Screw extruder for bottle flake spinning

Abstract

The utility model discloses a screw extruder for bottle flake spinning, which comprises an extruder measuring head, a machine head ring key flange, a screw, a machine barrel, a heating ring, a heat preservation cover, a fan, an air supply pipe and a junction box, the machine barrel extends from front to back, the extruder measuring head is arranged on the machine head ring key flange, the machine head ring key flange adopts a split structure, and the screw is arranged on the machine head ring key flange. The machine head ring key flange is fixed to the rear end of the machine barrel, the screw is rotationally arranged in the machine barrel, the heating ring wraps the outer side wall of the machine barrel, the machine barrel is sleeved with the heat preservation cover, the fan and the air supply pipe are fixed to the bottom of the heat preservation cover, and the junction box is installed on the outer side of the heat preservation cover through the heat insulation columns. The measuring head of the extruder is flexible to install, the heat preservation effect of the heat preservation cover is good, energy consumption increase caused by heat loss is avoided, the fan dissipates heat of the machine barrel and the screw in time when the screw is overheated, melt decomposition is avoided, and the final spinning quality is improved.

Description

Technical Field

[0001] The present application relates to the technical field of chemical fiber spinning manufacturing equipment, and in particular to a screw extruder for bottle flake spinning. Background Art

[0002] The screw extruder is one of the main equipment for producing chemical fiber filaments. Its function is to plasticize the raw materials into a uniform melt. The melt is continuously extruded into the die head by the screw at a constant temperature, pressure, and quantity. The preparation of the melt plays a decisive role in the quality of the filament. Existing bottle flake extruders have some problems in actual production: the temperature of the extruder insulation cover increases, the pressure sensor of the extruder measuring head is damaged and the replacement cost is high, the terminal box overheats, and the metering and mixing sections of the screw exceed the temperature. These problems affect the normal operation of the bottle flake spinning line. Heat loss increases energy consumption in the production process. Overheating of the screw affects the plasticization of the melt, resulting in poor product quality. Summary of the Invention

[0003] In order to solve the above technical problems, the purpose of this application is to provide a screw extruder for bottle flake spinning.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical solution: a screw extruder for bottle flake spinning, comprising: an extruder measuring head, a head ring key flange, a screw, a barrel, a heating ring, an insulation cover, a fan, an air supply pipe and a junction box, the barrel extending from front to rear, the extruder measuring head being mounted on the head ring key flange, the head ring key flange adopts a split structure, the head ring key flange is fixed to the rear end of the barrel, the screw is rotatably arranged in the barrel, the heating ring is wrapped around the outer wall of the barrel, the insulation cover is sleeved on the outside of the barrel, the fan and the air supply pipe are fixed to the bottom of the insulation cover, and the junction box is mounted on the outside of the insulation cover through a number of insulating columns.

[0005] In the above technical solution, it is further preferred that the extruder measuring head includes a measuring head core, a measuring head base, a thermal insulation shell and a pressure sensor, the measuring head core is installed in the measuring head base, the thermal insulation shell is wrapped around the outside of the measuring head base, and the inner cavity of the thermal insulation shell is filled with thermal insulation cotton, and the pressure sensor is detachably installed on the measuring head core.

[0006] In the above technical solution, it is further preferred that the head ring key flange includes a ring key and a flange, the ring key is installed at the discharge port of the barrel, and the flange is sleeved on the outside of the ring key.

[0007] In the above technical solution, it is further preferred that the screw includes a rod body extending from front to back and a thread spirally extending along the rod body, the outer diameter of the thread is uniform and unchanged, and the rod body is composed of a feeding section, a compression section, a metering section and a mixing section from front to back, and the bottom diameter of the compression section gradually increases from front to back.

[0008] In the above technical solution, it is further preferred that the inner wall of the barrel is provided with a plurality of material troughs, each of the material troughs extends in the front-to-back direction, the plurality of material troughs are distributed along the circumference of the inner wall of the barrel, and the plurality of material troughs correspond to the feeding section.

[0009] In the above technical solution, it is further preferred that the installation areas of the blower and the air supply pipe correspond to the metering section and the mixing section.

