A monomer suction shroud for ring blowing

Abstract

The present invention discloses a monomer suction hood for ring blowing, which belongs to the technical field of spinning equipment product structure in chemical machinery products. It comprises a suction cavity surrounded by a first shell and a second shell, and a rectifier tube structure mainly composed of a first sleeve and a second sleeve arranged in the suction cavity; the present invention has the advantages of being able to effectively clean monomers and oligomers generated during the spinning process, shorten the cleaning cycle of the cooling air net and components, improve the quality stability of the spun fiber, stabilize the suction wind, have little effect on the filament bundle, effectively clean monomers and oligomers, and thus be suitable for internal and external ring blowing to make the filament bundle evenly stressed.

Description

Technical Field

[0001] The invention relates to a monomer suction hood for ring blowing, belonging to the technical field of chemical machinery product equipment structure, in particular to the technical field of spinning equipment product structure in chemical machinery products. Background Art

[0002] A spinning machine is a machine that forms a fiber-forming polymer solution or melt into a filament. In the process of chemical fiber manufacturing, the spinning fluid is continuously extruded from the spinneret hole, cooled by air or solidified in a coagulation bath to form a continuous filament or filament; cooling and forming is one of the important processes in filament production. The cooling conditions are the determining factors of the solidification process, which strongly affect the structure of the filament and the various distributions on the spinning line, and are the root of a series of unevenness. During melt spinning, the melt is ejected from the capillary holes of the spinneret, cooled, stretched and finally solidified into filaments. If divided according to the direction of the cooling airflow, it can be divided into side blowing and ring blowing.

[0003] During side blowing, the melt stream is blown from one side of the filament bundle by cooling wind. It has a simple structure, convenient operation and high cooling intensity. However, the cooling intensity near the air outlet is much higher than that far from the air outlet. The cooling intensity is uneven, resulting in uneven temperature on the windward and leeward sides of the same cross section. During ring blowing, the filaments are cooled in the form of annular wind. Because the cooling wind blows uniformly from the inside or outside of the filament bundle to the filament bundle, it is divided into inner ring blowing and outer ring blowing. The blowing surface is very close to the filaments, which greatly improves energy efficiency. The cooling air has a low temperature rise, and the cooling conditions of each filament are similar. In addition, the air supply area is small, and the wind speed is lower than that of side blowing. Overall, it saves more than 70% of energy than side blowing. With the development of filaments towards fine denier and multiple strands, as well as the need to develop new products, many manufacturers are competing to use ring blowing equipment.

[0004] In the spinning process, the volatile monomers are actually the general term for low molecular weight substances, small molecular weight substances and polymerized warheads. These monomers volatilize after the melt is extruded from the spinneret. When cooled, they easily form white smoke near the spinneret and adhere to the surface of the spinneret, resulting in the deterioration of spinning conditions. If the monomers are not removed in time, normal production will be seriously affected, resulting in many broken ends, decreased tow strength, reduced yarn uniformity, poor dyeing performance and other unfavorable phenomena, and the production operating environment will also become harsh.

[0005] However, the existing suction hood is a side suction type with a single-side opening, and is only used for side blowing cooling; while the ring blowing equipment does not have a suction hood. If the single suction hood used for side blowing is used for ring blowing, the aforementioned problems will be caused due to uneven force on the filament bundle, thereby losing the meaning of uniform cooling by ring blowing. Summary of the invention

[0006] The present invention provides a monomer suction hood for ring blowing, so as to overcome the problem that the ring blowing equipment in the prior art does not have a monomer suction hood. For example, simply applying the side-blowing monomer suction hood to the ring blowing equipment will lead to uneven cooling. The monomers and oligomers generated in the spinning process can be effectively cleaned, the cleaning cycle of the cooling air net and components can be shortened, the quality stability of the spun fibers can be improved, the suction wind can be stabilized, the impact on the filament bundle is small, and the monomers and oligomers can be effectively cleaned, thereby providing a device suitable for internal and external ring blowing that can make the filament bundle evenly stressed.

