SS non-woven fabric electrospinning fiber nozzle cooling system

Abstract

The utility model discloses an SS non-woven fabric electrospinning fiber nozzle cooling system which comprises pressure-stabilizing side-blowing air boxes arranged on the two sides of the lower portion of a nozzle body, the nozzle body comprises a spinneret plate, and drainage air channels are fixedly installed on the two sides of the bottom of the spinneret plate. The drainage air channel comprises an air blowing groove located in the protruding side face of the bottom of the spinneret plate, a confluence groove fixedly connected to the position, close to the side face, of the bottom of the spinneret plate, a folding channel arranged between the air blowing groove and the confluence groove, and a confluence air scoop located on the side, away from the air blowing groove, of the confluence groove. The folded channel cooled by the cold air exchanges heat with air in the groove in the bottom of the spinneret plate, and the blowing groove cooled by the cold air exchanges heat with air around the bulge at the bottom of the spinneret plate, so that the effect of cooling the SS non-woven fabric electrospinning fiber nozzle is achieved, and the drained cold air does not additionally increase cold air power; the drainage air duct is zigzag to reduce the air speed and wind power of cold air, and the diameter of fibers sprayed by the electrospinning fiber nozzle is prevented from being reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling devices, in particular to a cooling system for an SS non-woven fabric electrospun fiber nozzle. Background Art

[0002] SS non-woven fabric is a double-layer non-woven fabric, which is made of two layers of spunbond non-woven fabrics hot-pressed. During processing, a layer of spunbond non-woven fabric is first produced by melt spraying, and then the second layer of spunbond non-woven fabric is spun on the first layer of spunbond non-woven fabric. Finally, the finished SS non-woven fabric is made by hot pressing, cutting, and winding.

[0003] In the existing technology, the electrospinning fiber nozzle is usually used to spray downward, and the ejected fibers are cooled by the pressure-stabilizing side-blowing bellows on both sides. Generally, the electrospinning fiber nozzle is not cooled. However, during the production of SS non-woven fabrics, the electrospinning fiber nozzle works at a high intensity and is in constant contact with the high-temperature molten material, causing the electrospinning fiber nozzle to be at a relatively high temperature. If the electrospinning fiber nozzle is directly cooled, it will be detrimental to the ejection of the fibers. However, if the electrospinning fiber nozzle is not cooled, the ejected fibers will be highly liquefied at the moment, and their ability to withstand the tension generated by the blowing air will be reduced. Blowing air directly through the pressure-stabilizing side-blowing bellows will cause the fibers to be subjected to excessive tension, resulting in a reduction in diameter, and ultimately resulting in a thinner thickness of the SS non-woven fabric. Therefore, there are deficiencies. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a cooling and temperature reduction system for an SS non-woven electrospun fiber nozzle, which is used to achieve the purpose of cooling and temperature reduction of the SS non-woven electrospun fiber nozzle while ensuring that the diameter of the fiber sprayed by the electrospun fiber nozzle is qualified.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The cooling and temperature reduction system of the SS non-woven electrospun fiber nozzle includes a pressure-stabilizing side-blowing air box arranged on both sides below the nozzle body. The nozzle body includes a spinneret, and drainage air ducts are fixedly installed on both sides of the bottom of the spinneret. The drainage air duct includes a blowing groove located on the raised side of the bottom of the spinneret, a confluence groove fixedly connected to the bottom of the spinneret near the side, a folding channel arranged between the blowing groove and the confluence groove, and a converging air scoop located on the side of the confluence groove away from the blowing groove. The blowing groove, confluence groove, folding channel and converging air scoop are connected.

[0007] Preferably, the nozzle body further comprises a die head mounted on the top of the spinneret and a connecting pipe fixedly mounted on the top of the die head, and a heat insulating cover plate fixedly mounted above the spinneret is provided on the surface of the die head.

[0008] Preferably, the two drainage air ducts are symmetrically arranged on the left and right, and the two pressure-stabilizing side-blowing air boxes are symmetrically arranged on the left and right.

