Uniform stirring device and method for color master batch for ultra-high molecular weight polyethylene

Abstract

The invention relates to the technical field of ultra-high molecular weight polyethylene fiber production and manufacturing, and particularly discloses an ultra-high molecular weight polyethylene color master batch uniform stirring device and a method thereof.The device comprises a tank body, a plurality of feeding pipelines are arranged at the top of the tank body, and a discharging pipeline is arranged at the bottom of the tank body; the stirring assembly comprises a power part arranged outside the tank body, a main shaft arranged in the tank body and driven by the power part and a stirring frame arranged on the main shaft, and the stirring frame comprises a plurality of cross rods arranged at the peripheral end of the main shaft and inclined rods elastically hinged to the ends of the cross rods; the adjusting assembly comprises a connecting rod arranged at the top of the inclined rod, a carrier plate arranged at the top of the connecting rod, and a plurality of push rods which are arranged in the tank body in a vertical sliding connection manner and push the carrier plate, and the ultra-high molecular weight polyethylene powder and the color master batch are mixed and stirred in the circumferential direction and the radial direction at the same time; and the color master batch is fully wrapped and fused by the ultra-high molecular weight polyethylene powder, so that the mixing uniformity is improved.

Description

Technical Field

[0001] This application relates to the technical field of ultra-high molecular weight polyethylene fiber production and manufacturing, and specifically discloses a color masterbatch uniform stirring device and method for ultra-high molecular weight polyethylene. Background Art

[0002] Ultra-high molecular weight polyethylene (UHMWPE) fiber is a fiber spun from polyethylene with a molecular weight ranging from 1 million to 5 million. Although the main chain structure of ultra-high molecular weight polyethylene fiber is the same as that of ordinary polyethylene fiber, its extremely high molecular weight endows it with excellent properties such as good stability, wear resistance, cut resistance, chemical corrosion resistance, high crystallinity, high waterproofness, impact resistance, and smooth surface, light weight, and softness. This makes ultra-high molecular weight polyethylene fiber have broad application prospects and become a leader among current high-performance fiber materials. For example, it is used to prepare high-performance fiber products such as bulletproof vests, puncture-proof gloves, rowing ropes, and salvage ropes.

[0003] In the manufacturing process of ultra-high molecular weight polyethylene fiber, the color masterbatch is a key functional additive, which is essentially a composite particle of highly concentrated pigment or dye and a polymer carrier. It not only provides color for the fiber but also needs to adapt to the special processing conditions and performance requirements of ultra-high molecular weight polyethylene fiber.

[0004] The color masterbatch in the ultra-high molecular weight polyethylene fiber manufacturing process is prepared by the following steps: using polyethylene resin as the main body, mixing it with organic pigment color powder and additives to prepare a colored resin mixture, then performing melt extrusion on it to make the color masterbatch, and then grinding the color masterbatch into a uniform powder to obtain the special color masterbatch for ultra-high molecular weight polyethylene spinning. After mixing the special color masterbatch for ultra-high molecular weight polyethylene spinning with ultra-high molecular weight polyethylene powder in proportion, spinning can be carried out to obtain colored ultra-high molecular weight polyethylene fiber.

[0005] Due to the extreme sensitivity of ultra-high molecular weight polyethylene (UHMWPE) fibers to pigment dispersion, agglomerated particles will become stress concentration points, leading to fiber breakage. During the mixing process of UHMWPE powder and masterbatch, uniformity directly determines the mechanical properties, color consistency, and processing stability of the fibers. Currently, there are the following difficulties in the mixing uniformity of UHMWPE powder and masterbatch: First, the masterbatch is prone to adhering to moisture in the air during transportation and feeding, and the UHMWPE powder is prone to absorbing moisture and caking. Second, the molecular chains of UHMWPE powder are extremely long, and the intermolecular forces are strong, resulting in extremely high melt viscosity and extremely poor fluidity. It is difficult to flow and disperse quickly and uniformly like ordinary polymers, and it is not easy to fully wrap and fuse the masterbatch, easily resulting in agglomeration or uneven distribution of the masterbatch. Third, during the mixing process, although high-speed rotation can improve the uniformity of the distribution of UHMWPE powder and masterbatch, excessive shear stress is prone to damage the UHMWPE molecular chains, thereby affecting the performance of the UHMWPE fiber finished product. Therefore, in view of this, the present invention provides a device and method for uniformly stirring masterbatch for UHMWPE to solve the above problems. Summary of the Invention

[0006] The object of the present invention is to solve the problem that during the mixing process of traditional UHMWPE powder and masterbatch, due to the extremely high melt viscosity and extremely poor fluidity of UHMWPE, it is not easy to fully wrap and fuse the masterbatch, easily resulting in agglomeration or uneven distribution of the masterbatch.

