, with the localization of polyester technology, a batch of private enterprises began to enter the polyester industry, which provided market power for the acceleration of large-capacity polyester melt direct spinning technology in China.

[0003] According to statistics, by 2012, the proportion of private enterprises in the polyester industry had reached about 90%, making the polyester industry one of the most market-oriented industries in China. On the one hand, the privatization of the polyester industry has enhanced market vitality, improved operational efficiency, and promoted product innovation and cost reduction; on the other hand, it has also put forward higher design requirements for polyester melt direct spinning technology, especially for flexible technology of large-capacity direct spinning polyester filament and staple fiber that can quickly adjust products to meet the rapid changes in the market.

[0004] Flexible technology of direct spinning polyester filament and staple fiber includes direct online addition technology on melt delivery or distribution pipeline and "one head and two tails" technology of polymerization device, which can produce large bright, semi-dull and other melts or chips at the same time, effectively solving the contradiction between large capacity and flexibility, differentiation. However, although the "one head and two tails" technology solves the contradiction between large capacity and differentiation of the polymerization device, it cannot make the same spinning production line switch between different varieties (such as large bright, semi-dull) according to market changes. The flexible design of direct spinning melt delivery and distribution system is a process technology that considers the same spinning production line can switch between different spinning varieties according to market changes.

[0005] Based on this, the present application designs a flexible polymerization equipment and process for polyester melt direct spinning to solve the problem that the same spinning production line cannot switch between different varieties according to market changes. SUMMARY

[0006] The present application aims to provide a flexible polymerization equipment and process for polyester melt direct spinning to solve the problem raised in the background technology.

[0007] In order to achieve the above object, the present application provides the following technical scheme: a flexible polyester direct melt spinning polymerization equipment, comprising a mixing cavity, the front end of the mixing cavity is fixedly connected with a feeding pipe, the rear end of the mixing cavity is fixedly connected with two discharge pipes respectively, the rear side of the mixing cavity is provided with a three-way pipe, the front end of the three-way pipe is rotatably connected with a rotating pipe, the front end of the rotating pipe is provided with a docking push material assembly, the docking push material assembly is rotatably switched with the two discharge pipes through the rotating pipe, the docking push material assembly can push the excess material accumulated in the discharge pipe back to the inside of the mixing cavity, a valve port switching assembly is arranged on the three-way pipe, the valve port switching assembly is used for controlling the opening and closing of the valve port on the three-way pipe, and a heating plate is embedded in the inside of the discharge pipe.

[0008] As a further scheme of the present application, the docking push material assembly comprises a third sealing block, the rear end of the discharge pipe is fixedly connected with the third sealing block, the rear end of the third sealing block is rotatably connected with a rotating drum, the inside of the rotating drum is slidably connected with a threaded rod, the inside of the third sealing block is slidably provided with a sliding sleeve, one end of the threaded rod penetrates through the third sealing block and is fixedly connected with the sliding sleeve, the inside of the third sealing block is slidably connected with a second baffle, the inside of the second baffle is slidably connected with a sliding block, one end of the second baffle is fixedly connected with a limiting plate, the front end of the rotating pipe is fixedly connected with a sealing sleeve, the inside of the sealing sleeve is slidably connected with a third baffle, one end of the third baffle is fixedly connected with a protruding block, the front end of the rotating pipe is fixedly connected with a fourth sealing block, the front end of the rotating pipe is fixedly connected with a gas cylinder, the output shaft of the gas cylinder is fixedly connected with a top plate, one end of the top plate is fixedly connected with the protruding block, the third baffle and the side wall of the second baffle can be completely attached, a connecting shaft is fixedly connected to the rotating pipe, and the connecting shaft and the two rotating drums are jointly connected with a transmission belt.

[0009] As a further scheme of the present application, the valve port switching assembly comprises a connecting plate, the connecting plate is slidably arranged on the top of the three-way pipe, the rear end of the three-way pipe is fixedly connected with a fixed plate on both sides, one end of each of the two fixed plates is fixedly connected with a positioning plate, a sliding groove is formed in one side of the positioning plate, the inside of the three-way pipe is slidably connected with a first baffle on both sides, the top of the first baffle penetrates through the three-way pipe and is fixedly connected with a connecting rod, the connecting rod is slidably arranged in the inside of the sliding groove, the inside of the three-way pipe on both sides of the first baffle is fixedly connected with a sealing plate, the three-way pipe on one side of the first baffle is fixedly connected with a first sealing block, and the three-way pipe on the other side of the first baffle is fixedly connected with a second sealing block.