[0009] Preferably, the blowing slot, converging slot, folding channel and converging scoop of the diversion air duct are an integrated structure.

[0010] Preferably, the diversion air duct is located above one side of the air outlet of the pressure-stabilizing side blowing box, and the air inlet of the converging wind scoop is tilted and corresponds to one side of the air outlet of the pressure-stabilizing side blowing box.

[0011] Preferably, the blowing slot is arranged parallel to the raised side surface of the bottom of the spinneret.

[0012] Preferably, the folding channel is located inside the groove at the bottom of the spinneret, and the shape of the folding channel is adapted to the shape of the groove at the bottom of the spinneret.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The utility model installs a drainage duct under the spinneret of the nozzle body. The drainage duct draws a small amount of cold air from the blowing box on the pressure-stabilizing side through the converging wind scoop, flows upward into the folding channel through the converging groove, and then blows out the cold air downward along the protrusion at the bottom of the spinneret through the blowing groove. The folding channel cooled by the cold air exchanges heat with the air inside the groove at the bottom of the spinneret, and the blowing groove cooled by the cold air exchanges heat with the air around the protrusion at the bottom of the spinneret, so as to achieve the effect of cooling the SS non-woven fabric electrospun fiber nozzle. At the same time, the guided cold air blows and cools the sprayed fiber. Since the air is blown through the drainage duct, no additional cold air power is added, and the drainage duct is tortuous, which reduces the wind speed and wind force of the cold air, thereby avoiding the problem of reducing the diameter of the fiber sprayed from the electrospun fiber nozzle, so that the electrospun fiber nozzle sprays the fiber according to the predetermined parameters, ensuring that the diameter of the sprayed fiber is qualified. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structural layout of the utility model;

[0016] Figure 2 This is a side view of the overall structural layout of the utility model;

[0017] Figure 3 This is a cross-sectional view of the nozzle body and the drainage air duct of the utility model;

[0018] In the figure: 1. Nozzle body; 101. Spinneret; 102. Die head; 103. Connecting pipe; 104. Insulation cover; 2. Pressure-stabilizing side-blowing bellows; 3. Drainage air duct; 301. Blowing slot; 302. Bend channel; 303. Converging slot; 304. Converging wind scoop. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] like Figure 1-3 As shown, the utility model provides a technical solution: a cooling and temperature reduction system for an SS non-woven electrospun fiber nozzle, comprising a pressure-stabilizing side-blowing air box 2 arranged on both sides below a nozzle body 1, the two pressure-stabilizing side-blowing air boxes 2 being arranged symmetrically on the left and right, the nozzle body 1 comprising a spinneret 101, the nozzle body 1 further comprising a die head 102 mounted on the top of the spinneret 101 and a connecting pipe 103 fixedly mounted on the top of the die head 102, the surface of the die head 102 being provided with a heat-insulating cover plate 104 fixedly mounted above the spinneret 101;

[0021] Drainage ducts 3 are fixedly installed on both sides of the bottom of the spinneret 101. The two drainage ducts 3 are symmetrically arranged on the left and right. The drainage ducts 3 include a blowing slot 301 located on the raised side of the bottom of the spinneret 101, a converging slot 303 fixedly connected to the bottom of the spinneret 101 near the side, a folding channel 302 arranged between the blowing slot 301 and the converging slot 303, and a converging air scoop 304 located on the side of the converging slot 303 away from the blowing slot 301.

[0022] The blowing slot 301, the converging slot 303, the folding channel 302 and the converging air scoop 304 are interconnected. The blowing slot 301, the converging slot 303, the folding channel 302 and the converging air scoop 304 of the diversion air duct 3 are an integrated structure. The diversion air duct 3 is located above the air outlet side of the pressure-stabilizing side blowing box 2. The air inlet of the converging air scoop 304 is tilted and corresponds to the air outlet side of the pressure-stabilizing side blowing box 2. The blowing slot 301 is parallel to the raised side of the bottom of the spinneret 101. The folding channel 302 is located inside the bottom groove of the spinneret 101, and the shape of the folding channel 302 is adapted to the shape of the bottom groove of the spinneret 101.