[0010] In the above technical solution, it is further preferred that the inner cavity of the thermal insulation cover is filled with thermal insulation medium, the thermal insulation cover adopts a split structure, the thermal insulation cover includes a thermal insulation upper cover and a thermal insulation lower cover, and a plurality of silicone strips are arranged at the joint of the thermal insulation upper cover and the thermal insulation lower cover.

[0011] In the above technical solution, it is further preferred that ceramic fiber paper is attached to the inner wall surface of the heat-insulating cover.

[0012] In the above technical solution, it is further preferred that the thermal insulation upper cover is provided with a heat dissipation air outlet, the thermal insulation lower cover is provided with a bottom opening, a connecting air duct is connected between the air outlet of the fan and the air supply duct, the connecting air duct is passed through the bottom opening, and the air outlet of the fan, the connecting air duct and the air supply duct are connected in series to form a closed air duct.

[0013] In the above technical solution, it is further preferred that the junction box is provided with a plurality of wiring holes, each of the wiring holes is embedded with a sealing protection strip, and each of the sealing protection strips has a through hole for passing at least one cable.

[0014] Compared with the prior art, this application achieves the following beneficial effects:

[0015] The extruder measuring head of the present application is flexibly installed at the rear end of the barrel and can adapt to different working conditions. The present application has a good thermal insulation effect, which avoids heat loss and increased energy consumption. In addition, a fan is arranged below the metering section and mixing section of the corresponding screw to dissipate heat to the barrel and screw in time when the screw is overheated, thereby avoiding melt decomposition and improving the final spinning quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a screw extruder provided in an embodiment of the present application;

[0017] Figure 2 for Figure 1 A top view of the screw extruder in FIG.

[0018] Figure 3 for Figure 1 Schematic diagram of the structure of the extruder measuring head;

[0019] Figure 4 for Figure 1 Schematic diagram of the structure of the head ring key flange;

[0020] Figure 5 for Figure 1 Schematic diagram of the structure of the barrel;

[0021] Figure 6 for Figure 1 A schematic diagram of the structure of the thermal insulation cover;

[0022] Figure 7 for Figure 6 A schematic cross-sectional view of the thermal insulation cover;

[0023] Figure 8 for Figure 1 The main view of the junction box in FIG;

[0024] Figure 9 for Figure 8 Top view of the junction box in Figure 1.

[0025] Among them: 1. Extruder measuring head; 11. Measuring head core; 12. Measuring head base; 13. Insulation shell; 14. Pressure sensor; 2. Head ring key flange; 21. Ring key; 22. Flange; 3. Screw; 4. Barrel; 41. Material trough; 5. Heating coil; 6. Insulation cover; 61. Silicone strip; 62. Insulation upper cover; 63. Insulation lower cover; 64. Ceramic fiber paper; 7. Fan; 8. Air supply duct; 9. Junction box; 91. Wiring hole; 92. Insulation column. DETAILED DESCRIPTION

[0026] In order to describe the technical content, structural features, achieved purposes and effects of the application in detail, the technical solutions in the embodiments of the application will be described below in conjunction with the drawings in the embodiments of the application. Obviously, the described embodiments are only a part of the embodiments of the application, rather than all of the embodiments. In the following description, for the purpose of explanation, many specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may also be implemented without these specific details or in the case of one or more equivalent arrangements. In addition, various exemplary embodiments may be different, but are not necessarily exclusive. For example, without departing from the inventive concept, the specific shape, structure and characteristics of the exemplary embodiment may be used or implemented in another exemplary embodiment.

[0027] The present application embodiment provides a screw extruder for bottle flake spinning, such as Figure 1 、 2 As shown, the screw extruder includes: an extruder measuring head 1, a head ring key flange 2, a screw 3, a barrel 4, a heating coil 5, an insulation cover 6, a fan 7, an air supply pipe 8 and a junction box 9. The barrel 4 extends from front to back, the extruder measuring head 1 is mounted on the head ring key flange 2, the head ring key flange 2 adopts a split structure, the head ring key flange 2 is fixed to the rear end of the barrel 4, the screw 3 is rotatably arranged in the barrel 4, the heating coil 5 is wrapped on the outer wall of the barrel 4, the insulation cover 6 is sleeved on the outside of the barrel 4, the fan 7 and the air supply pipe 8 are fixed to the bottom of the insulation cover 6, and the junction box 9 is mounted on the outside of the insulation cover 6 through a number of insulation columns.