[0007] To achieve the above-mentioned purpose, the technical solution of the present invention is as follows:

[0008] A single-body suction hood for ring blowing, characterized by comprising a first shell, a second shell, an air outlet flange, a sealing gasket, an air outlet assembly, a pipe clamp, a hinge assembly, a lower cover, a first sleeve, a second sleeve and a support column;

[0009] The first shell and the second shell are structures arranged up and down, the first shell is a plate-shaped rigid structure with a trapezoidal shape; the second shell is a groove-shaped rigid structure with a trapezoidal shape and an upward opening; the first shell is embedded or sunk into the second shell;

[0010] The first shell is provided with at least one row of first through holes in a mutually parallel state;

[0011] At least one row of second through holes is arranged on the grooved bottom surface of the second shell in parallel with each other; and the first through holes on the first shell are arranged correspondingly to the second through holes on the second shell, and the center lines between the relative through holes coincide with each other;

[0012] The first through holes are respectively connected with second sleeves, and the center lines of the second sleeves and the corresponding first through holes coincide with each other;

[0013] The second through holes are respectively connected with a first sleeve, and the center line between the first sleeve and the corresponding second through hole coincides;

[0014] The second sleeve is sleeved with the first sleeve to form an annular gap therebetween;

[0015] The support column is located between the first shell and the second shell and is arranged around the first through hole or the second through hole;

[0016] A plurality of third through holes are provided on the bottom surface of the groove-shaped structure along the lower bottom edge of the trapezoidal shape of the second housing;

[0017] The second shell has a protrusion extending integrally along the upper bottom edge of the trapezoid; the air outlet flange is a rectangular annular plate structure, fixedly connected to the end of the protrusion; the air outlet flange is fixed to the air outlet assembly as a whole; the sealing gasket is located between the protrusion and the air outlet assembly;

[0018] The air outlet duct combination is a hollow square-to-round tubular structure, and the tube clamp ring is clamped on the square-to-round round tubular structure;

[0019] The lower cover is a trapezoidal plate structure as a whole, connected to the grooved bottom surface of the second shell; a plurality of hinged couplings are symmetrically arranged along the trapezoidal waist of the lower cover, and the first shell and the second shell are fixedly connected into an integral structure through the hinged couplings.

[0020] The first shell and the second shell are integrally extended along the lower bottom edge of the trapezoid to connect a rectangular space portion, and the first through hole and the second through hole are located on the rectangular space portion.

[0021] The first through holes and the second through holes are arranged in an even number of rows.

[0022] The number of through holes arranged in the same row of the first through hole and the second through hole is one or an even number.

[0023] The ratio of the diameter of the first through hole to the length of the lower base of the trapezoid of the first shell is 9:1.

[0024] The first through holes and the second through holes are staggered between through holes in different rows.

[0025] The second shell body is symmetrically provided with a plurality of steam holes along the groove-shaped side.

[0026] The second shell is symmetrically provided with a plurality of air holes along the bottom surface of the groove-shaped side edge.

[0027] A boss is provided on the grooved bottom surface of the second shell body extending along the trapezoidal waist.

[0028] The annular sleeve gap between the second sleeve and the first sleeve opens upward.

[0029] The technical solution of the present invention has the following advantages:

[0030] 1. The upper and lower sleeves of the present invention are mutually sleeved in the suction cavity, and there is a gap between the two that connects to the suction cavity. This is different from the use of the existing suction hood, which has a suction port on the side and sucks toward one side of the filament bundle. The present invention adopts a rectifier tube structure in which the filament bundle passes through the sleeve; the rectifier tube is connected to the suction cavity through the gap between the upper sleeve (the second sleeve) and the lower sleeve (the first sleeve), and the side walls of the upper sleeve and the lower sleeve guide and rectify the suction airflow, so that a uniform airflow can be formed around the filament bundle, so that the monomers or oligomers around the filament bundle can be sucked into the suction cavity and further extracted while the filament bundle is subjected to uniform force.