[0023] Working principle:

[0024] By installing the drainage duct 3 under the spinneret 101 of the nozzle body 1, the drainage duct 3 draws a small amount of cold air from the pressure-stabilizing side blowing box 2 through the converging wind scoop 304, flows upward into the folding channel 302 through the converging groove 303, and then blows out the cold air downward along the protrusion at the bottom of the spinneret 101 through the blowing groove 301. The folding channel 302 cooled by the cold air exchanges heat with the air inside the groove at the bottom of the spinneret 101, and the blowing groove 301 cooled by the cold air exchanges heat with the air inside the groove at the bottom of the spinneret 101. The bottom bulge of the spinneret 101 exchanges heat with the surrounding air to cool the SS non-woven fabric electrospun fiber nozzle; the guided cold air blows and cools the ejected fibers. Since the air is blown through the drainage duct 3, no additional cold air power is added, and the drainage duct 3 is tortuous, which reduces the wind speed and wind force of the cold air, avoids causing excessive force on the fibers ejected by the electrospun fiber nozzle, avoids the problem of diameter reduction, and ensures that the electrospun fiber nozzle ejects fibers according to predetermined parameters, so that the ejected fiber diameter is qualified.

[0025] It should be noted that, in this document, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0026] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The cooling system of the SS non-woven electrospun fiber nozzle comprises a pressure-stabilizing side-blowing air box (2) arranged on both sides below the nozzle body (1), characterized in that: The nozzle body (1) includes a spinneret (101), and drainage air ducts (3) are fixedly installed on both sides of the bottom of the spinneret (101), and the drainage air ducts (3) include a blowing groove (301) located on the raised side of the bottom of the spinneret (101), a confluence groove (303) fixedly connected to the bottom of the spinneret (101) near the side, a folding channel (302) arranged between the blowing groove (301) and the confluence groove (303), and a converging air scoop (304) located on the side of the confluence groove (303) away from the blowing groove (301), and the blowing groove (301), the confluence groove (303), the folding channel (302) and the converging air scoop (304) are connected.

2. The SS non-woven fabric electrospun fiber nozzle cooling system according to claim 1, characterized in that: The nozzle body (1) further comprises a die head (102) mounted on top of the spinneret (101) and a connecting pipe (103) fixedly mounted on top of the die head (102); a heat insulating cover plate (104) fixedly mounted above the spinneret (101) is provided on the surface of the die head (102).

3. The SS non-woven fabric electrospun fiber nozzle cooling system according to claim 1, characterized in that: The two drainage air ducts (3) are symmetrically arranged on the left and right, and the two pressure-stabilizing side-blowing air boxes (2) are symmetrically arranged on the left and right.

4. The SS non-woven fabric electrospun fiber nozzle cooling system according to claim 1, characterized in that: The blowing slot (301), the converging slot (303), the folding channel (302) and the converging scoop (304) of the diversion air duct (3) are an integrated structure.

5. The SS non-woven fabric electrospun fiber nozzle cooling system according to claim 1, characterized in that: The drainage air duct (3) is located above one side of the air outlet of the pressure-stabilizing side blowing box (2), and the air inlet of the converging air scoop (304) is arranged obliquely and corresponds to one side of the air outlet of the pressure-stabilizing side blowing box (2).

6. The SS non-woven fabric electrospun fiber nozzle cooling system according to claim 1, characterized in that: The blowing slot (301) is arranged parallel to the raised side surface of the bottom of the spinneret (101).

7. The SS non-woven fabric electrospun fiber nozzle cooling system according to claim 1, characterized in that: The folding channel (302) is located inside the bottom groove of the spinneret (101), and the shape of the folding channel (302) is adapted to the shape of the bottom groove of the spinneret (101).

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