[0010] As a further scheme of the present application, the tee pipe top end is fixedly connected with a double-shaft motor, a fixed gear is fixedly connected on the front side output shaft of the double-shaft motor, a transmission gear capable of engaging with the fixed gear is fixedly connected on the rear end of the rotating pipe, a lead screw is fixedly connected on the rear side output shaft of the double-shaft motor, the connecting plate is screwed on the lead screw, the front end is fixedly connected with a gas feeding pipe, and the gas feeding pipe is fixedly connected with an external gas pump.

[0011] As a further scheme of the present application, the diameter of the sliding block is the same as the internal diameter of the discharge pipe, and the thickness of the sliding block is the same as the thickness of the second baffle.

[0012] As a further scheme of the present application, the rotating pipe front end is fixedly connected with a conveying pipe, and the conveying pipe is docked with an external light extinction agent pipeline.

[0013] As a further scheme of the present application, the outer wall of the second baffle can completely fit the inner wall of the third sealing block, and the inner wall of the discharge pipe is a smooth wall.

[0014] As a further scheme of the present application, the inner wall of the third baffle can completely fit the outer wall of the sealing sleeve, and the protruding block can be rotated to a position abutting against the limiting plate.

[0015] As a further scheme of the present application, a high-precision stirring paddle is arranged inside the mixing cavity, and a fixed motor for driving the high-precision stirring paddle to rotate is fixedly connected on one side of the mixing cavity.

[0016] A flexible polymerization process of polyester direct melt spinning, the process comprising the following steps:

[0017] Step one: the mixed raw materials are added into the mixing cavity through the feeding pipe, and the discharge pipe is preheated according to the required properties of the product;

[0018] Step two: the discharge pipe reaches the specified temperature, the rotating pipe is docked with the discharge pipe through the docking pusher assembly, and a specified amount of light extinction agent is added into the rotating pipe for flexible polymerization:

[0019] Step three: the corresponding valve port on the tee pipe is opened by adjusting the valve port switching assembly, and the flexible polymerization product is discharged through the opened valve port;

[0020] Step four: when switching the product, the rotating pipe is docked with another discharge pipe through the docking pusher assembly, and another valve port is opened through the valve port switching assembly, so that different products can be switched.

[0021] Compared with the prior art, the present application has the following advantages:

[0022] 1. The application adopts a rotatable rotating pipe, through the switching and connecting of the pushing assembly and the two discharge pipes, realizes the switching and discharging of different polyester melt, and can clean the residual material in the rotating pipe and the discharge pipe during the switching process, and through the switching of the valve port switching assembly, different valve ports are switched to realize the switching and discharging of different polyester melt without affecting each other. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the application;

[0024] Figure 2 It is a schematic diagram of the overall structure of the application (rear view); Figure 1 It is a schematic diagram of the overall structure of the application (rear view);

[0025] Figure 3 It is a schematic diagram of the overall structure of the application (rear view);

[0026] Figure 4 It is a schematic diagram of the overall structure of the application (rear view); Figure 3

[0027] It is an exploded structure schematic of the discharge pipe; Figure 5

[0028] Figure 6 It is a schematic diagram of the overall structure of the application (rear view);

[0029] Figure 7 It is a schematic diagram of the overall structure of the application (rear view);

[0030] Figure 8 It is a process flow chart of the application.

