Screw injection device for chemical fiber spinning production

Abstract

The utility model relates to the technical field of chemical fiber spinning screw injection machines, in particular to a screw injection device for chemical fiber spinning production. According to the technical scheme, the equipment comprises an equipment base, a shell is fixed to the upper end of the equipment base through a supporting column, an extrusion head is fixed to the front end of the shell, a heating area, a stirring area and an extrusion area are arranged in the shell and distributed in sequence, and a screw body is rotationally connected into the shell; a driving motor for driving the screw main body to rotate is fixed to the rear side of the shell, a group of stirring rods are rotationally connected to the part, located in the stirring area, of the inner side wall of the screw main body, and a transmission assembly is arranged between the stirring rods and the screw main body. The stirring area is arranged in the shell, after spinning fibers are easy to melt, the spinning fibers enter the stirring area, bubbles in a spinning fiber solution are quickly scattered and discharged through high-speed rotating stirring, extrusion fiber breakage caused by the bubbles is avoided, and normal spinning production and processing are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical fiber spinning screw injection machines, in particular to a screw injection device for chemical fiber spinning production. Background Art

[0002] Chemical fiber spinning is a production process of making chemical fibers by extruding a polymer solution or melt through tiny holes (spinning heads). These fibers can be synthetic fibers such as polyester (PET), nylon (PA), acrylonitrile (PAN), etc., or regenerated fibers such as viscose and acetate.

[0003] In the process of screw injection spinning, since finer fiber materials need to be extruded, if there are bubbles in the solution during the hot melt process, the bubbles will cause the spun fibers to break when they are ejected from the extruder head, and continuous spun fibers cannot be obtained. Therefore, it is necessary to set a structure in the extruder to eliminate the bubbles in the solution.

[0004] Common methods of eliminating bubbles inside solutions include stirring. Stirring can break large bubbles into small bubbles, increasing the surface area of ​​the bubbles, which helps to accelerate the dissolution of the bubbles. At the same time, stirring will continuously renew the liquid surface, help the bubbles escape from the liquid surface, and reduce the aggregation of bubbles on the liquid surface. Therefore, it is necessary to design a screw extruder with a stirring structure. Utility Model Content

[0005] The utility model aims to solve the problems existing in the background technology and proposes a screw injection device for chemical fiber spinning production.

[0006] The technical solution of the utility model: a screw injection device for chemical fiber spinning production, comprising an equipment base, an outer shell is fixed to the upper end of the equipment base through a supporting column, an extrusion head is fixed to the front end of the outer shell, a heating zone, a stirring zone and an extrusion zone are arranged in the outer shell and are distributed in sequence, a screw body is rotatably connected in the outer shell, a driving motor for driving the screw body to rotate is fixed to the rear side of the outer shell, a group of stirring rods are rotatably connected to the inner side wall of the screw body located in the stirring zone, and a transmission assembly is arranged between the stirring rods and the screw body.

[0007] Preferably, the transmission assembly includes a rotating shaft sleeve and a transmission gear. The rotating shaft sleeve is fixed on the screw body and is distributed in the stirring zone. A rotating sleeve is rotatably connected to the rotating shaft sleeve. One end of the outer side of the stirring rod is rotatably connected to the inner wall of the outer shell, and one end of the inner side of the stirring rod is rotatably connected to the outer surface of the rotating sleeve. The transmission gear is fixed on the stirring rod.

[0008] Preferably, an annular plate is fixed on the rotating shaft sleeve and located outside the rotating sleeve, and an annular tooth plate is fixed on the side of the annular plate close to the transmission gear, and the annular tooth plate is meshed with the transmission gear.

[0009] Preferably, a hydraulic sensor is installed on the extrusion head.

[0010] Preferably, a group of heating sleeves are fixed on the outside of the shell and aligned with the heating zone, a heat preservation sleeve is fixed on the outside of the shell and aligned with the stirring zone, and a filter is fixed inside the shell and between the heating zone and the stirring zone.

[0011] Preferably, a feed hopper is installed on the rear side of the upper end of the shell, and the position of the feed hopper is aligned with the position of the heating zone.

[0012] Compared with the prior art, the utility model has the following beneficial technical effects: a stirring zone is set in the outer shell, and after the spinning fiber is easily melted, it enters the stirring zone, and the bubbles in the spinning fiber solution are quickly broken up and discharged through high-speed rotation and stirring, thereby avoiding the breakage of the extruded fiber caused by the bubbles and ensuring normal spinning production and processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the side cutaway structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the connection structure between the rotating shaft sleeve and the stirring rod of the utility model;

[0015] Figure 3 For this utility model Figure 1 Enlarged structural diagram at A in the middle.

