Ultra-high molecular weight polyethylene fiber production equipment

Abstract

The utility model discloses ultra-high molecular weight polyethylene fiber production equipment. The equipment comprises a cover body and a screw extruder mounted on one side of the cover body, an inner cover box is arranged in the cover body; a flat cavity shell is fixedly mounted at a discharge hole of the screw extruder in a communicating manner; a negative-pressure air exhaust mechanism is arranged at the top of the inner cover box, the output end of the negative-pressure air exhaust mechanism is connected with a negative-pressure cover, and a bottom opening of the negative-pressure cover communicates with the top of the left side of the flat cavity shell; the bottom of the flat cavity shell is provided with a plurality of discharging conveying assemblies in a communicating mode, and spinning nozzles are installed at the bottom ends of the multiple discharging conveying assemblies. The device has the beneficial effects that the ultra-high molecular weight polyethylene in a molten state is conveyed into the flat cavity shell through the screw extruder, passes through the bottom of the negative pressure cover, and is subjected to negative pressure suction through the negative pressure suction mechanism, so that negative pressure defoaming treatment of the raw materials is realized, and the phenomenon that the raw materials have bubbles in the raw materials is avoided; therefore, the produced fibers are hollow, and the processing quality is guaranteed.

Description

Technical Field

[0001] This application relates to the field of ultra-high molecular weight polyethylene fiber production, and in particular to an ultra-high molecular weight polyethylene fiber production equipment. Background Technology

[0002] In the production and preparation process of ultra-high molecular weight polyethylene (UHMWPE) fiber, UHMWPE raw material in a molten state is extruded through a screw extruder and then sprayed out through the spinneret and spinneret holes on a spinneret to form fibers. UHMWPE fiber can be used in fields such as safety protection, aerospace, military equipment, and biomedicine.

[0003] In the processing of ultra-high molecular weight polyethylene (UHMWPE), the raw material is melted. Due to its extremely high molecular weight, high melt viscosity, and very low fluidity, air easily enters, potentially leading to air bubbles. Current UHMWPE fiber production equipment lacks a defoaming structure between the spinneret and the screw extruder, making it impossible to defoam the raw material. Without defoaming before spinning, the produced fibers may contain pores or air bubbles, affecting processing quality. Therefore, this paper proposes a new UHMWPE fiber production equipment to address these issues. Summary of the Invention

[0004] This embodiment provides an ultra-high molecular weight polyethylene fiber production device. A screw extruder continuously feeds material to the left side of a flat cavity shell. The flat design of the cavity shell flattens the raw material, reducing the liquid level, and it passes through the bottom of the negative pressure hood. A negative pressure suction mechanism then performs negative pressure defoaming treatment on the raw material, thus solving the problem of insufficient defoaming treatment of raw materials before spinning in existing technologies.

[0005] According to one aspect of this application, an ultra-high molecular weight polyethylene fiber production device is provided, including a cover and a screw extruder installed on one side of the cover; an inner cover box is provided inside the cover; a flat cavity shell is fixedly connected to the discharge port of the screw extruder; a negative pressure suction mechanism is provided at the top of the inner cover box, the output end of the negative pressure suction mechanism is connected to a negative pressure cover, and the bottom opening of the negative pressure cover is connected to the top left side of the flat cavity shell; a plurality of feeding conveying components are connected to the bottom of the flat cavity shell, and each of the plurality of feeding conveying components is equipped with a spinneret at its bottom end.

[0006] Furthermore, the negative pressure suction mechanism includes a negative pressure suction pump installed on the upper part of the inner cover box and an air pipe connected to the output end of the negative pressure suction pump, wherein the end of the air pipe away from the negative pressure suction pump is connected to the top of the negative pressure cover.

[0007] Furthermore, the feeding and conveying assembly includes a bottom tube communicating with the bottom of the flat cavity shell and a conveying screw disposed inside the bottom tube; the upper end of the conveying screw is connected to a transmission mechanism.

[0008] Furthermore, the transmission mechanism includes multiple synchronous pulleys and a synchronous belt; the synchronous belt is wound around the multiple synchronous pulleys.

[0009] Furthermore, a rotating shaft is fixedly installed in the middle of the synchronous pulley, and a carrier plate is fixedly installed inside the inner cover box. The rotating shaft and the carrier plate are rotatably mounted together.

[0010] Furthermore, a drive motor is fixedly mounted on the carrier plate, and the output shaft end of the drive motor is fixedly connected to one end of the rotating shaft.

[0011] Furthermore, one end of the rotating shaft is fixedly connected to one end of the conveying screw.

[0012] Furthermore, a pressure gauge is installed on the front of the inner casing.

[0013] Furthermore, a base is fixedly installed at the bottom of the cover.

[0014] Furthermore, multiple fixing brackets are fixedly installed on the top of the cover, and mounting holes are provided on the upper part of the fixing brackets.