[0031] In the drawings, the components represented by each reference numeral are listed as follows:

[0032] 1, mixing chamber; 2, feeding pipe; 3, discharge pipe; 4, rotating pipe; 5, connecting shaft; 6, transmission belt; 7, transmission gear; 8, fixed gear; 9, double-shaft motor; 10, lead screw; 11, three-way pipe; 12, first baffle; 13, first sealing block; 14, sealing plate; 15, second sealing block; 16, connecting rod; 17, connecting plate; 18, fixed plate; 19, positioning plate; 20, sliding groove; 21, heating plate; 22, sliding sleeve; 23, sliding block; 24, second baffle; 25, limiting plate; 26, third sealing block; 27, threaded rod; 28, rotating drum; 30, air cylinder; 31, top plate; 32, fourth sealing block; 33, sealing sleeve; 34, third baffle; 35, protrusion. DETAILED DESCRIPTION

[0033] Please refer to Figures 1-8 ​The application provides a technical scheme: a flexible polyester direct spinning melt polymerization equipment, which comprises a mixing cavity 1, a feeding pipe 2 fixedly connected to the front end of the mixing cavity 1, two discharge pipes 3 fixedly connected to the rear end of the mixing cavity 1 respectively, a tee pipe 11 arranged on the rear side of the mixing cavity 1, a rotating pipe 4 rotatably connected to the front end of the tee pipe 11, a butt joint material pushing assembly arranged at the front end of the rotating pipe 4, the butt joint material pushing assembly being capable of pushing the excess material accumulated in the discharge pipe 3 back to the inside of the mixing cavity 1 by rotating switching through the rotating pipe 4, a valve port switching assembly arranged on the tee pipe 11 and used for controlling the opening and closing of the valve port on the tee pipe 11, and a heating plate 21 embedded in the inside of the discharge pipe 3.

[0034] When the above scheme is actually used, the mixed raw materials are added to the inside of the mixing cavity 1 through the feeding pipe 2, the discharge pipe 3 is preheated according to the required properties of the product, the rotating pipe 4 is butted and connected to the discharge pipe 3 through the butt joint material pushing assembly when the discharge pipe 3 reaches the specified temperature, a specified amount of light extinction agent is added to the inside of the rotating pipe 4 for flexible polymerization, the corresponding valve port on the tee pipe 11 is opened through the valve port switching assembly, the flexible polymerization product is discharged through the opened valve port, when the product is switched, the rotating pipe 4 is butted and connected to another discharge pipe 3 through the butt joint material pushing assembly, another valve port is opened through the valve port switching assembly, and the appropriate light extinction agent is added to the inside of the rotating pipe 4, so that different products can be switched, and the advantage of the scheme is that the butt joint material pushing assembly can not only butt and connect the different discharge pipes 3 at the rear end of the mixing cavity 1 to convey the materials, but also push the excess materials in the inside after switching, so that the excess materials in the inside of the discharge pipe 3 and the rotating pipe 4 can be cleaned after the rotating pipe 4 is butted and connected to the different discharge pipes 3, and different light extinction agent dosages are added to the inside of the rotating pipe 4, so that different melt outputs can be realized.

[0035] As a further embodiment of the present invention, the docking and pushing assembly includes a third sealing block 26. The rear end of the discharge pipe 3 is fixedly connected to the third sealing block 26. The rear end of the third sealing block 26 is rotatably connected to a rotating cylinder 28. A threaded rod 27 is slidably connected inside the rotating cylinder 28. A sliding sleeve 22 is slidably disposed inside the third sealing block 26. One end of the threaded rod 27 passes through the third sealing block 26 and is fixedly connected to the sliding sleeve 22. A second baffle 24 is slidably connected inside the third sealing block 26. A slider 23 is slidably connected inside the second baffle 24. A limit plate 2 is fixedly connected to one end of the second baffle 24. 5. A sealing sleeve 33 is fixedly connected to the front end of the rotating tube 4. A third baffle 34 is slidably connected inside the sealing sleeve 33. A protrusion 35 is fixedly connected to one end of the third baffle 34. A fourth sealing block 32 is fixedly connected to the front end of the rotating tube 4. A cylinder 30 is fixedly connected to the front end of the rotating tube 4. A top plate 31 is fixedly connected to the output shaft of the cylinder 30. One end of the top plate 31 is fixedly connected to the protrusion 35. The third baffle 34 can completely fit against the side wall of the second baffle 24. A connecting shaft 5 is fixedly connected to the rotating tube 4. The connecting shaft 5 and the two rotating drums 28 are connected together to a transmission belt 6.