[0016] Figure numerals: 1. Equipment base; 11. Support column; 2. Outer shell; 21. Heating zone; 22. Stirring zone; 23. Extrusion zone; 24. Heating sleeve; 25. Insulation sleeve; 26. Stirring rod; 27. Filter screen; 3. Screw body; 4. Drive motor; 5. Feed hopper; 6. Extrusion head; 61. Hydraulic sensor; 7. Transmission assembly; 71. Rotating shaft sleeve; 72. Rotating sleeve; 73. Transmission gear; 74. Ring plate; 75. Ring gear plate. DETAILED DESCRIPTION

[0017] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] Example

[0019] like Figure 1-3As shown, the screw injection device for chemical fiber spinning production proposed by the utility model comprises an equipment base 1, a shell 2 is fixed to the upper end of the equipment base 1 through a support column 11, an extrusion head 6 is fixed to the front end of the shell 2, a heating zone 21, a stirring zone 22 and an extrusion zone 23 are arranged in the shell 2, and are distributed in sequence, a screw body 3 is rotatably connected in the shell 2, a driving motor 4 is fixed to the rear side of the shell 2 to drive the screw body 3 to rotate, a group of stirring rods 26 are rotatably connected to the inner side wall of the screw body 3 located in the stirring zone 22, a transmission assembly 7 is arranged between the stirring rod 26 and the screw body 3, a hydraulic sensor 61 is installed on the extrusion head 6, a group of heating sleeves 24 are fixed to the outer side of the shell 2 and aligned with the heating zone 21, a heat preservation sleeve 25 is fixed to the outer side of the shell 2 and aligned with the stirring zone 22, a filter screen 27 is fixed in the shell 2 and located between the heating zone 21 and the stirring zone 22, a feed hopper 5 is installed at the rear side of the upper end of the shell 2, and the position of the feed hopper 5 is aligned with the position of the heating zone 21.

[0020] The transmission assembly 7 includes a rotating shaft sleeve 71 and a transmission gear 73. The rotating shaft sleeve 71 is fixed on the screw body 3 and is distributed in the stirring zone 22. The rotating shaft sleeve 71 is rotatably connected to a rotating sleeve 72. One end of the outer side of the stirring rod 26 is rotatably connected to the inner wall of the outer shell 2, and one end of the inner side of the stirring rod 26 is rotatably connected to the outer surface of the rotating sleeve 72. The transmission gear 73 is fixed on the stirring rod 26. An annular plate 74 is fixed on the rotating shaft sleeve 71 and located on the outer side of the rotating sleeve 72. An annular tooth plate 75 is fixed to the side of the annular plate 74 close to the transmission gear 73, and the annular tooth plate 75 is meshed with the transmission gear 73.

[0021] In this embodiment, the entire device is first connected to an external power supply, and then the raw material is injected into the outer shell 2 through the feed hopper 5, and then the drive motor 4 is used to drive the screw body 3 to rotate, which will push the raw material into the heating zone 21 for heating and melting in turn, and then enter the stirring zone 22 for stirring to eliminate bubbles, and finally extrude it through the extrusion zone 23, so that it is extruded from the extrusion head 6 at a specified pressure to form spun fibers. In this process, the rotation of the screw body 3 will drive the rotating shaft sleeve 71 to rotate. Since the rotating sleeve 72 is rotatably connected to the rotating shaft sleeve 71, the position of the rotating sleeve 72 can be ensured to remain unchanged, and when the annular plate 74 rotates synchronously, the annular gear plate 75 and the transmission gear 73 are meshed and driven to drive the stirring rod 26 to rotate independently, so as to achieve the purpose of stirring, eliminate bubbles inside the solution, and avoid limit fractures caused by bubbles. At the same time, the filter screen 27 is used to block the particles that are not completely melted from entering the stirring zone 22, and then being extruded from the extrusion head 6 to cause blockage.

[0022] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A screw injection device for chemical fiber spinning production, comprising a device base (1), characterized in that: A housing (2) is fixed to the upper end of the equipment base (1) via a support column (11); an extrusion head (6) is fixed to the front end of the housing (2); a heating zone (21), a stirring zone (22) and an extrusion zone (23) are arranged in the housing (2) and are distributed in sequence; a screw body (3) is rotatably connected to the housing (2); a driving motor (4) for driving the screw body (3) to rotate is fixed to the rear side of the housing (2); a group of stirring rods (26) are rotatably connected to the inner side wall of the screw body (3) located in the stirring zone (22); a transmission assembly (7) is arranged between the stirring rods (26) and the screw body (3).

2. The screw injection device for chemical fiber spinning production according to claim 1, characterized in that: The transmission assembly (7) comprises a rotating shaft sleeve (71) and a transmission gear (73); the rotating shaft sleeve (71) is fixed on the screw body (3) and is located in the stirring zone (22); a rotating sleeve (72) is rotatably connected to the rotating shaft sleeve (71); an outer end of the stirring rod (26) is rotatably connected to the inner wall of the housing (2); an inner end of the stirring rod (26) is rotatably connected to the outer surface of the rotating sleeve (72); and the transmission gear (73) is fixed on the stirring rod (26).

3. The screw injection device for chemical fiber spinning production according to claim 2, characterized in that: An annular plate (74) is fixed on the rotating shaft sleeve (71) and located outside the rotating sleeve (72). An annular tooth plate (75) is fixed on the side of the annular plate (74) close to the transmission gear (73). The annular tooth plate (75) is meshed with the transmission gear (73).

4. The screw injection device for chemical fiber spinning production according to claim 1, characterized in that: A hydraulic sensor (61) is installed on the extrusion head (6).

5. The screw injection device for chemical fiber spinning production according to claim 1, characterized in that: A group of heating sleeves (24) are fixed on the outside of the shell (2) and aligned with the heating zone (21); a heat preservation sleeve (25) is fixed on the outside of the shell (2) and aligned with the stirring zone (22); and a filter screen (27) is fixed inside the shell (2) and located between the heating zone (21) and the stirring zone (22).

6. The screw injection device for chemical fiber spinning production according to claim 1, characterized in that: A feed hopper (5) is installed on the rear side of the upper end of the shell (2), and the position of the feed hopper (5) is aligned with the position of the heating zone (21).

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