CN212175082U

CN212175082U - Melt-blown head

Info

Publication number: CN212175082U
Application number: CN202020651667.9U
Authority: CN
Inventors: 韩士兵
Original assignee: Changzhou Haoan Biological Technology Co ltd
Current assignee: Jiaxing How Sport Medical Instrument Co ltd
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2020-12-18
Anticipated expiration: 2030-04-26

Abstract

The utility model discloses a melt-blown head, which comprises a die head and a spray head extending into the die head, wherein a blowing channel is formed between the outer walls at two sides of the spray head and the inner walls at two sides of the die head; a material groove is arranged in the spray head; the top of the spray head is provided with a feed inlet communicated with the feed groove; the bottom of the spray head is provided with a plurality of rows of spray holes. The utility model is provided with a plurality of rows of spraying holes, and two adjacent rows of spraying holes are arranged in a staggered way, so that under the condition of the same flow, thinner fiber bundles can be obtained, the surface of a product can be more uniform and softer, even if one or more of the spraying holes in a certain row are blocked, the staggered holes can be sprayed with filaments, and the possibility of missed spraying is greatly reduced for the produced product; because the tows are in a moving state when being received, the rows of holes realize the sequential difference, double-layer or multi-layer auxiliary nets are also realized to a certain degree, the barrier rate and the air permeability are increased, and the quality of the product is greatly improved.

Description

Melt-blown head

Technical Field

The utility model belongs to the technical field of melt-blown cloth production technique and specifically relates to a melt-blown head.

Background

As an important ring for melt-blown non-woven fabric production, large-scale melt-blown equipment can realize the parallel arrangement of multiple nozzles, but as a general small-scale prototype in the market, a single-nozzle extrusion mode is adopted, the single-nozzle mode can realize the extrusion and filamentation processes of plastic master batches, but the defect of insufficient spinning uniformity exists, and in order to realize the flow matching, the diameter of a spinning hole needs to be increased sometimes. However, in the actual use process, the material groove and the spinneret orifice both have a certain length, so that in the pressure conduction and release process (spinneret), the middle pressure is strong, the edge pressure is small, and the unevenness of the product is formed.

Therefore, there is a need to design a meltblowing head to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a melt shower nozzle to the weak point of prior art.

Realize the utility model discloses the technical scheme of purpose is: a melt-blown head comprises a die head and a spray head extending into the die head, wherein a blowing channel is formed between the outer walls of two sides of the spray head and the inner walls of two sides of the die head; a material groove is formed in the spray head; the top of the spray head is provided with a feed inlet communicated with a feed groove; the bottom of the spray head is provided with a plurality of rows of spraying holes, and two adjacent rows of spraying holes are arranged in a staggered manner; and the bottom of the die head is provided with a discharge hole corresponding to the position of the material spraying hole.

The top surface of the trough is an inclined plane with a high middle part and two low sides; the feed inlet is communicated to the top of the feed groove.

The axes of the material spraying holes are all arranged at an included angle of 10-25 degrees with the vertical direction.

And two air inlets communicated with the air blowing channels are respectively arranged on the two side walls of the die head.

And a sealing gasket is arranged between the contact surfaces of the die head and the spray head.

By adopting the technical scheme, the utility model discloses following beneficial effect has: (1) the utility model is provided with a plurality of rows of spraying holes, and two adjacent rows of spraying holes are arranged in a staggered way, so that under the condition of the same flow, thinner fiber bundles can be obtained, the surface of a product can be more uniform and softer, even if one or more of the spraying holes in a certain row are blocked, the staggered holes can be sprayed with filaments, and the possibility of missed spraying is greatly reduced for the produced product; because the tows are in a moving state when being received, the rows of holes realize the sequential difference, double-layer or multi-layer auxiliary nets are also realized to a certain degree, the barrier rate and the air permeability are increased, and the quality of the product is greatly improved.

(2) The utility model discloses a top surface of silo is the low inclined plane of high both sides in the middle of, under the condition of same pressure, the cross-sectional area of silo both sides can diminish, pressure can increase this moment, can be to the produced unnecessary pressure of spinneret orifice direct face feed port in the middle of the offset, make the pressure of whole spinneret orifice be close to unanimously, thereby obtain the spinneret curtain of same horizontal plane, spout the effect and promote greatly, and under the condition of same pressure, the holding temperature after plastics melt is different, the flow rate is also different, general temperature is higher, mobility is stronger, the temperature is lower, it becomes slow to tend to flow more, form solid-state even; in whole hot feeding in-process, according to the difference of heating device emplacement position, the temperature in the silo also has slight difference, and feeding department is high in the middle of generally, and the back step-down that flows to both sides lets silo edge transversal map diminish gradually this moment, can effectively increase pressure, for the middle part, can realize the compensation effect of flow rate.