[0036] When the above solution is put into practical use, such as Figures 5-7 As shown, the discharge pipe 3 is first heated by the heating plate 21. When the rotating pipe 4 is rotated to connect with the discharge pipe 3 on one side, the protrusion 35 at the front end of the rotating pipe 4 will rotate to the inside of the second baffle 24 and the limiting plate 25. At this time, the rotating pipe 4 and the discharge pipe 3 are completely connected. The starting cylinder 30 drives the third baffle 34 to slide open the front port of the rotating pipe 4. Since the protrusion 35 is inside the limiting plate 25, the sliding of the third baffle 34 will also drive the second baffle 24 to slide open from the rear port of the discharge pipe 3. At this time, the third sealing block 26 at the rear end of the discharge pipe 3 and the sealing sleeve 33 at the front end of the rotating pipe 4 are tightly attached to form a sealed and complete channel, so that the raw material inside the mixing chamber 1 can be passed into the rotating pipe 4. At this time, the matting agent can be added into the rotating pipe 4. The melt conveyed by the rotating pipe 4 enters the three-way pipe 11 and flows out through the valve port opened by the valve port switching component.

[0037] When switching between different melt conveyors is required, stop the raw material conveying, preheat the other set of discharge pipes 3 at the rear end of the mixing chamber 1, start the cylinder 30 to drive the third baffle 34 and the second baffle 24 to reset, close the discharge pipe 3 and the rotating pipe 4, and then rotate the rotating pipe 4 to connect with the other set of discharge pipes 3. The connection steps are the same as the steps above. At this time, during the rotation of the rotating pipe 4, if... Figure 1As shown, the connecting shaft 5 at the front end of the rotating pipe 4 drives the rotating drum 28 through the transmission belt 6, the rotating drum 28 drives the threaded rod 27 to rotate, the threaded rod 27 pushes the sliding sleeve 22 to slide to the front side of the discharge pipe 3 along the spiral connection of the third sealing block 26, at this time, one side of the sliding block 23 is clamped in the inside of the sliding sleeve 22, so the sliding block 23 will slide together with the sliding sleeve 22, and the remaining material in the discharge pipe 3 can be pushed back to the inside of the mixing cavity 1 through the sliding block 23, the purpose of which is to avoid that the excess material is left in the discharge pipe 3, so that if the last material is transported through another group of discharge pipes 3, all the materials in the mixing cavity 1 can be transported, and the material cannot be left in the discharge pipe 3 and cannot be transported, when the rotating pipe 4 rotates, the gas pump is started, because the front end of the rotating pipe 4 is sealed by the third baffle 34, under the action of the gas pressure, the remaining material in the rotating pipe 4 is squeezed into the three-way pipe 11 and finally discharged through the open valve port, when the rotating pipe 4 rotates to be connected with another group of discharge pipes 3, the third baffle 34 and the second baffle 24 are opened again by starting the gas cylinder 30, different amounts of light extinction agent can be added in the rotating pipe 4 to produce different polyester melts, another group of valve ports are switched by the valve port switching assembly to open and transport the melts, when the discharge pipe 3 is switched again and the rotating pipe 4 is rotated, the rotating direction of the rotating pipe 4 is opposite to the last time, the threaded rod 27 is reversed by the connecting shaft 5 and the transmission belt 6, the sliding sleeve 22 and the sliding block 23 can slide back to the initial position, that is, the sliding block 23 is embedded in the inside of the second baffle 24, and then the second baffle 24 is pulled outwards to pull the sliding block 23 out of the inside of the third sealing block 26.

[0038] As a further scheme of the present application, the valve port switching assembly comprises a connecting plate 17 which is slidingly arranged at the top of the three-way pipe 11, two fixed plates 18 are fixedly connected to the two sides of the rear end of the three-way pipe 11, a positioning plate 19 is fixedly connected to one end of each of the two fixed plates 18, a sliding groove 20 is formed in one side of the positioning plate 19, a first baffle 12 is slidingly connected to the inside of the three-way pipe 11 on the two sides of the three-way pipe 11, a connecting rod 16 is fixedly connected to the top of the first baffle 12 and penetrates through the three-way pipe 11, the connecting rod 16 is slidingly arranged in the inside of the sliding groove 20, a sealing plate 14 is fixedly connected to the inside of the three-way pipe 11 on the two sides of the first baffle 12, a first sealing block 13 is fixedly connected to the three-way pipe 11 on one side of the first baffle 12, and a second sealing block 15 is fixedly connected to the three-way pipe 11 on the other side of the first baffle 12.

