High-capacity runner for melt spinning fiber production line

Abstract

The utility model discloses a high-capacity runner for a melt spinning fiber production line, which comprises a feeding plate, and a horizontal runner and a vertical runner are arranged on the feeding plate; the upper part of the vertical runner is sealed by a large plug, the lower part of the large plug is provided with a first guide cambered surface, the lower part of the vertical runner is connected with a sub-runner, and the included angle between the sub-runner and the axis of the feeding plate is 60-80 degrees; each branch runner comprises an opening formed in the side wall of the feeding plate, and each opening is sealed through a small plug; an annular distribution groove is formed in the lower end surface of the feeding plate, the distribution groove comprises an upper groove with a triangular cross section and a lower groove with a square cross section, a plurality of sub-runners communicated with the sub-runners are arranged at the upper part of the upper groove corresponding to the sub-runners, and the sub-runners and the sub-runners have the same inner diameter; and the included angle between the sub-runner and the sub-runner is greater than 110 degrees.

Description

Technical Field

[0001] This utility model relates to the field of textile technology, and in particular to large-capacity flow channels for melt-spun fiber production lines. Background Technology

[0002] In melt-spun fiber production, molten liquid flows through a flow channel and is ejected at high speed from the spinneret, where it cools to form fibers. To increase output, the flow rate must be increased; however, simply increasing the inner diameter of the flow channel would require corresponding adjustments to the external piping, making the modification difficult. Fluid analysis within the flow channel revealed that the large angles at various bends, lacking streamlined transitions, easily create "dead zones." Material accumulates and rotates within these zones, forming eddies that obstruct the flow of liquid within the channel, reducing flow velocity and consequently decreasing output. Utility Model Content

[0003] The purpose of this utility model is to provide a large-capacity flow channel for melt-spinning fiber production lines that solves or partially solves the above-mentioned technical problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A high-capacity flow channel for a melt-spun fiber production line includes a cylindrical feed plate. A feed inlet is located on one side of the feed plate. A horizontal flow channel extends horizontally from the feed inlet towards the center of the feed plate. A vertical flow channel extends inward along the axis of the feed plate and connects to the horizontal flow channel on the upper surface of the feed plate. The upper part of the vertical flow channel is closed by a large plug. The lower part of the large plug has a first guiding arc surface tangent to both the horizontal flow channel and the vertical flow channel. The lower part of the vertical flow channel is connected to several downwardly inclined branch channels. The angle between the branch channels and the axis of the feed plate is 60-80°. Each branch channel includes an opening on the side wall of the feed plate, and all openings are... The feed plate has a small plug for sealing; an annular distribution groove is provided on the lower end face of the feed plate, the distribution groove includes an upper groove with a triangular cross-section and a lower groove with a square cross-section, the upper part of the upper groove is provided with several sub-channels corresponding to the flow channel, the sub-channels and the flow channel have the same inner diameter; the included angle between the sub-channels and the flow channel is greater than 110°; a circular distribution plate is provided on the lower end face of the feed plate, the distribution plate is provided with several through distribution holes corresponding to the position of the lower groove; a circular spinneret is provided on the lower part of the distribution plate, the spinneret is provided with several through spinneret holes corresponding to the position of the lower groove; a pressure ring is provided on the lower part of the spinneret to fix the distribution plate and the spinneret.

[0006] Preferably, the lower part of the sub-channel is inclined outward, and the included angle between the sub-channel and the axis of the feed plate is 5 to 30°.

[0007] Preferably, the angle between the branch channel and the axis of the feed plate is 70°, the maximum flow rate ratio between the horizontal channel and all sub-channels is 0.4 to 0.45, and the angle between the sub-channels and the branch channel is 130°.

[0008] Preferably, the distribution groove is provided with a plurality of arc-shaped upper grooves corresponding to the sub-channels, and there are partitions between adjacent upper grooves. Each sub-channel is connected to the middle of an upper groove.

[0009] Preferably, the front part of each small plug is flush with the inner wall of the sub-channel and has a second guiding arc surface that is tangent to both the branch channel and the sub-channel.

[0010] Preferably, the opening is provided with a stepped hole, and a countersunk screw is disposed in the opening and threadedly connected to the small plug; the countersunk screw is fixedly disposed on the feed plate by welding.

[0011] Preferably, the spinneret is provided with an annular flow equalization groove at the position corresponding to the lower groove. The cross-section of the flow equalization groove is trapezoidal. The flow equalization groove includes a wedge-shaped area with a triangular cross-section located on the inner side and a square area with a rectangular cross-section located on the outer side. All the spinneret holes are located in the square area.