[0015] The advantages of this application are: the ultra-high molecular weight polyethylene fiber production equipment proposed in this application continuously feeds material to the left side of the flat cavity shell through a screw extruder. Through the flat design of the flat cavity shell, the raw material entering the flat cavity shell is flattened according to its shape, reducing the liquid level. At the same time, it passes through the bottom of the negative pressure hood and is sucked in by the negative pressure suction mechanism, thereby achieving negative pressure defoaming treatment of the raw material.

[0016] Simultaneously, the drive motor drives a single rotating shaft to rotate, thereby causing a single synchronous pulley to rotate. In conjunction with the synchronous belt, multiple synchronous pulleys are driven, causing multiple conveying screws to rotate and convey the material downwards. The material is then ejected through the orifices on the spinneret to form fibers. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of one embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the internal structure of the cover according to one embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the transmission mechanism according to one embodiment of this application.

[0021] In the diagram: 1. Cover body; 2. Inner cover box; 3. Fixing frame; 4. Negative pressure vacuum pump; 5. Pressure gauge; 6. Screw extruder; 7. Base; 8. Air pipe; 9. Flat cavity shell; 10. Bottom pipe; 11. Spinneret; 12. Conveying screw; 13. Rotating shaft; 14. Carrier plate; 15. Drive motor; 16. Transmission mechanism; 1601. Synchronous pulley; 1602. Synchronous belt; 17. Negative pressure cover; 18. Observation window; 19. Observation port. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0023] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0024] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0025] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0026] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] Please see Figure 1-3 As shown, an ultra-high molecular weight polyethylene fiber production equipment includes a cover 1 and a screw extruder 6 installed on one side of the cover 1; an inner cover box 2 is provided inside the cover 1; a flat cavity shell 9 is fixedly connected to the discharge port of the screw extruder 6; a negative pressure suction mechanism is provided on the top of the inner cover box 2, and the output end of the negative pressure suction mechanism is connected to a negative pressure cover 17, and the bottom opening of the negative pressure cover 17 is connected to the top left side of the flat cavity shell 9; a plurality of feeding conveying components are connected to the bottom of the flat cavity shell 9, and each of the plurality of feeding conveying components is equipped with a spinneret 11 at its bottom end.

[0029] In practice, the molten ultra-high molecular weight polyethylene is transported to the flat cavity shell 9 through the screw extruder 6 to flatten it. A negative pressure suction mechanism is further set up to provide a negative pressure environment above the liquid surface through suction treatment, which realizes the function of negative pressure defoaming and avoids the hollow phenomenon in the produced fibers caused by air bubbles inside the raw material, thus ensuring the processing quality.

[0030] The negative pressure suction mechanism includes a negative pressure suction pump 4 installed on the upper part of the inner cover box 2 and an air pipe 8 connected to the output end of the negative pressure suction pump 4. The end of the air pipe 8 away from the negative pressure suction pump 4 is connected to the top of the negative pressure cover 17. Through the design of the negative pressure suction pump 4, negative pressure can be provided inside the negative pressure cover 17. The raw material passes through the bottom of the negative pressure cover 17 and can be subjected to negative pressure defoaming treatment.

[0031] The feeding and conveying assembly includes a bottom pipe 10 connected to the bottom of the flat cavity shell 9 and a conveying screw 12 disposed in the bottom pipe 10; the upper end of the conveying screw 12 is connected to a transmission mechanism 16. Since the molten ultra-high molecular weight polyethylene has extremely low fluidity, the raw material is conveyed by driving the conveying screw 12 to rotate, so that it can enter the spinneret 11 for spraying and forming fibers.

[0032] In a specific implementation, the transmission mechanism 16 includes multiple synchronous pulleys 1601 and a synchronous belt 1602; the synchronous belt 1602 is wound around the multiple synchronous pulleys 1601; a rotating shaft 13 is fixedly installed in the middle of the synchronous pulleys 1601, and a carrier plate 14 is fixedly installed inside the inner cover box 2; the rotating shaft 13 and the carrier plate 14 are rotatably installed; through the design of the transmission mechanism 16, when driving a single synchronous pulley 1601 to rotate, all synchronous pulleys 1601 can rotate synchronously together through the transmission of the synchronous belt 1602.

[0033] A drive motor 15 is fixedly mounted on the carrier plate 14. The output shaft of the drive motor 15 is fixedly connected to one end of the rotating shaft 13. The drive motor 15 provides drive for the whole and is used to drive the single synchronous pulley 1601 to rotate.

[0034] One end of the rotating shaft 13 is fixedly connected to one end of the conveying screw 12.

[0035] A pressure gauge 5 is installed on the front of the inner cover box 2. The end of the pressure gauge 5 is connected to the negative pressure cover 17. The pressure gauge 5 is used to detect the negative pressure inside the negative pressure cover 17.