[0039] The above scheme is put into practical use, as shown in the rotating pipe 4, at this time two first baffle 12 in different state, located in the high first baffle 12 at this time control valve port is in the open state, located in the low first baffle 12 at this time control valve port is in the closed state, in the valve port of three way pipe 11 rear end switching open and close, push the connecting plate 17 sliding, connecting plate 17 through the fixed plate 18 pull positioning plate 19 sliding, positioning plate 19 horizontal forward sliding, make the connecting rod 16 from the notch of the front end of the sliding groove 20 slip out, and the other side of the connecting rod 16 will along the sliding groove 20 sliding, when one side of the positioning plate 19 sliding to with the first baffle 12 inclined side wall contact and push the first baffle 12 to the three way pipe 11 inside sliding, the other side of the positioning plate 19 sliding to the connecting rod 16 with the inclined section of the sliding groove 20 contact, and pull the first baffle 12 up sliding, at this time two first baffle 12 complete state switching, with the stretching of connecting plate 17 make one side of the first baffle 12 from open to closed, the other side of the first baffle 12 from closed to open, to complete the switching of the valve port, when need to switch valve port again, push the connecting plate 17 sliding back to switch valve port again, the advantage of this is, in the process of valve port switching, also is the process of rotating pipe 4 rotating, at this time the rotating pipe 4 inside still have excess material need to pass through the original valve port discharge, also means that before the excess material is discharged, the valve port cannot be switched, and through the pushing of connecting plate 17 only in the latter half of the valve port switching, the former half only the sliding of positioning plate 19, the opening and closing of the valve port has not changed, after the excess material is completely extruded, the valve port will complete the switching.

[0040] As a further scheme of the application, the three-way pipe 11 top end fixedly connected with double shaft motor 9, the front side output shaft of the double shaft motor 9 is fixedly connected with fixed gear 8, the rear end of the rotating pipe 4 is fixedly connected with transmission gear 7 capable of meshing with fixed gear 8, the rear side output shaft of the double shaft motor 9 is fixedly connected with lead screw 10, the connecting plate 17 is spirally sleeved on the lead screw 10, the front end of the rotating pipe 4 is fixedly butt jointed with gas delivery pipeline, the gas delivery pipeline is fixedly connected with external air pump;

[0041] The above scheme is put into practical use, as shown in the rotating pipe 4, at this time two first baffle 12 in different state, located in the high first baffle 12 at this time control valve port is in the open state, located in the low first baffle 12 at this time control valve port is in the closed state, in the valve port of three way pipe 11 rear end switching open and close, push the connecting plate 17 sliding, connecting plate 17 through the fixed plate 18 pull positioning plate 19 sliding, positioning plate 19 horizontal forward sliding, make the connecting rod 16 from the notch of the front end of the sliding groove 20 slip out, and the other side of the connecting rod 16 will along the sliding groove 20 sliding, when one side of the positioning plate 19 sliding to with the first baffle 12 inclined side wall contact and push the first baffle 12 to the three way pipe 11 inside sliding, the other side of the positioning plate 19 sliding to the connecting rod 16 with the inclined section of the sliding groove 20 contact, and pull the first baffle 12 up sliding, at this time two first baffle 12 complete state switching, with the stretching of connecting plate 17 make one side of the first baffle 12 from open to closed, the other side of the first baffle 12 from closed to open, to complete the switching of the valve port, when need to switch valve port again, push the connecting plate 17 sliding back to switch valve port again, the advantage of this is, in the process of valve port switching, also is the process of rotating pipe 4 rotating, at this time the rotating pipe 4 inside still have excess material need to pass through the original valve port discharge, also means that before the excess material is discharged, the valve port cannot be switched, and through the pushing of connecting plate 17 only in the latter half of the valve port switching, the former half only the sliding of positioning plate 19, the opening and closing of the valve port has not changed, after the excess material is completely extruded, the valve port will complete the switching. Figure 1 As a further scheme of the application, the three-way pipe 11 top end fixedly connected with double shaft motor 9, the front side output shaft of the double shaft motor 9 is fixedly connected with fixed gear 8, the rear end of the rotating pipe 4 is fixedly connected with transmission gear 7 capable of meshing with fixed gear 8, the rear side output shaft of the double shaft motor 9 is fixedly connected with lead screw 10, the connecting plate 17 is spirally sleeved on the lead screw 10, the front end of the rotating pipe 4 is fixedly butt jointed with gas delivery pipeline, the gas delivery pipeline is fixedly connected with external air pump;