[0031] 2. Since the upper through hole (first through hole) and the lower through hole (second through hole) of the single suction hood of the present invention are circular, and the centers of the two circles coincide in the vertical direction, a gap with a circular cross section is formed between the upper sleeve and the lower sleeve. Therefore, the airflow evenly surrounds the filament bundle after passing through the gap, making the force more uniform.

[0032] 3. Since the monomer suction hood of the present invention adopts a thicker upper sleeve and a thinner lower sleeve and the gap between the upper sleeve and the lower sleeve opens upward, the filament bundle moves from top to bottom, and the oligomers around the filament bundle are sucked into the opening of the gap in the downstream.

[0033] 4. Since the single suction hood of the present invention has upper and lower through holes arranged in one or more rows along a straight line, it is suitable for existing tow production lines, and multiple tows can be produced simultaneously, and suction can be achieved using the same suction hood.

[0034] 5. Since the suction cavity used in the single suction hood of the present invention has multiple suction ports, and the suction ports can be arranged on the same side of the rectifier tube structure or symmetrically on both sides, or arranged all around, it can be more convenient and flexible to use.

[0035] 6. Since the single-body suction hood of the present invention is provided with an air vent connected to the suction cavity on the hood body, the air inlet of the suction hood is not limited to the gap of the rectifier tube, so that the airflow in the gap is relatively stable.

[0036] 7. Since the monomer suction hood of the present invention is provided with hot air holes on the hood body for introducing hot air or steam into the suction cavity, the monomers are cooled and condensed in the suction hood, and the inside of the suction hood can be cleaned by steam or hot air. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the structure of a spinning device according to the present invention;

[0038] Figure 2 It is a schematic diagram of the overall structure of the single suction hood of the present invention;

[0039] Figure 3 It is a schematic diagram of the structure decomposition of a preferred embodiment of a single suction hood of the present invention;

[0040] Figure 4 for Figure 3 A schematic diagram of the combined structure in front view;

[0041] Figure 5 for Figure 4 Schematic diagram of section along AA;

[0042] Figure 6 It is a schematic diagram of the structure decomposition of another embodiment of the single suction hood of the present invention;

[0043] Figure 7 for Figure 6 A schematic diagram of the combined structure in front view;

[0044] Figure 8 for Figure 7 Schematic cross-sectional view along BB.

[0045] Description of the symbols in the figure

[0046] 1. First shell 2. Second shell 3. Air outlet flange 4. Gasket 5. Air outlet duct assembly 6. Pipe clamp 7. Hinge joint 8. Lower cover 9. First casing 10. Second sleeve 11. Support column. DETAILED DESCRIPTION

[0047] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings to facilitate a comprehensive understanding of the technical solution of the present invention.

[0048] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 A single-body suction hood for ring blowing includes a first shell 1, a second shell 2, an air outlet flange 3, a sealing gasket 4, an air outlet assembly 5, a pipe clamp 6, a hinge assembly 7, a lower cover 8, a first sleeve 9, a second sleeve 10 and a support column 11;

[0049] The first shell 1 and the second shell 2 are structures arranged up and down. The first shell 1 is a plate-shaped rigid structure with a trapezoidal shape, and a protrusion extends integrally from the bottom edge of the trapezoid; the second shell 2 is a groove-shaped rigid structure with a trapezoidal shape and an opening upward. The so-called groove-shaped structure is a closed structure with a bottom and side edges and an open top surface; the first shell 1 is embedded or sunk into the second shell 2, so that a hollow cavity is naturally formed between the first shell 1 and the second shell 2;

[0050] The first shell 1 and the second shell 2 are integrally extended along the lower bottom edge of the trapezoid to connect a rectangular space portion, and the first through hole and the second through hole are located on the rectangular space portion.