[0007] To achieve the above object, the basic solution of the present invention provides a device for uniformly stirring masterbatch for UHMWPE, including: A tank body, with several feeding pipes arranged at the top of the tank body and a discharging pipe arranged at the bottom of the tank body; A stirring assembly, including a power component arranged outside the tank body, a main shaft arranged inside the tank body and driven by the power component, and a stirring frame arranged on the main shaft. The stirring frame includes several cross bars arranged at the circumferential end of the main shaft and inclined bars elastically hinged to the ends of the cross bars; An adjusting assembly, including a connecting rod arranged at the top of the inclined bar, a carrier plate arranged at the top of the connecting rod, and several push rods arranged vertically and slidably connected inside the tank body and pushing the carrier plate.

[0008] The principle and effect of this basic solution are as follows: Compared with the prior art, in the present invention, when the power component drives the main shaft to rotate, so that the cross bar and the diagonal bar mix and stir the ultra-high molecular weight polyethylene powder and the masterbatch in the tank circumferentially, the push rod is also used to push the carrier plate, and the diagonal bar is rotated through the connecting rod to mix and stir the ultra-high molecular weight polyethylene powder and the masterbatch radially, so as to achieve the effect of mixing and stirring the ultra-high molecular weight polyethylene powder and the masterbatch circumferentially and radially at the same time, so that the ultra-high molecular weight polyethylene powder fully wraps and fuses the masterbatch, so as to improve the mixing uniformity, and solve the problem that in the mixing process of traditional ultra-high molecular weight polyethylene powder and masterbatch, due to the extremely high melt viscosity and extremely poor fluidity of ultra-high molecular weight polyethylene, it is not easy to fully wrap and fuse the masterbatch, and it is easy to appear the problems of masterbatch agglomeration or uneven distribution.

[0009] Furthermore, a sandwich layer is provided on the inner wall of the tank, and a heating component for heating the inside of the tank is provided in the sandwich layer. The stirring assembly further includes a spiral blade connected to the main shaft and located in the discharge pipeline, and a rotating frame located between the stirring frame and the spiral blade. By setting the heating component, the effect of heating and insulating the inside of the tank is achieved. The spiral blade is convenient for discharging the mixed material outwards, and the setting of the rotating frame is convenient for improving the mixing effect of the ultra-high molecular weight polyethylene melt.

[0010] Furthermore, there are at least two rotating frames, and elastic connecting blocks are slidably connected to the inner wall of the tank or the inner wall of the discharge pipeline at the ends of the rotating frames. A first scraping plate for scraping along the inner wall of the tank is provided between the connecting blocks. The elastic connection between the connecting block and the rotating frame causes the connecting block to be subjected to an elastic force, resulting in the first scraping plate being in close contact with the inner wall of the tank, thereby preventing the ultra-high molecular weight polyethylene melt from adhering to the inner wall of the tank.

[0011] Furthermore, the feed pipeline includes a base material pipeline for feeding ultra-high molecular weight polyethylene powder and a masterbatch pipeline for feeding masterbatch. The following are also provided in the tank: A first feeding assembly, including a rotating disk rotatably connected to the inner wall of the tank and a plurality of cloth pipelines connected between the rotating disk and the main shaft. A first material cavity communicating with the base material pipeline is formed between the inner wall of the rotating disk and the inner wall of the tank, and a plurality of cloth holes are uniformly provided at the bottom of the cloth pipeline; A second feeding assembly, including a cloth disk provided at the top inside the tank and communicating with the masterbatch pipeline, and a plurality of second scraping plates provided on the main shaft and scraping along the inner bottom of the cloth disk. A plurality of through holes are provided at the bottom of the cloth disk.

[0012] By setting the first feeding component, the ultra-high molecular weight polyethylene powder enters the rotating disk through the base material pipeline, is driven by the rotating disk to move, and at the same time flows out through the cloth pipeline and the cloth holes at the bottom of the cloth pipeline, thereby improving the uniformity of the distribution of the ultra-high molecular weight polyethylene powder along the circumferential direction and the diameter direction of the tank body when it enters the tank body; at the same time, after the masterbatch enters the cloth disk, it is scraped by the second scraper and drops along the through holes at the bottom of the cloth disk, improving the uniformity of the distribution of the masterbatch along the circumferential direction and the diameter direction of the tank body, and further improving the uniformity of the mixing of the ultra-high molecular weight polyethylene powder and the masterbatch.

[0013] Furthermore, the outer wall of the bottom of the cloth disk is provided with a concave-convex surface, and the push rod is arranged on the cloth pipeline and the top of the push rod is slidably connected with the concave-convex surface. Through this setting, when the main shaft drives the cloth pipeline to rotate, the push rod is also driven to rotate, and the push rod slides along the concave-convex surface to generate a vertical movement, thereby pushing the carrier plate, the connecting rod and the inclined rod to move. At the same time, the elastic connection between the inclined rod and the connecting rod drives the inclined rod, the connecting rod, the carrier plate and the push rod to reset.