[0042] As a further scheme of the application, the three-way pipe 11 top end fixedly connected with double shaft motor 9, the front side output shaft of the double shaft motor 9 is fixedly connected with fixed gear 8, the rear end of the rotating pipe 4 is fixedly connected with transmission gear 7 capable of meshing with fixed gear 8, the rear side output shaft of the double shaft motor 9 is fixedly connected with lead screw 10, the connecting plate 17 is spirally sleeved on the lead screw 10, the front end of the rotating pipe 4 is fixedly butt jointed with gas delivery pipeline, the gas delivery pipeline is fixedly connected with external air pump;

[0043] The above scheme can completely discharge the excess material in the discharge pipe 3 when the sliding block 23 slides in the discharge pipe 3.

[0044] As a further scheme of the present application, the front end of the rotating pipe 4 is fixedly connected with a conveying pipe which is connected with an external light extinction agent pipeline;

[0045] The above scheme can control the amount of light extinction agent added to the inside of the rotating pipe 4 to switch the polyester melt between "bright" and "semi-dull" conveying.

[0046] As a further scheme of the present application, the outer wall of the second baffle 24 can be completely attached to the inner wall of the third sealing block 26, and the inner wall of the discharge pipe 3 is a smooth wall.

[0047] The above scheme can improve the sealing performance by preventing the discharge pipe 3 from having the same gap as the outside environment after the second baffle 24 is pulled out from the rear side of the discharge pipe 3.

[0048] As a further scheme of the present application, the inner wall of the third baffle 34 can be completely attached to the outer wall of the sealing sleeve 33, and the protrusion 35 can be rotated to the position attached to the limiting plate 25.

[0049] The above scheme can compensate for the gap between the third baffle 34 and the rotating pipe 4 after the third baffle 34 is pulled out, so that the third baffle 34 cannot be completely pulled out from the front end of the rotating pipe 4, and the rotating pipe 4 can still be tightly connected with the discharge pipe 3 after the third baffle 34 is pulled out.

[0050] As a further scheme of the present application, a high-precision stirring paddle is arranged in the mixing chamber 1, and a fixed motor for driving the high-precision stirring paddle to rotate is fixedly connected to one side of the mixing chamber 1.

[0051] The above scheme can continuously stir the raw materials in the mixing chamber 1 by the high-precision stirring paddle, so that the raw materials can maintain activity.

[0052] A flexible polymerization process for polyester direct spinning melt, the process comprising the following steps:

[0053] Step one: the mixed raw materials are added to the mixing chamber 1 through the feeding pipe 2, and the discharge pipe 3 is preheated according to the required properties of the product;

[0054] Step two: the discharge pipe 3 reaches the specified temperature and is connected with the rotating pipe 4 through the abutting pushing assembly, and a specified amount of light extinction agent is added to the inside of the rotating pipe 4 for flexible polymerization:

[0055] Step 3: Adjust the corresponding valve on the three-way pipe 11 to open using the valve switching assembly, and discharge the flexible polymerization product through the opened valve.

[0056] Step 4: When switching products, the rotating tube 4 is connected to another discharge tube 3 by connecting the feeding assembly, and the other valve is opened by switching the valve port switching assembly, so that different products can be produced.

[0057] Working principle: The mixed raw materials are added into the mixing chamber 1 through the feed pipe 2. The discharge pipe 3 is preheated according to the required properties of the product.