(3) The utility model discloses the axis in material spraying hole all is 10 ~ 25 contained angles setting with vertical direction, further promotes and spouts a silk effect.

(4) The utility model discloses be equipped with the air inlet in two intercommunication wind channels of blowing on the both sides wall of die head respectively to in the wind channel of blowing inside ventilate.

(5) The utility model discloses set up sealed the pad, can guarantee the leakproofness of contact between shower nozzle and the die head, improved the effect of blowing.

Drawings

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is given in conjunction with the accompanying drawings, in which

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is another perspective sectional view of the present invention.

The reference numbers in the drawings are:

the device comprises a die head 1, a discharge hole 1-1, an air inlet 1-2, a spray head 2, a trough 2-1, a feed inlet 2-2, a material spraying hole 2-3 and a blowing channel 3.

Detailed Description

(example 1)

Referring to fig. 1 to 3, a meltblowing head of this embodiment includes a die 1 and a nozzle head 2 extending into the die 1, and blowing passages 3 are formed between both side outer walls of the nozzle head 2 and both side inner walls of the die 1.

A material groove 2-1 is arranged in the spray head 2. The top of the spray head 2 is provided with a feed inlet 2-2 communicated with the feed trough 2-1. The bottom of the spray head 2 is provided with a plurality of rows of material spraying holes 2-3, and two adjacent rows of material spraying holes 2-3 are arranged in a staggered manner. The bottom of the die head 1 is provided with a discharge hole 1-1 corresponding to the position of the material spraying hole 2-3.

Further, the top surface of the trough 2-1 is an inclined plane with a high middle part and two low sides. The feed port 2-2 is communicated to the top of the material groove 2-1, under the condition of the same pressure, the cross sectional areas of the two sides of the material groove 2-1 can be reduced, the pressure can be increased at the moment, and the surplus pressure generated when the middle spinneret orifice directly faces the feed port can be offset, so that the pressure of the whole spinneret orifice is close to the consistency, the spinneret screens on the same horizontal plane are obtained, and the spinneret effect is greatly improved.

Furthermore, the axes of the material spraying holes 2-3 are arranged at an included angle of 10-25 degrees with the vertical direction, so that the spinning effect is further improved.

Furthermore, two air inlets 1-2 communicated with the air blowing channel are respectively arranged on two side walls of the die head 1 so as to facilitate air inlet in the air blowing channel 3.

Furthermore, a sealing gasket is arranged between the contact surfaces of the die head 1 and the spray head 2, and the sealing gasket is preferably a rubber gasket, so that the contact sealing performance between the die head 1 and the spray head 2 can be ensured, and the blowing effect is improved.

In the embodiment, a plurality of rows of spinneret orifices are arranged, and the spinneret orifices in two adjacent rows are arranged in a staggered manner, so that a thinner fiber bundle can be obtained under the condition of the same flow rate; therefore, the surface of the product is more uniform and softer. Even if one or more of the spinneret orifices in a certain row are blocked, the filaments can be sprayed out from the staggered orifices, so that the possibility of missed spray of the produced product is greatly reduced; when the tows are received, the tows are in a moving state, the row of holes realize sequential difference, double-layer or multi-layer auxiliary nets are also realized to a certain extent, and the barrier rate and the air permeability are increased; the quality can be greatly improved.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A meltblowing head (2) characterized by: comprises a die head (1) and a spray head (2) extending into the die head (1), and a blowing channel (3) is formed between the outer walls of two sides of the spray head (2) and the inner walls of two sides of the die head (1); a material groove (2-1) is arranged in the spray head (2); the top of the spray head (2) is provided with a feed inlet (2-2) communicated with a feed groove (2-1); a plurality of rows of material spraying holes (2-3) are formed in the bottom of the spray head (2), and two adjacent rows of material spraying holes (2-3) are arranged in a staggered mode; and discharge holes (1-1) are formed in the bottom of the die head (1) and correspond to the positions of the material spraying holes (2-3).

2. A meltblowing head (2) according to claim 1, characterized in that: the top surface of the trough (2-1) is an inclined plane with a high middle part and two low sides; the feed port (2-2) is communicated to the top of the trough (2-1).

3. A meltblowing head (2) according to claim 1, characterized in that: the axes of the material spraying holes (2-3) are arranged at an included angle of 10-25 degrees with the vertical direction.

4. A meltblowing head (2) according to claim 1, characterized in that: two air inlets (1-2) communicated with the air blowing duct are respectively arranged on two side walls of the die head (1).

5. A meltblowing head (2) according to claim 1, characterized in that: and a sealing gasket is arranged between the contact surfaces of the die head (1) and the spray head (2).