[0051] The first housing 1 is provided with at least one row of first through holes in parallel with each other, for example, one row ( Figure 3-Figure 5 ), 2 rows ( Figure 6-Figure 8 ) or the first through hole of an odd-numbered row or an even-numbered row;

[0052] The grooved bottom surface of the second shell 2 is provided with at least one row of second through holes in parallel with each other; and the first through holes on the first shell 1 are provided correspondingly or one-to-one with the second through holes on the second shell 2, and the center lines between the relative through holes coincide;

[0053] The first through holes and the second through holes are arranged in an even number of rows, such as 2 rows, 4 rows, etc. ( Figure 6-Figure 8 ).

[0054] The number of through holes in the same row of the first through hole and the second through hole is one or an even number, such as one; or for example, 8, 12, etc. The first through hole has the same size as the through holes in the same row, and the second through hole has the same size as the through holes in the same row;

[0055] The ratio of the diameter of the first through hole to the length of the lower trapezoidal base of the first shell 1 is 9:1, that is, the sum of the diameters of the nine through holes is equal to the length of the lower trapezoidal base of the first shell 1 .

[0056] The first through hole and the second through hole are staggered between through holes in different rows ( Figure 6 ).

[0057] The first through holes are respectively connected with second sleeves 10, the center lines of the second sleeves 10 and the corresponding first through holes coincide with each other, and the second sleeves 10 are in sealing contact with the first housing 1;

[0058] The second through holes are respectively connected with first sleeves 9, and the center lines of the first sleeves 9 and the corresponding second through holes coincide with each other; the first sleeves 9 are in sealing contact with the second housing 2;

[0059] The second sleeve 10 is sleeved with the first sleeve 9 and an annular gap is formed therebetween; that is, the inner diameter of the second sleeve 10 is greater than the outer diameter of the first sleeve 9 .

[0060] The support column 11 is located between the first shell 1 and the second shell 2 and is arranged around the first through hole or the second through hole or vertically arranged; the support column 11 is a hollow tube structure or a circular tube structure, and its height or length is respectively greater than the height or length of the first sleeve 9 or the second sleeve 10.

[0061] A plurality of third through holes (ventilation holes) are arranged on the bottom surface of the groove-shaped structure along the trapezoidal lower bottom edge of the second shell 2; the third through holes are arranged in a row and are evenly distributed.

[0062] The second housing 2 has a protruding portion integrally extending along the upper bottom edge of the trapezoid; the air outlet flange 3 is a rectangular annular plate structure (flange type) and is fixedly connected to the end of the protruding portion; the air outlet flange 3 is fixed to the air outlet assembly 5 as a whole; the sealing gasket 4 is located between the protruding portion and the air outlet assembly 5;

[0063] The air outlet duct assembly 5 is a hollow square-to-round tubular structure (the so-called square-to-round means one end is square or rectangular and the other end is a round tube shape), and the tube clamp 6 is clamped on the square-to-round round tubular structure;

[0064] The lower cover 8 is a trapezoidal plate structure as a whole, with protruding ears on both sides; it is connected to the groove-shaped bottom surface of the second shell 2; a plurality of hinge joints 7 are symmetrically arranged along the trapezoidal waist of the lower cover 8, and the first shell 1 and the second shell 2 are fixedly connected into an integral structure through the hinge joints 7.

[0065] The second shell 2 is symmetrically provided with a plurality of steam holes along the groove-shaped side.

[0066] The second housing 2 is symmetrically provided with a plurality of air holes along the bottom surface of the groove-shaped side edge.

[0067] The grooved bottom surface of the second housing 2 is provided with a boss extending along the trapezoidal waist.

[0068] The annular sleeve gap between the second sleeve 10 and the first sleeve 9 opens upward.