[0014] Furthermore, the cloth pipeline includes a connecting section connected to the rotating disk and the main shaft and a cloth section arranged between the connecting sections. The cloth section is rotatably and sealingly connected to the connecting section. A number of teeth are provided on the cloth section, and a number of racks meshing with the teeth are provided on the push rod. Through the cooperation between the teeth and the racks, the up-and-down movement of the push rod also drives the cloth pipeline to reciprocally move, thereby preventing the ultra-high molecular weight polyethylene powder from accumulating in the cloth pipeline and further improving the uniformity of the mixing of the ultra-high molecular weight polyethylene powder and the masterbatch.

[0015] Furthermore, a drying component is also arranged in the cloth disk, including: A conversion seat, and a conversion cavity communicated with the bottom of the masterbatch pipeline is arranged in the conversion seat; A drying pipe, communicated with the side wall of the conversion cavity, the side wall of the drying pipe is communicated with an exhaust pipeline, and a filter screen is arranged between the exhaust pipeline and the inside of the drying pipe; A sliding rod, slidably and sealingly connected to the inner wall of the conversion cavity. One end of the sliding rod extends into the conversion cavity and is provided with a gas guiding rod. The end of the gas guiding rod is provided with a sealing plug slidably and sealingly connected to the inner wall of the drying pipe and capable of extending out of the drying pipe. The sliding rod and the gas guiding rod are both hollow inside, and a number of air inlet holes are provided on the side wall of the sliding rod, and a number of air outlet holes are provided on the side wall of the gas guiding rod. The other end of the sliding rod extends out of the drying pipe and is provided with a sliding seat; A cam disk, arranged in the cloth disk and driven to rotate by the main shaft, and the edge of the cam disk abuts against the sliding seat; A return spring, arranged between the sliding seat and the inner wall of the cloth disk.

[0016] The drying component is arranged such that the main shaft drives the cam disc to rotate, causing the cam disc to extrude the sliding seat, thereby pushing the sliding rod to move along the conversion cavity and the drying pipe. This not only enables quantitative feeding of the masterbatch, but also allows the masterbatch to be dried by the hot air in the tank before entering the tank, so as to avoid the problem that the moisture carried by the masterbatch causes the ultra-high molecular weight polyethylene powder to absorb moisture and agglomerate.

[0017] Furthermore, the cam disc is connected to the main shaft through the second scraper. The cam disc includes a first arc segment, a second arc segment, and a third arc segment with sequentially changing diameters. When the first arc segment, the second arc segment, and the third arc segment respectively contact the sliding seat, the air guide rods are respectively located inside the conversion cavity, inside the drying pipe, and outside the drying pipe. This enables the masterbatch to fall between the sealing plug and the sliding rod after passing through the masterbatch pipeline, and after being dried under the drive of the sliding rod, it falls into the cloth tray.

[0018] Based on the same inventive concept, the present invention provides a method for uniformly stirring masterbatch for ultra-high molecular weight polyethylene, including using the above-mentioned masterbatch uniform stirring device to mix and stir ultra-high molecular weight polyethylene powder and masterbatch.

[0019] Furthermore, the steps of using the above-mentioned masterbatch uniform stirring device to mix and stir ultra-high molecular weight polyethylene powder and masterbatch are as follows: Step S1, continuously introduce ultra-high molecular weight polyethylene powder and masterbatch into the tank through the feeding pipelines respectively; Step S2, drive the main shaft to rotate through the power component, so that the cross bar and the inclined bar perform circumferential mixing and stirring on the ultra-high molecular weight polyethylene powder and masterbatch in the tank. At the same time, the push rod pushes the carrier plate, and through the connecting rod, the inclined bar rotates to perform radial mixing and stirring on the ultra-high molecular weight polyethylene powder and masterbatch; Step S3, the well-stirred ultra-high molecular weight polyethylene powder and masterbatch are discharged through the discharge pipeline.

[0020] This method can achieve the effect of simultaneously performing circumferential and radial mixing and stirring on ultra-high molecular weight polyethylene powder and masterbatch, enabling the ultra-high molecular weight polyethylene powder to fully wrap and fuse with the masterbatch, so as to improve the mixing uniformity, and solve the problem that in the traditional mixing process of ultra-high molecular weight polyethylene powder and masterbatch, due to the extremely high melt viscosity and extremely poor fluidity of ultra-high molecular weight polyethylene, it is not easy to fully wrap and fuse with the masterbatch, and it is easy to have problems such as masterbatch agglomeration or uneven distribution. Description of the Drawings

