CN212316388U - Production device for melt-blown filter cloth - Google Patents
Production device for melt-blown filter cloth Download PDFInfo
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- CN212316388U CN212316388U CN202020168366.0U CN202020168366U CN212316388U CN 212316388 U CN212316388 U CN 212316388U CN 202020168366 U CN202020168366 U CN 202020168366U CN 212316388 U CN212316388 U CN 212316388U
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- guide plate
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Abstract
The production device of the melt-blown filter cloth comprises a melt-blown die head and a receiving device, wherein the receiving device comprises two roller assemblies, and a nozzle of the melt-blown die head faces to a gap between the two roller assemblies; the method is characterized in that: a first guide plate and a second guide plate are arranged at the nozzle of the melt-blowing die head, and the distance between the tail parts of the first guide plate and the second guide plate is larger than the distance between the roots of the first guide plate and the second guide plate, so that a relatively closed horn-shaped traction space is formed at the nozzle of the melt-blowing die head; and the roots of the first guide plate and the second guide plate are connected with the pivot of the melt-blowing die head, so that the included angle between the first guide plate and the second guide plate can be adjusted. The utility model discloses enable the inside fibre of product and present the solid and pile up, make the product have good air permeability (low resistance promptly) and reach promptly high-efficient filter core material index through static electret back and high-efficient filtration efficiency is more than or equal to 97%, can filter the viral particle of 0.1 micron.
Description
Technical Field
The utility model relates to a production facility of melt-blown filter cloth, this melt-blown filter cloth can be used to the filter core material of gauze mask and various filters.
Background
The filter element materials of the N95 respirator seen in the market are polypropylene PP melt-blown non-woven fabrics (hereinafter referred to as melt-blown filter fabrics), the melt-blown filter fabrics are bonded together by polypropylene superfine fibers in random distribution, and the random distribution of the fibers enables the melt-blown filter fabrics to have larger specific surface area and higher porosity.
The process of melt-blown filter cloth is to adopt high-speed hot air to draw polymer melt filaments extruded from spinneret orifices, thereby forming superfine fibers and collecting the superfine fibers on a plane screen or a roller, and simultaneously forming melt-blown non-woven cloth by self bonding.
As a filter material, it has been a research direction in the filter element industry to improve the filtration performance of melt-blown filter cloth to exceed the N95 standard, but it is known that the improvement of the filtration performance inevitably increases the filtration resistance, and both of them are a pair of spears.
In order to improve the filtration efficiency and not influence the filtration resistance too much, the electret static electricity needs to be increased, and in order to increase the static electricity to the maximum extent, the structural requirements of the melt-blown filter cloth are as follows: firstly, the fiber is fine and is required to be 1-2 microns; the two-fiber stack needs to be as random and three-dimensional as possible.
The existing production equipment for melt-blown filter cloth is mature and unchanged for years, and the main body of the equipment consists of a melt-blowing die head and a receiving device, wherein the melt-blowing die head comprises a melt placing assembly, a hot air generating assembly and the like, a spinneret orifice of the melt-blowing die head faces the receiving device, and the receiving device is divided into a plane screen curtain or a roller type. The existing roller receiver is mostly in a single-roller form, but a double-roller receiver is rarely available, and a melt-blown double-roller receiver of CN 103015043A is found in a patent publication, but the design purpose and the practical effect of the receiver are that two sides of the produced melt-blown cloth are flatter, the flatness of a cloth surface is improved, the three-dimensional research on fibers capable of improving the cloth surface by double-roller receiving is not carried out, and the design concept of the prior art is that the double-roller is used for simultaneously extruding the front side and the back side of the cloth surface, the cloth surface is pressed more tightly and flatter, and the method is in direct contact with the improvement of the three-dimensional performance of the fibers of the cloth surface.
Disclosure of Invention
The utility model aims at providing a melt and spout apparatus for producing of filter cloth makes the melt and spout filter cloth fiber structure of production mixed and disorderly, three-dimensional to this both promotes filtration efficiency and maintains low filtration resistance.
In order to achieve the above purpose, the utility model adopts the technical scheme that: the production device of the melt-blown filter cloth comprises a melt-blown die head and a receiving device, wherein the receiving device comprises two parallel roller assemblies which are arranged in parallel, and a nozzle of the melt-blown die head is arranged towards a gap between the two roller assemblies;
a first guide plate and a second guide plate are arranged at the nozzle of the melt-blowing die head, the length directions of the first guide plate and the second guide plate are both axially arranged along the center of the roller assembly, the first guide plate and the second guide plate are both symmetrical left and right by taking the nozzle as the center, and the distance between the tail parts of the first guide plate and the second guide plate is larger than the distance between the roots of the first guide plate and the second guide plate, so that a relatively closed horn-shaped traction space is formed at the nozzle of the melt-blowing die head;
and the roots of the first guide plate and the second guide plate are connected with the pivot of the melt-blowing die head, so that the included angle between the first guide plate and the second guide plate can be adjusted.