[0012] Preferably, the upper part of the lower trough is provided with an annular sieve plate, and the sieve plate is provided with sieve holes; the upper part of the lower trough is provided with an annular filter screen assembly, the filter screen assembly includes multiple overlapping annular filter screens and an annular jacket disposed on the outer edge of the filter screens to fix all the filter screens, the cross-section of the jacket is C-shaped; the lower trough is provided with sea sand for filtration.

[0013] Preferably, the filter assembly includes, from top to bottom, a first filter, a second filter, a third filter, and a fourth filter, wherein the mesh sizes of the first filter, the second filter, the third filter, and the fourth filter are 350 mesh, 200 mesh, 50 mesh, and 20 mesh, respectively.

[0014] Preferably, the middle part of the distribution plate and the spinneret is fixed to the feed plate by fastening screws.

[0015] Preferably, the dispensing holes have the same diameter and adjacent dispensing holes have the same spacing; the lower end face of the feed plate is provided with a limiting groove, and the dispensing plate is provided with a protruding limiting step corresponding to the limiting groove.

[0016] The beneficial effects of this utility model are as follows: the triple design of guiding arc surface, large angle turn and arc transition effectively eliminates the "dead zone" problem in traditional devices; the combination of 70° flow channel included angle and 5-30° sub-flow channel tilt angle achieves the best balance of fluid dynamic pressure; the flow ratio is controlled at 0.4-0.45 to ensure the balance of flow and pressure in each flow channel; the triangular upper groove of the distribution groove promotes fluid diffusion, and the square lower groove stabilizes the flow; the gradient filtration design of the four-layer filter screen; the wedge-shaped area of ​​the flow equalization groove guides the flow, and the square area stabilizes the pressure. Attached Figure Description

[0017] Figure 1 This is a cross-sectional structural schematic diagram of the present invention;

[0018] Figure 2 This is a front view structural diagram of the feed plate;

[0019] Figure 3 This is a front view schematic diagram of the sieve plate structure;

[0020] Figure 4 This is a cross-sectional view of the filter assembly.

[0021] Figure 5 yes Figure 4 Enlarged view of a portion of point A in the middle;

[0022] Figure 6 This is a front view structural diagram of the distribution plate;

[0023] Figure 7 This is a cross-sectional view of the distribution plate.

[0024] Figure 8 This is a cross-sectional view of the spinneret. Detailed Implementation

[0025] The technical solution of this utility model will be further described in detail below with reference to specific embodiments.

[0026] In the description of this utility model, it should be noted that the terms "inner", "outer", "upper", "lower", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] like Figures 1 to 8As shown, a large-capacity flow channel for a melt-spun fiber production line of this utility model includes a cylindrical feed plate 10. A feed inlet 12 is provided on one side of the feed plate 10. A horizontal flow channel 14 extends horizontally from the feed inlet 12 towards the center of the feed plate 10. A vertical straight flow channel 16, extending inward along the axis of the feed plate 10 and connecting to the horizontal flow channel 14, is provided on the upper end face of the feed plate 10. The upper part of the vertical straight flow channel 16 is closed by a large plug 18. A first guide arc surface 20, tangent to both the horizontal flow channel 14 and the vertical straight flow channel 16, is provided at the lower part of the large plug 18. Several downwardly inclined branch channels 22 are connected to the lower part of the vertical straight flow channel 16. The angle between the branch channels 22 and the axis of the feed plate 10 is 70°. The branch channels 22 include openings (not shown) provided on the side wall of the feed plate 10. The openings are all sealed by small plugs 24; an annular distribution groove 26 is provided on the lower end face of the feed plate 10, the distribution groove 26 includes an upper groove 28 with a triangular cross-section and a lower groove (not marked) with a square cross-section. The upper part of the upper groove 28 is provided with several sub-channels 30 that connect to the sub-channel 22, and the inner diameter of the sub-channels 30 and the sub-channel 22 is the same; a circular distribution plate 32 is provided on the lower end face of the feed plate 10, and several through distribution holes 34 are provided on the distribution plate 32 corresponding to the position of the lower groove; a circular spinneret 36 is provided on the lower part of the distribution plate 32, and several through spinneret holes (not marked) are provided on the spinneret 36 corresponding to the position of the lower groove; a pressure ring 38 for fixing the distribution plate 32 and the spinneret 36 is provided on the lower part of the spinneret 36.