[0021] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0022] Figure 1 It shows a schematic diagram of a color masterbatch uniform stirring device for ultra-high molecular weight polyethylene proposed in the embodiments of the present application; Figure 2 It shows a schematic diagram of the interior of the tank body in a color masterbatch uniform stirring device for ultra-high molecular weight polyethylene proposed in the embodiments of the present application; Figure 3 It shows Figure 2 The enlarged schematic diagram of part A in Figure 4 It shows a schematic diagram of the cooperation between the gear teeth and the rack in a color masterbatch uniform stirring device for ultra-high molecular weight polyethylene proposed in the embodiments of the present application; Figure 5 It shows a schematic diagram of the interior of the cloth distribution plate in a color masterbatch uniform stirring device for ultra-high molecular weight polyethylene proposed in the embodiments of the present application; Figure 6 It shows a schematic diagram of the cam disk in a color masterbatch uniform stirring device for ultra-high molecular weight polyethylene proposed in the embodiments of the present application; Figure 7 It shows a schematic diagram of the drying assembly in a color masterbatch uniform stirring device for ultra-high molecular weight polyethylene proposed in the embodiments of the present application. Detailed implementation manners

[0023] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following will, in conjunction with the accompanying drawings and preferred embodiments, describe in detail the specific implementation manners, structures, features, and their effects of the present invention as follows.

[0024] The reference numerals in the accompanying drawings of the specification include: tank body 1, outer layer body 101, inner layer body 102, interlayer 103, motor 2, masterbatch pipeline 3, base material pipeline 4, discharge pipeline 5, main shaft 6, cross bar 7, inclined bar 8, rotating frame 9, shaft body 10, connecting block 11, first scraper 12, spiral blade 13, cloth distributing plate 14, rotating disk 15, fixed rod 16, cloth distributing section 17, engaging teeth 1701, connecting section 18, connecting seat 19, push rod 20, spline 2001, rack 2002, second elastic member 2003, carrier plate 21, connecting rod 22, conversion seat 23, sliding rod 24, rod body 2401, gasket 2402, air inlet hole 2403, air guiding channel 2404, mating pin 25, cam disk 26, first arc section 2601, second arc section 2602, third arc section 2603, transition section 2604, second scraper 2605, exhaust pipeline 27, return spring 28, limit guide rod 29, air guiding rod 30, sealing plug 31, filter screen 32.

[0025] A masterbatch uniform stirring device for ultra-high molecular weight polyethylene, as shown in Embodiment 1 Figure 1 is as follows: It includes a tank body 1, a feed pipeline arranged at the top of the tank body 1, and a discharge pipeline 5 arranged at the bottom of the tank body 1. The feed pipeline includes a base material pipeline 4 for feeding ultra-high molecular weight polyethylene powder and a masterbatch pipeline 3 for feeding masterbatch. Among them, the base material pipeline 4 is arranged at the top of the side wall of the tank body 1, and the masterbatch pipeline 3 is arranged at the top of the tank body 1. One or more masterbatch pipelines 3 are provided according to the actual process masterbatch usage amount and are circumferentially distributed along the top of the tank body 1.

[0026] As Figure 1 and Figure 2 shown, it further includes a stirring assembly for stirring ultra-high molecular weight polyethylene powder and masterbatch. Among them, the stirring assembly includes a power member arranged outside the tank body 1, a main shaft 6 arranged inside the tank body 1 and vertically rotatably connected to the tank body 1 and driven by the power member, and stirring frames, a rotating frame 9, and spiral blades 13 vertically arranged on the main shaft 6 in sequence.

[0027] As Figure 1 Figure 2 and Figure 3As shown, the tank body 1 includes a cylindrical part, an inverted conical part provided at the bottom of the cylindrical part, and a top cover provided at the top of the cylindrical part. The power component is a motor 2, which is installed on the top cover. The output shaft of the motor 2 is coaxially connected to the main shaft 6. The wall surface of the tank body 1 includes an inner layer body 102, an outer layer body 101, and a sandwich layer 103 provided between the inner layer body 102 and the outer layer body 101. Among them, the inner layer body 102 is made of heat-conducting material, the outer layer body 101 is made of heat-insulating material, and a heating component for heating the inside of the tank body 1 is provided in the sandwich layer 103. The heating component uses high-temperature steam, which is transported through a steam pipeline and flows from bottom to top in the sandwich layer 103; so that a mixed environment of 140-160 °C is maintained inside the tank body 1, and the temperature at the bottom of the tank body 1 is higher and the temperature at the top of the tank body 1 is lower. After the ultra-high molecular weight polyethylene powder and the masterbatch enter the tank body 1, they gradually sink into a molten state during the mixing process. In another embodiment, the heating component uses electric heating elements such as electric heating wires.