[0069] In summary, the single-body suction hood for ring blowing provided by the present invention is composed of a first shell 1 and a second shell 2 to form a hollow suction cavity, the suction cavity is provided with a suction port connected to the exhaust fan (i.e., an air outlet duct combination 5, fixed to the exhaust fan through a pipe clamp 6, and sealed and connected to the suction cavity through an air outlet duct flange 3 and a sealing gasket 4), and the surfaces of the first shell 1 and the second shell 2 are respectively provided with a plurality of upper through holes (first through holes) and lower through holes (second through holes), each of which corresponds to a lower through hole in the vertical direction, and the upper through holes and the lower through holes are connected to each other. The holes are circular, and the centers of the two circles overlap in the vertical direction. The upper through hole is provided with an upper sleeve (second sleeve), and the lower through hole is provided with a lower sleeve (first sleeve). A gap with a circular cross section is formed between the upper sleeve and the lower sleeve to form a rectifier tube structure (that is, the rectifier tube structure is: connecting the upper through hole and the lower through hole, including the upper sleeve and the lower sleeve, and the upper sleeve and the lower sleeve are mutually sleeved in the suction cavity, and there is a gap between the two that connects to the suction cavity), so that the airflow is evenly surrounded around the filament bundle after passing through the gap, so that the force is more uniform. The suction cavity is provided with a vent (third through hole) that connects to the suction cavity, so that the air inlet of the suction hood is not limited to the gap of the rectifier tube, so that the airflow in the gap is relatively stable.

[0070] The upper through hole is connected to the lower through hole through a rectifying tube structure, and the upper sleeve and the lower sleeve are mutually sleeved in the suction cavity, and there is a gap between the two that connects to the suction cavity. The upper sleeve is thicker, and the lower sleeve is thinner, and the gap between the upper sleeve and the lower sleeve opens upward. The filament bundle moves from top to bottom, and the oligomers around the filament bundle are sucked into the opening of the gap downstream. This is different from the use of the existing suction hood, which has a suction port on the side and sucks toward one side of the filament bundle, while the filament bundle of the present invention passes through a rectifying tube structure in the form of a sleeve. The rectifying tube is connected to the suction cavity through the gap between the upper sleeve and the lower sleeve, and the side walls of the upper sleeve and the lower sleeve guide and rectify the suction airflow, so that a uniform airflow can be formed around the filament bundle, so that the monomers or oligomers around the filament bundle can be sucked into the suction cavity and further extracted while the force on the filament bundle is uniform.

[0071] The suction cavity is provided with hot air holes (steam holes) for introducing hot air or steam into the suction cavity. The monomer will cool and condense in the suction hood, and the suction hood can be cleaned by steam or hot air.

[0072] It should be pointed out that the rectifier tube structure is not limited to a cylindrical shape, but may also be other cross-sectional shapes, such as a square, an elliptical, a rectangular or a polygonal shape. The rectifier tube structure is not limited to only including an upper sleeve and a lower sleeve, but may also be in the form of a multi-section sleeve, as long as the airflow can evenly surround the filament bundle.

[0073] It should be noted that the upper through holes and the lower through holes can be arranged in one row or multiple rows along a straight line, so as to be applicable to the existing tow production line, and multiple tows can be produced at the same time and sucked using the same suction hood. At the same time, the suction cavity can have multiple suction ports, and each suction port can be arranged on the same side of the rectifier tube structure or symmetrically arranged on both sides, or arranged on all sides.