[0028] The sub-channel 30 is inclined outward at its lower part, and the angle between the sub-channel 30 and the axis of the feed plate 10 is 20°, so that the angle between the sub-channel 30 and the branch channel 22 is 130°.

[0029] In this embodiment, the diameter of the horizontal flow channel 14 is 22 mm, and the diameter of the sub-flow channel 30 is 12 mm. This arrangement ensures that the horizontal flow channel 14 and all sub-flow channels 30 meet the requirement of a maximum flow ratio of 0.4 to 0.45. Experiments have shown that an excessively high flow ratio leads to high pressure in the inlet area, increasing the risk of breakage and leakage, and increasing energy consumption; while an excessively low flow ratio results in low flow velocity, low spinneret pressure, and uneven filament distribution. The arrangement of this invention achieves a good balance between these two factors.

[0030] Specifically, the distribution trough 26 is provided with several arc-shaped upper troughs 28 corresponding to the sub-flow channels 30. There are partitions 40 between adjacent upper troughs 28, and each sub-flow channel 30 is connected to the middle of an upper trough 28. Through the partitions 40, the fluid pressure and flow rate entering the sub-flow channels 30 do not interfere with each other as much as possible, thus making them more uniform.

[0031] The front part of the small plug 24 is flush with the inner wall of the sub-flow channel 30 and has a second guide arc surface 42 that is tangent to both the branch channel 22 and the sub-flow channel 30. The first guide arc surface 20 and the second guide arc surface 42, together with the large angle turn between the sub-flow channel 30 and the branch channel 22, form an arc transition, thereby greatly improving the fluid flow, reducing dead zones and increasing flow rate.

[0032] A stepped hole (unmarked) is provided at the opening, and a countersunk screw 44 is placed in the opening and threaded to a small plug 24; the countersunk screw 44 can be fixed on the feed plate 10 by welding.

[0033] The spinneret 36 is annular, and an annular flow equalization groove 46 is provided at the position of the lower groove on the spinneret 36. The cross-section of the flow equalization groove 46 is trapezoidal. The flow equalization groove 46 includes a wedge-shaped area 48 with a triangular cross-section located on the inner side and a square area 50 with a rectangular cross-section located on the outer side. All spinneret holes are located in the square area 50.

[0034] The upper part of the lower trough is provided with an annular sieve plate 52, which has sieve holes (not marked); the upper part of the lower trough is provided with an annular filter screen assembly, which includes multiple overlapping annular filter screens 54 and an annular sleeve 56 provided on the outer edge of the filter screens 54 to fix all the filter screens 54. The cross-section of the sleeve 56 is C-shaped; the lower trough is provided with sea sand 58 for filtration.

[0035] The filter assembly, from top to bottom, includes a first filter 60, a second filter 62, a third filter 64, and a fourth filter 66. The mesh sizes of the first filter 60, second filter 62, third filter 64, and fourth filter 66 are 350 mesh, 200 mesh, 50 mesh, and 20 mesh, respectively. This multi-layered filter system balances the pressure within the flow channel, achieving filtration while ensuring that the outlet pressure does not drop suddenly, thus affecting the quality of the filaments.

[0036] The middle of the distribution plate 32 and the spinneret 36 are fixed to the feed plate 10 by fastening screws.

[0037] The distribution holes 34 have the same diameter and the same spacing between adjacent distribution holes 34; the lower end face of the feed plate 10 is provided with a limiting groove (not marked), and the distribution plate 32 is provided with a protruding limiting step 70 corresponding to the limiting groove for better positioning.

[0038] In the assembly of this utility model, each component is first machined. When installing the large plug 18, a large positioning rod, slightly smaller in diameter than the horizontal flow channel 14 and with its front end aligned with the first guide arc surface 20, is first inserted into the horizontal flow channel 14. Then, the large plug 18 is inserted into the vertical flow channel 16. The angle and position of the large plug 18 and the large positioning rod are adjusted to ensure they fit snugly. Once in place, the large plug 18 is welded to complete the assembly. A screw hole is also pre-drilled on the large plug 18 for installing the lifting ring 72. When assembling the small plug 24, the same steps are followed, and finally, countersunk screws 44 are welded on. Using the structure of this utility model, assembly can be completed according to the above method.