[0028] Since the mixed materials in the inverted conical part of the tank body 1 are mainly in a molten state, in this embodiment, two rotating frames 9 are used, and elastic connections are provided at the ends of the rotating frames 9 with a plurality of connecting blocks 11. The upper connecting blocks 11 are slidably connected to the inner wall of the tank body 1, and the lower connecting blocks 11 are connected to the inner wall of the discharge pipeline 5 at the bottom of the tank body 1. A first scraping plate 12 for scraping along the inner wall of the tank body 1 is provided between the two connecting blocks 11. A connecting hole is provided on the end face of the connecting block 11. The end of the rotating frame 9 extends into the connecting hole through a shaft body 10, and a first elastic member, such as a spring or rubber, is filled between the end of the shaft body 10 and the bottom of the connecting hole, and the first elastic member is in a compressed state, so that the connecting block 11 is subjected to an elastic force, resulting in the first scraping plate 12 being in close contact with the inner wall of the tank body 1, thereby avoiding the adhesion of the ultra-high molecular weight polyethylene melt to the inner wall of the tank body 1. The spiral blade 13 is located in the discharge pipeline to facilitate the discharge of the mixed molten mixed materials to the outside.

[0029] As Figure 2 and Figure 3As shown in the figure, a first feeding component for controlling the feeding of ultra-high molecular weight polyethylene powder and a second feeding component for adjusting the feeding of masterbatch are provided inside the tank body 1. Among them, the first feeding component includes a rotating disk 15 rotatably connected to the inner wall of the tank body 1 and several cloth pipes connected between the rotating disk 15 and the main shaft 6. A first material chamber communicating with the base material pipe 4 is formed between the inner wall of the rotating disk 15 and the inner wall of the tank body 1. The cross-section of the rotating disk 15 is L-shaped. The top of the rotating disk 15 is rotatably and sealingly connected to the top cover of the tank body 1, and the bottom of the rotating disk 15 is rotatably and sealingly connected to the inside of the tank body 1. The rotating disk 15 and the main shaft 6 are connected and fixed through a plurality of fixing rods 16, so that the main shaft 6 drives the rotating disk 15 to rotate synchronously. A plurality of partitions are vertically arranged in the rotating disk 15, and the partitions divide the first material chamber into a plurality of cloth chambers. The bottom of each cloth chamber is respectively communicated with a cloth pipe, and an inclined diversion surface is arranged at the bottom of the cloth chamber. The cloth pipe is communicated with the lowest point of the diversion surface. The cloth pipe is obliquely arranged between the rotating disk 15 and the main shaft 6, and a plurality of cloth holes are uniformly arranged at the bottom of the cloth pipe along the axial direction. The ultra-high molecular weight polyethylene powder enters each cloth chamber through the base material pipe 4 respectively, and rotates circumferentially along the inner wall of the tank body 1 with the rotating disk 15, and at the same time enters the cloth pipe and flows out through the cloth holes at the bottom of the cloth pipe, so that the ultra-high molecular weight polyethylene powder is uniformly distributed in the tank body 1.

[0030] As Figure 5 shown in the figure, the second feeding component includes a cloth disk 14 arranged at the top inside the tank body 1 and communicated with the masterbatch pipe 3, and several second scraping plates 2605 arranged on the main shaft 6 and scraping along the inner bottom of the cloth disk 14. A plurality of through holes are arranged at the bottom of the cloth disk 14. After the masterbatch enters the cloth disk 14, it is scraped by the second scraping plates 2605 and falls along the through holes at the bottom of the cloth disk 14, improving the uniformity of the distribution of the masterbatch along the circumferential direction and the diameter direction of the tank body 1.

[0031] In this embodiment, the stirring frame includes several cross bars 7 arranged at the peripheral end of the main shaft 6 and inclined bars 8 elastically hinged to the ends of the cross bars 7. The inclined bars 8 and the ends of the cross bars 7 are connected to each other by hinging and are elastically reset by a torsion spring. An adjusting component for adjusting the rotation of the inclined bars 8 is arranged inside the tank body 1. The adjusting component includes a connecting rod 22 arranged at the top of the inclined bar 8 and fixedly connected to the inclined bar 8, a carrier plate 21 arranged at the top of the connecting rod 22 and fixedly connected to the connecting rod 22, and several push rods 20 installed on the cloth pipe through a connecting seat 19. The outer wall of the bottom of the cloth disk 14 is provided with an uneven surface. The push rods 20 are arranged on the cloth pipe and the top of the push rods 20 is slidably connected to the uneven surface. When the main shaft 6 drives the cloth pipe to rotate, it also drives the push rods 20 to rotate. The push rods 20 slide along the uneven surface to generate a vertical movement, thereby pushing the carrier plate 21, the connecting rod 22 and the inclined bar 8 to move. At the same time, the elastic connection between the inclined bar 8 and the connecting rod 22 drives the inclined bar 8, the connecting rod 22, the carrier plate 21 and the push rods 20 to reset.