[0028] like Figure 3 As shown, the extruder measuring head 1 includes a measuring head core 11, a measuring head base 12, a thermal insulation shell 13 and a pressure sensor 14. The measuring head core 11 is installed in the measuring head base 12, the thermal insulation shell 13 is wrapped around the outside of the measuring head base 12, and the inner cavity of the thermal insulation shell 13 is filled with thermal insulation cotton. The pressure sensor 14 is detachably installed on the measuring head core 11.

[0029] like Figure 4 As shown, the head ring key flange 2 includes a ring key 21 and a flange 22. The ring key 21 is used in combination of two semi-circular rings. The ring key 21 is clamped around the end of the discharge port of the barrel 4, and the flange 22 is sleeved on the outside of the ring key 21.

[0030] The extruder measuring head 1 is flexibly mounted on the rear end of the barrel 4 via the head ring key flange 2. The pressure sensor 14 is detachably mounted on the measuring head core 11. When the pressure sensor 14 is damaged, only the pressure sensor 14 needs to be replaced separately, which is convenient for replacement and reduces the customer's maintenance costs.

[0031] like Figure 1 、 5As shown, the screw 3 includes a rod body extending from front to back and a thread extending helically along the rod body. The outer diameter of the thread is uniform and unchanged. The rod body is divided into a feed section, a compression section, a metering section, and a mixing section from front to back, and the bottom diameter of the compression section gradually increases from front to back. The screw 3 rotates within the barrel 4 to shear and stir the material, so that the material is fully melted and plasticized into the desired melt. The inner wall of the barrel 4 is provided with a plurality of feed troughs 41, each extending in the front-to-back direction. Several feed troughs 41 are distributed along the circumference of the inner wall of the barrel 4, and several feed troughs 41 correspond to the feed section of the screw 3. The feed troughs 41 within the barrel 4 help increase the material intake of the screw 3, thereby increasing the output of the screw extruder. In the embodiment of the present application, the groove depth of the groove 41 is 2-3 mm, the groove width is 6-8 mm, and the length is 3.5 to 4 times the diameter of the screw 3.

[0032] A plurality of heating rings 5 ​​are installed on the outer wall surface of the barrel 4 . The plurality of heating rings 5 ​​are arranged at intervals from front to back and are used to heat the barrel 4 .

[0033] like Figure 1 、 6 As shown in Figures 7 and 8, the inner wall of the insulation cover 6 is laminated with 5 mm thick ceramic fiber paper 64, and the inner cavity of the insulation cover 6 is filled with an insulating medium, which is insulation cotton made of silicate or aluminum silicate. The insulation cover 6 has a split structure, including an upper insulation cover 62 and a lower insulation cover 63. Several silicone strips 61 are arranged at the junction of the upper insulation cover 62 and the lower insulation cover 63. The insulation cover 6 improves the insulation effect of the barrel 4, reduces heat loss, and reduces the energy consumption of the screw extruder.

[0034] The thermal insulation upper cover 62 is provided with heat dissipation outlet holes, several of which are arranged in a matrix at the top of the thermal insulation upper cover 62. The thermal insulation lower cover 63 has a bottom opening. A connecting air duct is connected between the air outlet of the fan 7 and the air supply pipe 8. The connecting air duct is installed in the bottom opening. The air outlet of the fan 7, the connecting air duct, and the air supply pipe 8 are connected in series to form a closed air duct. The fan 7 delivers flowing air into the thermal insulation cover 6 through the closed air duct, thereby improving the heat dissipation efficiency of the barrel 4. The air outlet of the air supply pipe 8 adopts a bell-shaped design to increase the air outlet surface, improve heat dissipation efficiency, and reduce the number of fans 7 installed, thereby reducing costs.

[0035] The installation area of ​​the fan 7 and the air supply pipe 8 corresponds to the metering section and the mixing section of the screw 3. The fan 7 starts in time when the screw extruder overheats to dissipate heat from the barrel 4, preventing the melt from decomposing due to overheating and improving the quality of the final spinning.

