CN203782356U

CN203782356U - Spinning box

Info

Publication number: CN203782356U
Application number: CN201420080533.0U
Authority: CN
Inventors: 党中华; 周从民; 唐建海; 王仕飞
Original assignee: XINLONG HOLDING (GROUP) CO Ltd
Current assignee: Hunan Xinlong Nonwovens Co ltd; Xinlong Holdings Group Co ltd
Priority date: 2014-02-25
Filing date: 2014-02-25
Publication date: 2014-08-20
Anticipated expiration: 2024-02-25

Abstract

The utility model discloses a spinning box which comprises a spinning box body, wherein a spinneret plate is arranged in the spinning box body, a feed path is arranged on the upper part of the spinning box body and is communicated with the spinneret plate; air channels are formed in two sides of the spinning box body and are communicated with the spinneret plate; an air knife is arranged at the bottom of the spinneret plate, wherein a knife edge of the air knife has a radian, and the air knife is uniformly provided with spinneret holes. According to the spinning box disclosed by the utility model, the knife edge of the air knife on a melt-blown non-woven cloth production line has a radian, so that the flow of drafting air on two sides of an air seam and the flow speed are increased, and thus the drafting air speeds are consistent left and right so as to meet uniformity in filtering efficiency and filtering resistance of melt-blown non-woven cloth.

Description

Manifold

Technical field

The utility model belongs to the production field of textile industry non-weaving cloth, relates in particular to a kind of manifold of the air knife that comprises melt-blowing nonwoven production line.

Background technology

As shown in Figure 1 and Figure 2, be existing spinning manifold and air knife structure, its operation principle is: melt enters spinnerets 3 by material road 1 after measuring pump metering, by the micropore on spinnerets 3, is extruded; Drawing-off wind 2 enters spinning manifold from air channel, discharges, thereby reach the drawing-off effect to melt through the both sides spinneret orifice of air knife 4.

The quality of melt-blowing nonwoven is mainly reflected by filtration resistance and filter effect, impact filter effect and filtration resistance because have melt melt index, the hole diameter of spinneret, the many factors such as melt flow, spinning temperature, receiving range, air cleft width, drawing-off air temperature, drawing-off wind speed degree, analyses and comparison repeatedly through data, the index that filter effect and filtration resistance uniformity are had the greatest impact be air cleft width be spinneret orifice to the distance of the air knife edge of a knife, and in prior art, the width of air cleft is that left and right is consistent.

In prior art, drawing-off wind is to enter from the air channel at the two ends of spinning manifold, so drawing-off wind middle flow velocity when air cleft is discharged is large, two ends flow velocity is little, with regard to the drawing of fiber that caused melt-blowing nonwoven mid portion fully and two ends drawing-off is not enough, if two ends fiber reaches drawing-off requirement, the fiber of mid portion will produce flyings like this, affect into cloth quality, finally cause the filtration resistance of the melt-blowing nonwoven produced and filter effect present in the middle of the low phenomenon in high two ends.

Utility model content

The purpose of this utility model is to provide a kind of manifold, the edge of a knife setting of its air knife is a radian, can increase air cleft two ends drawing-off wind flow, improve flow velocity, thereby make drawing-off wind speed left and right consistent, with meet the filter effect of melt-blowing nonwoven and filtration resistance evenly.

In order to achieve the above object, the utility model provides a kind of manifold, described manifold includes spinning manifold, is provided with spinnerets in spinning manifold, and the top of spinning manifold arranges material road, described material road is communicated with spinnerets, the both sides of described spinning manifold are provided with air channel, and described air channel is communicated with spinnerets, and the bottom of described spinnerets is provided with air knife, the edge of a knife of described air knife is a radian setting, is evenly provided with spinneret orifice on described air knife.

Further, in the middle of described edge of a knife setting is, high two ends are low, and the vertical range that middle arc pushes up two ends line is 1.5 to 2.5mm.

Further, the vertical range that the middle arc of the described edge of a knife pushes up two ends line is 2mm.

Further, described air knife is screwed onto spinnerets bottom.

The melt-blowing nonwoven production line air knife of manifold provided by the utility model, by at the air knife edge of a knife, radian being set, increase the flow of air cleft two ends drawing-off wind, improve flow velocity, thereby make about drawing-off wind speed consistent, even to meet filter effect and the filtration resistance of melt-blowing nonwoven.