[0058] When the rotating tube 4 is rotated to connect with the discharge tube 3 on one side, the protrusion 35 at the front end of the rotating tube 4 will rotate to the inside of the second baffle 24 and the limiting plate 25. At this time, the rotating tube 4 and the discharge tube 3 are completely connected. The starting cylinder 30 drives the third baffle 34 to slide open the front port of the rotating tube 4. Since the protrusion 35 is inside the limiting plate 25, the sliding of the third baffle 34 will also drive the second baffle 24 to slide open from the rear port of the discharge tube 3. At this time, the third sealing block 26 at the rear end of the discharge tube 3 and the sealing sleeve 33 at the front end of the rotating tube 4 are tightly attached to form a sealed and complete channel, so that the raw material inside the mixing chamber 1 can be passed into the rotating tube 4. At this time, the matting agent can be added into the rotating tube 4. The melt conveyed by the rotating tube 4 enters the three-way pipe 11 and flows out through the valve port opened by the valve port switching component.

[0059] When switching between different melt conveyors is required, stop the raw material conveying, preheat the other set of discharge pipes 3 at the rear end of the mixing chamber 1, start the cylinder 30 to drive the third baffle 34 and the second baffle 24 to reset, close the discharge pipe 3 and the rotating pipe 4, and then rotate the rotating pipe 4 to connect with the other set of discharge pipes 3. The connection steps are the same as the steps above. At this time, during the rotation of the rotating pipe 4, if... Figure 1 As shown, the connecting shaft 5 at the front end of the rotating tube 4 drives the rotating drum 28 to rotate via the transmission belt 6. The rotating drum 28 drives the threaded rod 27 to rotate together. The threaded rod 27 pushes the sliding sleeve 22 to slide towards the front of the discharge tube 3 along the spiral connection of the third sealing block 26. At this time, the slider 23 is clamped inside the sliding sleeve 22 on one side, so the slider 23 will slide together with the sliding sleeve 22. The remaining material inside the discharge tube 3 can be pushed back into the mixing chamber 1 through the slider 23. The purpose of this is to avoid excess material remaining inside the discharge tube 3.

Claims

1. A flexible polymerization equipment for direct-spun polyester melt, comprising a mixing chamber (1), wherein a feed pipe (2) is fixedly connected to the front end of the mixing chamber (1), and two discharge pipes (3) are fixedly connected to the rear end of the mixing chamber (1), and a three-way pipe (11) is provided on the rear side of the mixing chamber (1), wherein a rotating pipe (4) is rotatably connected to the front end of the three-way pipe (11), characterized in that: The front end of the rotating pipe (4) is provided with a docking and pushing assembly which is switched and docked with two discharge pipes (3) through the rotating pipe (4), the docking and pushing assembly can push the excess material accumulated in the discharge pipe (3) back to the inside of the mixing cavity (1), the three-way pipe (11) is provided with a valve port switching assembly for controlling the opening and closing of the valve port on the three-way pipe (11), and the inside of the discharge pipe (3) is embedded with a heating plate (21); The docking and pushing assembly comprises a third sealing block (26), the rear end of the discharge pipe (3) is fixedly connected with the third sealing block (26), the rear end of the third sealing block (26) is rotatably connected with a rotating cylinder (28), the inside of the rotating cylinder (28) is slidably connected with a threaded rod (27), the inside of the third sealing block (26) is slidably provided with a sliding sleeve (22), one end of the threaded rod (27) penetrates through the third sealing block (26) and is fixedly connected with the sliding sleeve (22), the inside of the third sealing block (26) is slidably connected with a second baffle (24), the inside of the second baffle (24) is slidably connected with a sliding block (23), one end of the second baffle (24) is fixedly connected with a limiting plate (25), the front end of the rotating pipe (4) is fixedly connected with a sealing sleeve (33), the inside of the sealing sleeve (33) is slidably connected with a third baffle (34), one end of the third baffle (34) is fixedly connected with a protruding block (35), the front end of the rotating pipe (4) is fixedly connected with a fourth sealing block (32), the front end of the rotating pipe (4) is fixedly connected with a gas cylinder (30), the output shaft of the gas cylinder (30) is fixedly connected with a top plate (31), one end of the top plate (31) is fixedly connected with the protruding block (35), the third baffle (34) and the side wall of the second baffle (24) can be completely attached, the rotating pipe (4) is fixedly connected with a connecting shaft (5), the connecting shaft (5) and the two rotating cylinders (28) are jointly connected with a transmission belt (6); The valve port switching assembly comprises a connecting plate (17), the connecting plate (17) is slidably arranged at the top of the three-way pipe (11), the rear end of the three-way pipe (11) is fixedly connected with a fixed plate (18) on each side, one end of each of the two fixed plates (18) is fixedly connected with a positioning plate (19), a sliding groove (20) is formed in one side of the positioning plate (19), the inside of the three-way pipe (11) is slidably connected with a first baffle (12) on each side, the top of the first baffle (12) penetrates through the three-way pipe (11) and is fixedly connected with a connecting rod (16), the top of the connecting rod (16) is slidably arranged in the inside of the sliding groove (20), the inside of the three-way pipe (11) on the two sides of the first baffle (12) is fixedly connected with a sealing plate (14), the three-way pipe (11) on one side of the first baffle (12) is fixedly connected with a first sealing block (13), and the three-way pipe (11) on the other side of the first baffle (12) is fixedly connected with a second sealing block (15).