[0036] like Figure 2 、 8As shown in Figures 9 and 9, the junction box 9 is supported on the side of the insulation cover 6 by several insulating columns 92. The insulating columns are made of hard, high-density rubber asbestos board. The insulating columns reduce heat conduction between the insulation cover 6 and the junction box 9, preventing heat loss. The junction box 9 is provided with several wiring holes 91, each of which is embedded with a sealing strip. Each sealing strip has a through hole for at least one cable to pass through. The sealing strip can prevent the cable from being scratched when passing through the wiring hole 91, thereby improving the safety of equipment operation.

[0037] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments. The above embodiments and descriptions are only for illustrative purposes. Various changes and improvements may be made to the present application without departing from the spirit and scope of the present application. The scope of protection claimed in the present application is defined by the appended claims, the description and their equivalents.

Claims

1. A screw extruder for bottle flake spinning, characterized in that: include: An extruder measuring head (1), a head ring key flange (2), a screw (3), a barrel (4), a heating coil (5), a heat preservation cover (6), a fan (7), an air supply pipe (8) and a junction box (9), wherein the barrel (4) extends from front to rear, the extruder measuring head (1) is mounted on the head ring key flange (2), the head ring key flange (2) adopts a split structure, the head ring key flange (2) is fixed to the rear end of the barrel (4), the screw (3) is rotatably arranged in the barrel (4), the heating coil (5) is wrapped around the outer wall of the barrel (4), the heat preservation cover (6) is sleeved on the outside of the barrel (4), the fan (7) and the air supply pipe (8) are fixed to the bottom of the heat preservation cover (6), and the junction box (9) is mounted on the outside of the heat preservation cover (6) through a plurality of heat-insulating columns (92).

2. The screw extruder according to claim 1, characterized in that The extruder measuring head (1) comprises a measuring head core (11), a measuring head base (12), a heat-insulating shell (13) and a pressure sensor (14); the measuring head core (11) is mounted in the measuring head base (12); the heat-insulating shell (13) is wrapped around the outside of the measuring head base (12); and the inner cavity of the heat-insulating shell (13) is filled with heat-insulating cotton; the pressure sensor (14) is detachably mounted on the measuring head core (11).

3. The screw extruder according to claim 1, characterized in that The head ring key flange (2) includes a ring key (21) and a flange (22), the ring key (21) is installed at the discharge port of the barrel (4), and the flange (22) is sleeved on the outside of the ring key (21).

4. The screw extruder according to claim 1, characterized in that The screw (3) comprises a rod body extending from front to back and a thread extending helically along the rod body, the outer diameter of the thread is uniform and constant, the rod body is divided into a feeding section, a compression section, a metering section and a mixing section from front to back, and the bottom diameter of the compression section gradually increases from front to back.

5. The screw extruder according to claim 4, characterized in that The inner wall of the barrel (4) is provided with a plurality of material grooves (41), each of the material grooves (41) extends in the front-to-back direction, the plurality of material grooves (41) are distributed along the circumference of the inner wall of the barrel (4), and the plurality of material grooves (41) correspond to the feeding section.

6. The screw extruder according to claim 4, characterized in that The installation areas of the fan (7) and the air supply pipe (8) correspond to the metering section and the mixing section.

7. The screw extruder according to claim 1, characterized in that The inner cavity of the heat-insulating cover (6) is filled with a heat-insulating medium. The heat-insulating cover (6) adopts a split structure. The heat-insulating cover (6) includes a heat-insulating upper cover (62) and a heat-insulating lower cover (63). A plurality of silicone strips (61) are arranged at the joint between the heat-insulating upper cover (62) and the heat-insulating lower cover (63).

8. The screw extruder according to claim 7, characterized in that The inner wall surface of the heat-insulating cover (6) is fitted with ceramic fiber paper (64).

9. The screw extruder according to claim 7, characterized in that The heat-insulating upper cover (62) is provided with a heat dissipation air outlet, and the heat-insulating lower cover (63) is provided with a bottom opening. A connecting air duct is connected between the air outlet of the fan (7) and the air supply pipe (8), and the connecting air duct is passed through the bottom opening. The air outlet of the fan (7), the connecting air duct and the air supply pipe (8) are connected in series to form a closed air duct.

10. The screw extruder according to claim 1, characterized in that The junction box (9) is provided with a plurality of wiring holes (91), each of the wiring holes (91) is embedded with a sealing protection strip, and each of the sealing protection strips has a through hole for at least one cable to pass through.

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