CN214529341U

CN214529341U - Cooling protection device for melt-blown fibers

Info

Publication number: CN214529341U
Application number: CN202120501694.2U
Authority: CN
Inventors: 江科
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-10
Filing date: 2021-03-10
Publication date: 2021-10-29
Anticipated expiration: 2031-03-10

Abstract

The utility model discloses a cooling protection device for melt-blown fiber, which relates to the technical field of melt-blown spinning, comprising a melt-blown die spinneret plate and a mesh belt receiving device arranged under the melt-blown die spinneret plate, wherein, both sides under the melt-blown die spinneret plate and both sides over the mesh belt receiving device are respectively and correspondingly provided with a first cooling component and a second cooling component, the second cooling component comprises a liquid nitrogen storage tank, melt-blown jet fiber is produced through the intersection part of the gas outlet ends of two hot air runners and the discharge end of a polymer solution runner, both sides of the spinneret plate are cooled by blowing, so that the melt-blown fiber can achieve better cooling effect, partial air can be isolated by adding nitrogen in the forming process from high temperature to low temperature of the melt-blown fiber, the filament bundle is prevented from being oxidized at the high temperature, and the permeation reaction of micro-molecular in the air and the filament forming surface is avoided, effectively protect the tows and improve the quality of the finished product of the melt-blown fiber.

Description

Cooling protection device for melt-blown fibers

Technical Field

The utility model relates to a melt-blown spinning technical field specifically is a melt-blown fiber cooling protection device.

Background

The melt-blown spinning technology is a non-woven fabric manufacturing process which heats and melts a melting high polymer, forms fibers under the action of high-speed airflow drafting, cools and shapes, and collects and winds the fibers.

The cooling device of the existing melt-blown spinning equipment adopts a refrigerator cold air system to blow from two sides of a spinneret plate to achieve the effect of cooling spinning fibers, or adopts cooling water sprayed and atomized from two sides of the spinneret plate to cool the melt-blown fibers, the traditional cooling shaping effect is poor, and the melt-blown fibers cannot be effectively protected, so that I can provide a melt-blown fiber cooling protection device.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a melt-blown fiber cooling protection device has solved traditional cooling and has stereotyped the relatively poor problem that just can't carry out effectual protection to melt-blown fiber of effect.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a cooling protection device for melt-blown fibers comprises a melt-blown die head spinneret plate and a mesh belt receiving device arranged right below the melt-blown die head spinneret plate, wherein a first cooling assembly and a second cooling assembly are respectively and correspondingly arranged on two sides right below the melt-blown die head spinneret plate and on two sides right above the mesh belt receiving device;

the second cooling assembly comprises a liquid nitrogen storage tank, one end of the liquid nitrogen storage tank is fixedly connected with a heat dissipation piece type liquid nitrogen vaporization device, the free end of the heat dissipation piece type liquid nitrogen vaporization device is fixedly connected with a nitrogen cold air outlet device, and a cold air outlet is formed in one end of the nitrogen cold air outlet device.

Preferably, two hot air channels are symmetrically arranged in the spinneret plate of the melt-blowing die head, and a polymer solution channel is arranged in the spinneret plate of the melt-blowing die head and positioned between the two hot air channels.

Preferably, an air draft device is arranged inside the mesh belt receiving device and is positioned right below the polymer solution flow channel.

Preferably, the air outlet ends of the two hot air flow passages and the discharge end of the polymer solution flow passage are converged together, and the melt-blown jet fibers are produced at the position where the air outlet ends of the two hot air flow passages and the discharge end of the polymer solution flow passage are converged.

Preferably, the first cooling assembly and the second cooling assembly are members with the same structure, and the opening direction of the cold air outlet faces the melt-blown jet fibers.

Advantageous effects

The utility model provides a melt blown fiber cooling protection device. Compared with the prior art, the method has the following beneficial effects:

the utility model provides a melt blown fiber cooling protection device, the position output that the terminal portion of crossing of the ejection of compact of giving vent to anger through two hot-air runners and polymer solution runner outputs melt-blown jet fiber, the spinneret both sides blow the cooling, can let melt-blown fiber reach better cooling effect, melt-blown fiber from high temperature to microthermal forming process, add nitrogen gas and can completely cut off partial air, prevent that the silk bundle from being oxidized when the high temperature, avoid the micro molecule in the air and the osmotic reaction on filamentation surface, effectively protect the silk bundle, promote melt-blown fiber's finished product quality.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of a second cooling assembly according to the present invention.