Claims

1. A single-body suction hood for ring blowing, characterized in that It comprises a first shell (1), a second shell (2), an air outlet flange (3), a sealing gasket (4), an air outlet assembly (5), a pipe clamp (6), a hinge assembly (7), a lower cover (8), a first sleeve (9), a second sleeve (10) and a support column (11); The first shell (1) and the second shell (2) are structures arranged up and down, the first shell (1) is a plate-shaped rigid structure with a trapezoidal shape, and a protrusion extends integrally from the bottom edge of the trapezoid; the second shell (2) is a groove-shaped rigid structure with a trapezoidal shape and an opening facing upward; the first shell (1) is embedded or sunk into the second shell (2); The first shell (1) is provided with at least one row of first through holes in a mutually parallel state; The grooved bottom surface of the second shell (2) is provided with at least one row of second through holes in a mutually parallel state; and the first through holes on the first shell (1) and the second through holes on the second shell (2) are arranged correspondingly, and the center lines between the relative through holes coincide with each other; The first through holes are respectively connected with second sleeves (10), the center lines of the second sleeves (10) and the corresponding first through holes coincide with each other, and the second sleeves (10) are connected to the first housing (1) in sealing contact; The second through holes are respectively connected with a first sleeve (9), the center line of the first sleeve (9) coincides with the center line of the corresponding second through hole, and the first sleeve (9) is connected with the second shell (2) in sealing contact; The second sleeve (10) is sleeved on the first sleeve (9) to form an annular gap therebetween; The support column (11) is located between the first shell (1) and the second shell (2) and is arranged around the first through hole or the second through hole; the support column (11) is a hollow tube structure, and its height or length is respectively greater than the height or length of the first sleeve (9) or the second sleeve (10); A plurality of third through holes are arranged on the bottom surface of the groove-shaped structure along the trapezoidal lower bottom edge of the second shell (2); The second shell (2) integrally extends a protruding portion along the upper bottom edge of the trapezoid; the air outlet flange (3) is a rectangular annular plate structure, fixedly connected to the end of the protruding portion; the air outlet flange (3) is fixed to the air outlet assembly (5) as a whole through the air outlet flange (3); the sealing gasket (4) is located between the protruding portion and the air outlet assembly (5); The air outlet duct assembly (5) is a hollow square-to-round tubular structure, and the pipe clamp (6) is clamped on the square-to-round tubular structure; The lower cover (8) is a trapezoidal plate structure as a whole, with protruding ears on both sides, connected to the groove-shaped bottom surface of the second shell (2); a plurality of hinge joints (7) are symmetrically arranged along the trapezoidal waist of the lower cover (8), and the first shell (1) and the second shell (2) are fixedly connected to form an integrated structure through the hinge joints (7).

2. A single-body suction hood for ring blowing as claimed in claim 1, characterized in that The first shell (1) and the second shell (2) are integrally extended along the lower bottom edge of the trapezoid to connect a rectangular space portion, and the first through hole and the second through hole are located on the rectangular space portion.

3. A single-body suction hood for ring blowing as claimed in claim 1, characterized in that The first through holes and the second through holes are arranged in an even number of rows.

4. A single-body suction hood for ring blowing as claimed in claim 1, characterized in that The number of through holes arranged in the same row of the first through hole and the second through hole is one or an even number.

5. A single-body suction hood for ring blowing as claimed in claim 1, characterized in that The ratio of the diameter of the first through hole to the length of the lower trapezoidal base of the first shell (1) is 9:

1.

6. A single-body suction hood for ring blowing as claimed in claim 1, characterized in that The first through holes and the second through holes are staggered between through holes in different rows.

7. A single-body suction hood for ring blowing as claimed in claim 1, characterized in that The second shell (2) is symmetrically provided with a plurality of steam holes along the groove-shaped side.

8. A single-body suction hood for ring blowing as claimed in claim 1, characterized in that The second shell (2) is symmetrically provided with a plurality of air holes along the bottom surface of the groove-shaped side edge.

9. A single-body suction hood for ring blowing as claimed in claim 1, characterized in that A boss is provided on the groove-shaped bottom surface of the second shell (2) along the trapezoidal waist.

10. A single-body suction hood for ring blowing as claimed in claim 1, characterized in that The annular sleeve gap between the second sleeve (10) and the first sleeve (9) opens upward.

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