[0032] As Figure 4 shown, the push rod 20 is connected to the top of the connecting seat 19 through a spline 2001 to prevent the push rod 20 from rotating. The push rod 20 is connected to the inner bottom of the connecting seat 19 through a second elastic member 2003 to further drive the push rod 20 to reset and make the top of the push rod 20 closely adhere to the surface of the concave-convex surface. The cloth pipe includes a connecting section 18 connected to the rotating disk 15 and the main shaft 6 and a cloth section 17 provided between the connecting sections 18. The top and bottom of the cloth section 17 are rotationally and sealingly connected to the connecting section 18. The cloth section 17 is rotationally connected to the connecting seat 19 and is provided with a stepped surface for cooperation to prevent axial sliding. A number of teeth 1701 are provided on the cloth section 17, and a number of racks 2002 meshing with the teeth 1701 are provided on the push rod 20. Since the cloth pipe is inclined, the teeth 1701 and the racks 2002 are also inclined. Through the cooperation between the teeth 1701 and the racks 2002, the up-and-down movement of the push rod 20 also drives the cloth pipe to reciprocally move, thereby preventing the ultra-high molecular weight polyethylene powder from accumulating in the cloth pipe and further improving the uniformity of the mixture of the ultra-high molecular weight polyethylene powder and the color masterbatch.

[0033] As Figure 5 and Figure 7As shown, a drying component is provided inside the fabric tray 14. Among them, the drying component includes a conversion seat 23 provided inside the fabric tray 14 and located below the masterbatch pipeline 3, a drying pipe provided on one side of the conversion seat 23, a sliding rod 24 provided on the other side of the conversion seat 23, and a cam disk 26 provided inside the fabric tray 14 and interconnected with the main shaft 6 through a second squeegee 2605. A conversion cavity communicated with the bottom of the masterbatch pipeline 3 through a feed hopper is provided inside the conversion seat 23; the drying pipe is communicated with the side wall of the conversion cavity, the side wall of the drying pipe is communicated with an exhaust pipeline 27, and a filter screen 32 is provided between the exhaust pipeline 27 and the inside of the drying pipe; the sliding rod 24 includes a rod body 2401 and a sealing gasket 2402 sleeved on the surface of the rod body 2401. The sliding rod 24 is slidably and sealingly connected to the inner wall of the conversion cavity and the inner wall of the drying pipe through the sealing gasket 2402. A gas guiding rod 30 is provided at the left end of the sliding rod 24 and extends into the conversion cavity. A sealing plug 31 that is slidably and sealingly connected to the inner wall of the drying pipe and can extend out of the drying pipe is provided at the end of the gas guiding rod 30. A drying cavity is formed between the sealing plug 31 and the end of the sliding rod 24. The gas guiding rod 30 is located between the drying cavities. A plurality of air inlet holes 2403 are provided on the side wall of the sliding rod 24, and a plurality of air outlet holes are provided on the side wall of the gas guiding rod 30. The inside of both the sliding rod 24 and the gas guiding rod 30 is hollow, that is, a gas guiding channel 2404 that conducts the air inlet holes 2403 and the gas guiding rod 30 is provided inside the sliding rod 24. The right end of the sliding rod 24 extends out of the drying pipe and is provided with a sliding seat. A mating pin 25 is provided at the bottom of the sliding seat. A limiting guide rod 29 is provided inside the fabric tray 14. The end of the limiting guide rod 29 extends into the sliding rod 24. A return spring 28 located between the inner wall of the fabric tray 14 and the sliding seat is provided on the limiting guide rod 29. The return spring 28 is in a compressed state, so that the mating pin 25 closely adheres to the surface of the cam disk 26.

[0034] As Figure 6As shown, the cam disk 26 includes a first arc segment 2601, a second arc segment 2602, a third arc segment 2603 with sequentially varying diameters, and a transition segment 2604 provided between the first arc segment 2601, the second arc segment 2602, and the third arc segment 2603. The diameter of the first arc segment 2601 is the largest. When the first arc segment 2601 contacts the mating pin 25 at the bottom of the slide seat, the slide seat and the sliding rod 24 are located at the rightmost end. At this time, the drying chamber is located inside the conversion chamber and below the masterbatch pipeline 3. Under the action of gravity, the masterbatch drops into the drying chamber. And at this time, the air inlet hole 2403 is blocked by the limit guide rod 29, and hot air does not enter the inside of the conversion seat 23. The diameter of the second arc segment 2602 is medium. When the second arc segment 2602 contacts the mating pin 25 at the bottom of the slide seat, the slide seat and the sliding rod 24 are located at the middle position. The sealing plug 31 is located inside the drying pipe, and the sliding rod 24 is located at the left end of the conversion chamber, so that the drying chamber is communicated with the exhaust pipeline 27. And the relative movement of the sliding rod 24 and the limit cutter bar makes the air inlet hole 2403 communicate with the air guide channel 2404, and hot air enters the drying chamber through the air guide rod 30 to dry the masterbatch. The diameter of the third arc segment 2603 is the smallest. When the third arc segment 2603 contacts the mating pin 25 at the bottom of the slide seat, the sliding rod 24 moves to the end of the drying pipe, and the masterbatch in the drying chamber is pushed into the cloth disk 14. This process can not only realize the quantitative feeding of the masterbatch, but also make the masterbatch be dried by the hot air in the tank body 1 before entering the tank body 1, so as to avoid the problem that the moisture carried by the masterbatch causes the ultra-high molecular weight polyethylene powder to absorb moisture and agglomerate.