[0039] In use, the fluid enters from the horizontal flow channel 14, flows in from the vertical flow channel 16, passes through the branch channel 22 and the sub-flow channel 30 and enters the distribution tank 26. It is filtered layer by layer by the screen plate 52, sea sand 58 and filter screen assembly in the lower tank, and enters the spinneret hole from the flow equalization tank 46 to complete the spinning.

[0040] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A large-capacity flow channel for a melt-spun fiber production line, comprising a cylindrical feed plate, characterized in that: A feed inlet is provided on one side of the feed plate, and a horizontal flow channel extends horizontally towards the center of the feed plate from the feed inlet. A vertical straight flow channel extends inward along the axis of the feed plate and connects to the horizontal flow channel on the upper end face of the feed plate. The upper part of the vertical straight flow channel is closed by a large plug, and the lower part of the large plug has a first guide arc surface tangent to both the horizontal flow channel and the vertical straight flow channel. The lower part of the vertical straight flow channel is connected to several downwardly inclined branch channels, and the angle between the branch channels and the axis of the feed plate is 60-80°. Each branch channel includes an opening on the side wall of the feed plate, and each opening is closed by a small plug. An annular distribution groove is provided on the lower end face of the feed plate, and the distribution groove includes a cross-section. The device comprises a triangular upper groove and a square lower groove. The upper part of the upper groove has several sub-channels corresponding to the branch channel, all connected to the branch channel. The inner diameters of the sub-channels and branch channels are the same. The front of each small plug is flush with the inner wall of the sub-channel and has a second guiding arc surface tangent to both the branch channel and the sub-channels. The included angle between the sub-channels and branch channels is greater than 110°. A circular distribution plate is provided on the lower end face of the feed plate, with several through-holes corresponding to the lower groove. A circular spinneret is provided at the lower part of the distribution plate, with several through-holes corresponding to the lower groove. A pressure ring is provided at the lower part of the spinneret to fix the distribution plate and the spinneret.

2. The large-capacity flow channel for a melt-spun fiber production line according to claim 1, characterized in that, The lower part of the sub-channel is inclined outward, and the included angle between the sub-channel and the axis of the feed plate is 5 to 30°.

3. The large-capacity flow channel for a melt-spun fiber production line according to claim 1, characterized in that, The angle between the branch channel and the axis of the feed plate is 70°, the maximum flow rate ratio between the horizontal channel and all sub-channels is 0.4 to 0.45, and the angle between the sub-channels and the branch channel is 130°.

4. The large-capacity flow channel for a melt-spun fiber production line according to claim 1, characterized in that, The distribution slot is provided with a number of arc-shaped upper slots corresponding to the sub-channels. There are partitions between adjacent upper slots, and each sub-channel is connected to the middle of an upper slot.

5. The large-capacity flow channel for a melt-spun fiber production line according to claim 1, characterized in that, A stepped hole is provided at the opening, and a countersunk screw is placed in the opening and threaded to the small plug; the countersunk screw is fixedly mounted on the feed plate by welding.

6. The large-capacity flow channel for a melt-spun fiber production line according to claim 1, characterized in that, The spinneret is provided with an annular flow equalization groove corresponding to the position of the lower groove. The cross-section of the flow equalization groove is trapezoidal. The flow equalization groove includes a wedge-shaped area with a triangular cross-section located on the inner side and a square area with a rectangular cross-section located on the outer side. All the spinneret holes are located in the square area.

7. A large-capacity flow channel for a melt-spun fiber production line according to claim 1, characterized in that, The upper part of the lower trough is provided with an annular sieve plate, which has sieve holes; the upper part of the lower trough is provided with an annular filter screen assembly, which includes multiple overlapping annular filter screens and an annular sleeve disposed on the outer edge of the filter screens to fix all the filter screens, the sleeve having a C-shaped cross-section; the lower trough is provided with sea sand for filtration.

8. A large-capacity flow channel for a melt-spun fiber production line according to claim 7, characterized in that, The filter assembly comprises, from top to bottom, a first filter, a second filter, a third filter, and a fourth filter, with mesh sizes of 350 mesh, 200 mesh, 50 mesh, and 20 mesh, respectively.

9. A large-capacity flow channel for a melt-spun fiber production line according to claim 1, characterized in that, The distribution plate and spinneret are fixed to the feed plate in the middle by fastening screws.

10. A large-capacity flow channel for a melt-spun fiber production line according to claim 1, characterized in that, The distribution holes have the same diameter and the adjacent distribution holes have the same spacing; the lower end face of the feed plate is provided with a limiting groove, and the distribution plate is provided with a protruding limiting step corresponding to the limiting groove.

Images