2. A flexible polymeric assembly for direct melt spinning of a polyester according to claim 1, characterized in that: The tee pipe (11) top end fixed connection has double shaft motor (9), the double shaft motor (9) front side output shaft fixed connection has fixed gear (8), the rotating pipe (4) rear end fixed connection has the transmission gear (7) that can engage with fixed gear (8), the double shaft motor (9) rear side output shaft fixed connection has lead screw (10), the connecting plate (17) screw sleeve is connected on lead screw (10), the (4) front end fixed butt joint has gas pipeline, the gas pipeline is fixedly connected with external air pump.

3. A flexible polymeric assembly for direct melt spinning of a polyester according to claim 1, characterized in that: The diameter of the sliding block (23) is the same as the inner diameter of the discharge pipe (3), and the thickness of the sliding block (23) is the same as the thickness of the second baffle (24).

4. A flexible polymeric assembly for direct melt spinning of a polyester according to claim 1, characterized in that: The rotating pipe (4) front end fixed connection has conveying pipe, the conveying pipe is butt jointed with external light extinction agent pipeline.

5. A flexible polymeric assembly for direct melt spinning of a polyester according to claim 1, characterized in that: The outer wall of the second baffle (24) can be completely matched with the inner wall of the third sealing block (26), and the inner wall of the discharge pipe (3) is smooth.

6. A flexible polymeric assembly for direct melt spinning of a polyester according to claim 1, characterized in that: The inner wall of the third baffle (34) can be completely matched with the outer wall of the sealing sleeve (33), and the protrusion (35) can be rotated to the position matched with the limiting plate (25).

7. A flexible polymeric assembly for direct melt spinning of a polyester according to claim 1, wherein: The mixing cavity (1) is provided with high-precision stirring paddle, and the mixing cavity (1) is fixedly connected with a fixed motor for driving the high-precision stirring paddle to rotate.

8. A flexible polymerization process of a polyester direct melt, suitable for use in the flexible polymerization apparatus of a polyester direct melt according to any one of claims 1 to 7, characterized in that, The process comprises the following steps: Step one: the mixed raw materials are added into the mixing cavity (1) through the feeding pipe (2), and the discharge pipe (3) is preheated according to the required properties of the product; Step two: when the discharge pipe (3) reaches the specified temperature, the rotating pipe (4) is butt jointed with the discharge pipe (3) through the butt joint pushing assembly, and a specified amount of light extinction agent is added into the rotating pipe (4) for flexible polymerization; Step three: adjust the corresponding valve opening on the tee pipe (11) to open through the valve port switching assembly, and discharge the flexible polymerization product through the opened valve port; Step four: when switching the product, the rotating pipe (4) is butt jointed with another discharge pipe (3) through the butt joint pushing assembly, and another valve port is opened through the valve port switching assembly, so that different products can be switched.

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