[0035] Along the rotation direction of the cam disk 26, the bottom of the second scraper 2605 behind the third arc segment 2603 is flat, and the bottoms of the other two second scrapers 2605 are provided with brushes to prevent the masterbatch from blocking the through holes of the cloth disk 14.

[0036] Based on the same inventive concept, Embodiment 2 provides a method for uniformly stirring masterbatch for ultra-high molecular weight polyethylene, including using the masterbatch uniform stirring device of Embodiment 1 to mix and stir ultra-high molecular weight polyethylene powder and masterbatch. The specific steps are as follows: Step S1, continuously introduce ultra-high molecular weight polyethylene powder and masterbatch into the tank body 1 through the feed pipeline by using a material pump; Step S2, the motor 2 drives the main shaft 6 to rotate, and the ultra-high molecular weight polyethylene powder enters each distribution cavity through the base material pipe 4 respectively, and rotates circumferentially along the inner wall of the tank body 1 with the rotating disk 15, and at the same time enters the distribution pipe and flows out through the distribution hole at the bottom of the distribution pipe, so that the ultra-high molecular weight polyethylene powder is evenly distributed in the tank body 1; the masterbatch falls into the drying chamber under the action of gravity, and falls into the distribution plate after drying, and is scraped by the second scraper 2605, and falls along the through hole at the bottom of the distribution plate 14, thereby improving the uniformity of the masterbatch distribution along the circumferential direction and the diameter direction of the tank body 1. At the same time, the main shaft 6 enables the cross bar 7 and the inclined rod 8 to circumferentially mix and stir the ultra-high molecular weight polyethylene powder and the masterbatch in the tank body 1, and the push rod 20 slides along the concave and convex surface to produce vertical movement, thereby pushing the carrier plate 21, the connecting rod 22 and the inclined rod 8 to move, and radially mix and stir the ultra-high molecular weight polyethylene powder and the masterbatch; In step S3, the stirred ultra-high molecular weight polyethylene powder and masterbatch are discharged through the discharge pipe 5 and enter the extruder for the next step of granulation or spinning.

[0037] This embodiment adopts a continuous feeding method, and the ultra-high molecular weight polyethylene powder and the masterbatch are evenly distributed along the circumference and radial direction of the tank body 1, so that the ultra-high molecular weight polyethylene powder and the masterbatch can be fully mixed, and the ultra-high molecular weight polyethylene powder and the masterbatch can be mixed and stirred circumferentially and radially at the same time, so that the ultra-high molecular weight polyethylene powder can fully wrap and fuse the masterbatch to improve the uniformity of mixing, and solve the problem that in the traditional mixing process of ultra-high molecular weight polyethylene powder and masterbatch, due to the extremely high viscosity and poor fluidity of the ultra-high molecular weight polyethylene melt, it is difficult to fully wrap and fuse the masterbatch, and the masterbatch is prone to agglomeration or uneven distribution.

[0038] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any indirect modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A uniform stirring device for masterbatch for ultra-high molecular weight polyethylene, characterized in that: include: The tank body has a plurality of feed pipes on the top and a discharge pipe on the bottom; The stirring assembly comprises a power member arranged outside the tank body, a main shaft arranged inside the tank body and driven by the power member, and a stirring frame arranged on the main shaft, wherein the stirring frame comprises a plurality of cross bars arranged at the peripheral ends of the main shaft and an inclined rod elastically hinged to the ends of the cross bars; The adjusting assembly comprises a connecting rod arranged at the top of the inclined rod, a carrier plate arranged at the top of the connecting rod and a plurality of push rods which are vertically slidably connected in the tank body and push the carrier plate.

2. The device for uniformly stirring masterbatch for ultra-high molecular weight polyethylene according to claim 1, characterized in that: The inner wall of the tank body is provided with an interlayer, and a heating element for heating the inside of the tank body is provided in the interlayer. The stirring assembly also includes a spiral blade connected to the main shaft and located in the discharge pipe, and a rotating frame located between the stirring frame and the spiral blade.