In the figure: 1. a spinneret of a melt-blowing die head; 2. a first cooling assembly; 3. a second cooling assembly; 31. a liquid nitrogen storage tank; 32. a heat sink type liquid nitrogen vaporization device; 33. a nitrogen and cold air outlet device; 34. a cold air outlet; 4. a mesh belt receiving device; 5. a hot air flow path; 6. a polymer melt flow channel; 7. an air draft device; 8. meltblown jet fibers.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: a cooling protection device for melt-blown fibers comprises a melt-blown die head spinneret plate 1 and a mesh belt receiving device 4 arranged right below the melt-blown die head spinneret plate 1, wherein a first cooling assembly 2 and a second cooling assembly 3 are respectively and correspondingly arranged right below two sides of the melt-blown die head spinneret plate 1 and right above the mesh belt receiving device 4, two hot air runners 5 are symmetrically arranged in a spinneret plate 1 of the melt-blowing die head, a polymer solution runner 6 is arranged in the position, located between the two hot air runners 5, in the spinneret plate 1 of the melt-blowing die head, an air exhaust device 7 is arranged in a mesh belt receiving device 4, the air exhaust device 7 is located right below the polymer solution runner 6, the air outlet tail ends of the two hot air runners 5 and the discharge tail ends of the polymer solution runner 6 are intersected together, and melt-blowing jet fibers 8 are produced at the position where the air outlet tail ends of the two hot air runners 5 and the discharge tail ends of the polymer solution runner 6 are intersected.

Referring to fig. 2, the second cooling assembly 3 includes a liquid nitrogen storage tank 31, one end of the liquid nitrogen storage tank 31 is fixedly connected with a fin-type liquid nitrogen vaporization device 32, a free end of the fin-type liquid nitrogen vaporization device 32 is fixedly connected with a nitrogen cold air outlet device 33, one end of the nitrogen cold air outlet device 33 is provided with a cold air outlet 34, the first cooling assembly 2 and the second cooling assembly 3 are members having the same structure, and an opening direction of the cold air outlet 34 faces the melt-blown jet fibers 8.

When the device is used, hot air and polymer melt are respectively injected into two hot air runners 5 and a polymer melt runner 6 in a spinneret plate 1 of a melt-blowing die head at the same time, a hot air source entering the spinneret plate 1 of the melt-blowing die head and the two hot air runners 5 is utilized to spray the polymer melt on the surface of a mesh belt receiving device 4, when the polymer melt is sprayed out from the polymer melt runner 6, liquid nitrogen in a liquid nitrogen storage tank 31 is converted into nitrogen through a radiating fin type liquid nitrogen vaporizing device 32, and then the nitrogen is blown out from a cold air outlet 34 through a nitrogen cold air outlet device 33, so that melt-blown fibers are cooled and protected.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a melt blown fiber cooling protection device, includes melt-blown die head spinneret (1) and sets up guipure receiving arrangement (4) directly under melt-blown die head spinneret (1), its characterized in that: a first cooling assembly (2) and a second cooling assembly (3) are respectively and correspondingly arranged on two sides right below the spinneret plate (1) of the melt-blowing die head and on two sides right above the mesh belt receiving device (4);

second cooling element (3) include liquid nitrogen holding vessel (31), the one end fixedly connected with fin formula liquid nitrogen vapourizing unit (32) of liquid nitrogen holding vessel (31), the free end fixedly connected with nitrogen gas cold wind air-out device (33) of fin formula liquid nitrogen vapourizing unit (32), cold wind air outlet (34) have been seted up to the one end of nitrogen gas cold wind air-out device (33).

2. A meltblown fiber cooling protector as set forth in claim 1 in which: two hot air runners (5) are symmetrically arranged in the spinneret plate (1) of the melt-blowing die head, and a polymer solution runner (6) is arranged in the spinneret plate (1) of the melt-blowing die head and positioned between the two hot air runners (5).

3. A meltblown fiber cooling protector as set forth in claim 1 in which: an air draft device (7) is arranged inside the mesh belt receiving device (4), and the air draft device (7) is located right below the polymer solution flow channel (6).

4. A meltblown fiber cooling protector as set forth in claim 2 in which: the air outlet ends of the two hot air flow passages (5) and the discharge ends of the polymer solution flow passages (6) are converged together, and melt-blown jet fibers (8) are produced at the position where the air outlet ends of the two hot air flow passages (5) and the discharge ends of the polymer solution flow passages (6) are converged.

5. A meltblown fiber cooling protector as set forth in claim 1 in which: the first cooling assembly (2) and the second cooling assembly (3) are components with the same structure, and the opening direction of the cold air outlet (34) faces the melt-blown jet fibers (8).