[0036] A base 7 is fixedly installed at the bottom of the cover 1.

[0037] Multiple mounting brackets 3 are fixedly installed on the top of the cover 1, and mounting holes are provided on the upper part of the mounting brackets 3. The multiple mounting brackets 3 provide mounting for the top of the cover 1.

[0038] An observation window 18 is provided on one side of the flat cavity shell 9, and an observation port 19 is provided on one side of the cover body 1. The observation port 19 is aligned with the observation window 18. The design of the observation window 18 and the observation port 19 facilitates the viewing of the interior of the flat cavity shell 9.

[0039] Usage method: The ultra-high molecular weight polyethylene fiber production equipment proposed in this application continuously feeds material to the left side of the flat cavity shell 9 through the screw extruder 6. The flat design of the flat cavity shell 9 flattens the raw material entering the flat cavity shell 9, reducing the liquid level. The negative pressure pump 4 extracts air, and the negative pressure is drawn into the negative pressure hood 17 through the air pipe 8. The raw material passes through the bottom of the negative pressure hood 17, realizing the negative pressure defoaming treatment of the raw material.

[0040] At the same time, the drive motor 15 drives a single rotating shaft 13 to rotate, thereby causing a single synchronous pulley 1601 to rotate. In conjunction with the synchronous belt 1602, multiple synchronous pulleys 1601 are driven, causing multiple conveying screws 12 to rotate and convey materials downward. The materials are then ejected through the holes on the spinneret 11 to form fibers.

[0041] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An apparatus for producing an ultra-high molecular weight polyethylene fiber, comprising a housing (1) and a screw extruder (6) installed on one side of the housing (1); characterized in that: The cover body (1) is internally provided with an inner cover box (2); A flat cavity shell (9) is fixedly communicated with the discharge port of the screw extruder (6); The top of the inner cover box (2) is provided with a negative pressure air extraction mechanism, the output end of the negative pressure air extraction mechanism is connected with a negative pressure cover (17), and the bottom opening of the negative pressure cover (17) is in communication with the left top of the flat cavity shell (9); The bottom of the flat cavity shell (9) is communicated with a plurality of discharging conveying assemblies, and the bottom end of each of the plurality of discharging conveying assemblies is provided with a spinning nozzle (11).

2. The ultra-high molecular weight polyethylene fiber production apparatus according to claim 1, characterized by: The negative pressure air extraction mechanism comprises a negative pressure air extraction pump (4) mounted on the upper portion of the inner cover box (2) and an air pipe (8) connected to the output end of the negative pressure air extraction pump (4), and the end of the air pipe (8) away from the negative pressure air extraction pump (4) is in communication with the top of the negative pressure cover (17).

3. The ultra-high molecular weight polyethylene fiber production apparatus according to claim 1, characterized by: The discharging conveying assembly comprises a bottom pipe (10) in communication with the bottom of the flat cavity shell (9) and a conveying screw (12) arranged in the bottom pipe (10); the upper end of the conveying screw (12) is connected with a transmission mechanism (16).

4. The ultra-high molecular weight polyethylene fiber production apparatus according to claim 3, characterized by: The transmission mechanism (16) comprises a plurality of synchronous wheels (1601) and a synchronous belt (1602); the synchronous belt (1602) is wound on the plurality of synchronous wheels (1601).

5. The ultra-high molecular weight polyethylene fiber production apparatus according to claim 4, characterized by: The middle portion of the synchronous wheel (1601) is fixedly installed with a rotating shaft (13), the inside of the inner cover box (2) is fixedly installed with a carrier plate (14), and the rotating shaft (13) is rotatably installed with the carrier plate (14).

6. The ultra-high molecular weight polyethylene fiber production apparatus according to claim 5, characterized by: The carrier plate (14) is fixedly installed with a driving motor (15), and the output shaft end of the driving motor (15) is fixedly connected with one end of the rotating shaft (13).

7. The ultra-high molecular weight polyethylene fiber production apparatus according to claim 6, characterized by: One end of the rotating shaft (13) is fixedly connected with one end of the conveying screw (12).

8. The ultra-high molecular weight polyethylene fiber production apparatus according to claim 1, characterized by: The front of the inner cover box (2) is installed with a pressure gauge (5).

9. The ultra-high molecular weight polyethylene fiber production apparatus according to claim 1, characterized by: The bottom of the cover body (1) is fixedly installed with a base (7).

10. The ultra-high molecular weight polyethylene fiber production apparatus according to claim 1, characterized by: The top of the cover body (1) is fixedly installed with a plurality of fixing frames (3), and the upper portion of each fixing frame (3) is provided with a mounting hole. The top of the cover body (1) is fixedly installed with a plurality of fixing frames (3), and the upper portion of each fixing frame (3) is provided with a mounting hole.

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