3. The uniform stirring device for masterbatch for ultra-high molecular weight polyethylene according to claim 2, characterized in that: There are at least two rotating racks, and the ends of the rotating racks are elastically connected to connecting blocks that are slidably connected along the inner wall of the tank body or the inner wall of the discharge pipe, and a first scraper that scrapes along the inner wall of the tank body is provided between the connecting blocks.

4. The device for uniformly stirring masterbatch for ultra-high molecular weight polyethylene according to claim 1, characterized in that: The feed pipeline includes a base material pipeline for feeding ultra-high molecular weight polyethylene powder and a masterbatch pipeline for feeding masterbatch. The tank body is also provided with: The first feeding assembly includes a rotating disk rotatably connected to the inner wall of the tank body and a plurality of material distribution pipes connected between the rotating disk and the main shaft, a first material cavity connected to the base material pipe is formed between the inner wall of the rotating disk and the inner wall of the tank body, and a plurality of material distribution holes are evenly arranged at the bottom of the material distribution pipe; The second feeding assembly includes a distribution plate arranged at the top of the tank body and connected to the masterbatch pipeline and a plurality of second scrapers arranged on the main shaft and scraping along the bottom of the distribution plate. The bottom of the distribution plate is provided with a plurality of through holes.

5. The device for uniformly stirring masterbatch for ultra-high molecular weight polyethylene according to claim 4, characterized in that: The outer wall of the bottom of the material distribution plate is provided with a concave-convex surface, and the push rod is arranged on the material distribution pipe and is slidably connected with the top of the push rod and the concave-convex surface.

6. A uniform stirring device for masterbatch for ultra-high molecular weight polyethylene according to claim 4 or 5, characterized in that: The material distribution pipeline includes a connecting section connected to the rotating disk and the main shaft and a material distribution section arranged between the connecting sections. The material distribution section is rotatably sealed with the connecting section. The material distribution section is provided with a plurality of latch teeth, and the push rod is provided with a plurality of racks meshing with the latch teeth.

7. The device for uniformly stirring masterbatch for ultra-high molecular weight polyethylene according to claim 4, characterized in that: The cloth tray is also provided with a drying component, including: A conversion seat, wherein a conversion cavity connected to the bottom of the masterbatch pipeline is provided in the conversion seat; A drying pipe is connected to the side wall of the conversion chamber, the side wall of the drying pipe is connected to the exhaust pipe, and a filter is provided between the exhaust pipe and the inside of the drying pipe; A sliding rod is slidably and sealedly connected with the inner wall of the conversion chamber, one end of the sliding rod extends into the conversion chamber and is provided with an air guide rod, the end of the air guide rod is provided with a sealing plug which is slidably and sealedly connected with the inner wall of the drying tube and can extend out of the drying tube, the sliding rod and the air guide rod are both hollow inside, and the side wall of the sliding rod is provided with a plurality of air inlet holes, the side wall of the air guide rod is provided with a plurality of air outlet holes, and the other end of the sliding rod extends out of the drying tube and is provided with a sliding seat; A cam plate is arranged in the material dispensing plate and driven to rotate by the main shaft, and the edge of the cam plate abuts against the slide seat; The return spring is arranged between the slide seat and the inner wall of the cloth plate.

8. The device for uniformly stirring masterbatch for ultra-high molecular weight polyethylene according to claim 7, characterized in that: The cam plate is connected to the main shaft via the second scraper, and the cam plate includes a first arc segment, a second arc segment, and a third arc segment whose diameters change successively. When the first arc segment, the second arc segment, and the third arc segment are in contact with the slide seat respectively, the air guide rod is located inside the conversion chamber, inside the drying tube, and outside the drying tube respectively.

9. A method for uniformly stirring masterbatch for ultra-high molecular weight polyethylene, characterized in that: The method comprises using the masterbatch uniform stirring device described in any one of claims 1 to 8 to mix and stir the ultra-high molecular weight polyethylene powder and the masterbatch.

10. The method for uniformly stirring masterbatch for ultra-high molecular weight polyethylene according to claim 9, characterized in that: The steps of mixing and stirring the ultra-high molecular weight polyethylene powder and the masterbatch using the masterbatch uniform stirring device described in any one of claims 1 to 8 are as follows: Step S1, continuously introducing ultra-high molecular weight polyethylene powder and masterbatch into the tank through the feed pipe respectively; Step S2, the main shaft is driven to rotate by the power member, so that the cross bar and the inclined rod circumferentially mix and stir the ultra-high molecular weight polyethylene powder and the masterbatch in the tank body, and at the same time, the push rod pushes the carrier plate, and the inclined rod is rotated by the connecting rod to mix and stir the ultra-high molecular weight polyethylene powder and the masterbatch radially; Step S3, the stirred ultra-high molecular weight polyethylene powder and masterbatch are discharged through a discharge pipe.

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