Accompanying drawing explanation

Fig. 1 is spinning manifold profile;

Fig. 2 is the air knife of prior art, and the edge of a knife is straight line;

Fig. 3 is the air knife of the utility model melt-blowing nonwoven production line, and the edge of a knife is camber line.

In figure, 1.Liao road, 2. air channel, 3. spinnerets, 4. air knife, the 5. edge of a knife, 6. spinneret orifice.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, so that those skilled in the art can better understand the utility model being implemented, but illustrated embodiment is not as to restriction of the present utility model.

As shown in Figure 1, Figure 3, for a kind of manifold and air knife structure thereof, manifold includes spinning manifold, and described spinning manifold includes spinnerets 3, and the top of spinning manifold arranges material road 1, described material road 1 is communicated with spinnerets 3, the both sides of described spinning manifold are provided with air channel 2, and described air channel 2 is communicated with spinnerets 3, and the bottom of described spinnerets 3 is provided with air knife 4, the edge of a knife 5 of described air knife 4 is a radian setting, on described air knife 4, is evenly provided with spinneret orifice.

Its operation principle, first, melt enters spinnerets 3 by material road 1 after measuring pump metering, by the micropore on spinnerets 3, is extruded, outside drawing-off wind 2 enters into spinning manifold and finally from the spinneret orifice 6 of air knife 4 both sides, discharges by spinnerets 3 from air channel, thereby reaches the drawing-off effect to melt.

But when spinneret orifice 6 is identical to the distance of air knife 4 edges of a knife 5, can cause filtration resistance and the filter effect of melt-blowing nonwoven to present the low phenomenon in middle high two ends, cause into the reduction of cloth quality, because drawing-off wind is to enter from the air channel 2 at the two ends of spinning manifold, when so drawing-off wind is discharged at spinneret orifice 6, middle flow velocity is large and the flow velocity at two ends is little, like this with regard to the drawing of fiber that caused melt-blowing nonwoven mid portion fully and the phenomenon of two ends drawing-off deficiency.

Generation for fear of the problems referred to above, the utility model is a radian setting by the edge of a knife of described air knife 45, make air knife 5 in process, produce radian, in the middle of the described edge of a knife 5 arranges and is, high two ends are low, preferably, in order to facilitate the installation of the edge of a knife 5, in the middle of the edge of a knife 5, to push up the vertical range of two ends line be 1.5 to 2.5mm to arcs.

In the specific implementation, as shown in Figure 3, the vertical range that the middle arc of the described edge of a knife 5 pushes up two ends line is 2mm, and described air knife 5 is adopted and is screwed in spinnerets 3 bottoms.Due to more bigger than two ends width in the middle of the edge of a knife 5, thereby increased the flow of two ends drawing-off wind, improved flow velocity, so, the flow velocity that drawing-off wind is discharged at all spinneret orifices 6 reaches consistent substantially, to the drawing-off of fiber, also can reach best effect, effectively avoid the low phenomenon of filter effect and the middle high two ends of filtration resistance.

The above embodiment is only the preferred embodiment for absolutely proving that the utility model is lifted, and protection domain of the present utility model is not limited to this.Being equal to that those skilled in the art do on the utility model basis substitutes or conversion, all within protection domain of the present utility model.Protection domain of the present utility model is as the criterion with claims.

Claims

1. a manifold, described manifold includes spinning manifold, in spinning manifold, be provided with spinnerets, the top of spinning manifold arranges material road, and described material road is communicated with spinnerets, the both sides of described spinning manifold are provided with air channel, described air channel is communicated with spinnerets, it is characterized in that, the bottom of described spinnerets is provided with air knife, the edge of a knife of described air knife is a radian setting, is evenly provided with spinneret orifice on described air knife.

2. manifold according to claim 1, is characterized in that, in the middle of described edge of a knife setting is, high two ends are low, and the vertical range that middle arc pushes up two ends line is 1.5 to 2.5mm.

3. manifold according to claim 2, is characterized in that, the vertical range that the middle arc of the described edge of a knife pushes up two ends line is 2mm.

4. manifold according to claim 1, is characterized in that, described air knife is screwed onto spinnerets bottom.