The relevant content in the above technical solution is explained as follows:
1. in the above scheme, the first guide plate and the second guide plate are provided with angle adjusting mechanisms.
2. In the scheme, the two roller assemblies are arranged on the lifting platform through the bearing slide rail, the direction of the bearing slide rail is the same as the connecting line direction of the two roller assemblies, and the distance between the two roller assemblies and the distance from the roller assemblies to the nozzle can be adjusted.
3. In the scheme, the roller assembly consists of a roller framework, a rotary screen and a suction air pipe, the suction air pipe is fixed relative to the device frame, the roller framework is movably sleeved on the suction air pipe, and a suction air port is formed in the suction air pipe; the roller framework and the transmission variable frequency motor drive the roller framework to rotate; the rotary screen is a cylindrical body provided with meshes, and is fixedly coated on the drum framework; the suction air pipe is connected with a variable-frequency suction fan through a pipeline, and an air suction system is formed in the roller.
Because of the application of the technical scheme, compared with the prior art, the utility model have following advantage and effect:
because the utility model discloses the guide plate has been increased, and adopt the receiving arrangement of twin drum, first guide plate and second guide plate form the relatively inclosed space of pulling in the nozzle department of melt-blown die head, in operation, when hot-air and fuse-element got into first guide plate and second guide plate clearance, because this local space is narrow and be the tubaeform direction, form the relatively inclosed space D of pulling in this section, the wind speed that should pull space D is forced after being compressed to accelerate, and should pull space D and be relatively inclosed, make this regional temperature kept (descend slowly), the fuse-element is by high-speed hot gas flow draft into fibre in this pulls space D, lead out after pulling space D as the fibre immediately by surrounding air 27, 28 cools off, and continue directive receiving arrangement. At this time, the two roller assemblies of the receiving device rotate in the opposite directions, and the air is sucked in the rollers, so that the melt-blown fibers are diffused on the rollers to a certain extent, and fiber accumulation from thin to thick is formed in the two sides of the two rollers towards the middle, as shown in the figure, the area A, B is in a thin state, the fiber accumulation is the most in the area C, and the fiber accumulation is converged along with the rotation of the roller assemblies to output melt-blown filter cloth, the fiber layer in the thin state in the area A, B is in direct adsorption contact with the surfaces (namely, the cylinder surfaces) of the two roller assemblies, the fiber layer in the area A, B is a surface layer after being formed into cloth, the fibers accumulated in the middle area C are a middle part of the cloth after being formed into cloth, and the V-shaped gap in the area C can gradually reduce the fibers accumulated in the two sides from the V-shaped large opening to present a three-dimensional shape, so that the three-dimensional arrangement of the melt-blown filter cloth is improved, the test index can even reach the level of N96 (the filtration efficiency is more than or equal to 96 percent), and the filtration resistance (or called respiratory resistance) is lower (the respiratory resistance is less than or equal to 29mm H)2O）。
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of a first baffle (or a second baffle) of the present invention;
FIG. 3 is a schematic front view of the receiver;
FIG. 4 is a left side schematic view of FIG. 3;
fig. 5 is an exploded view of the roller assembly of the present invention.
In the above drawings: 1. a melt-blowing die; 11. a nozzle; 2. a receiving device; 21. a roller assembly; 211. a drum framework; 212. a cylinder mould; 213. a suction air duct; 2131. a suction tuyere; 22. a roller wall plate; 23. a load bearing slide rail; 24. a lifting platform; 3. a first baffle; 31. a pivot; 4. a second baffle; 41. a pivot; 5. an angle adjusting mechanism; 51. a deflector adjustment lever; 52. fixing the blocking part; A. an area; B. an area; C. an area; D. a traction space.
Detailed Description
The invention will be further described with reference to the following drawings and examples:
example (b): referring to figures 1-5:
a production device of melt-blown filter cloth comprises a melt-blown die head 1 and a receiving device 2, which are core parts of melt-blown filter cloth production and can actually comprise subsequent additional parts such as a coiling device and the like so as to coil the produced melt-blown filter cloth again.
Referring to fig. 1, the receiving device 2 includes two roller assemblies 21 arranged in parallel, and the nozzle of the meltblowing die 1 is arranged toward the gap between the two roller assemblies 21.
Referring to fig. 1, a first guide plate 3 and a second guide plate 4 are arranged at a nozzle 11 of the melt-blowing die head 1, the first guide plate 3 and the second guide plate 4 are both axially arranged along the center of the roller assembly 21 in the length direction, the first guide plate 3 and the second guide plate 4 are both bilaterally symmetrical with the nozzle 11 as the center, and the distance between the tails of the first guide plate 3 and the second guide plate 4 is greater than the distance between the roots of the first guide plate 3 and the second guide plate 4, so that a relatively closed horn-shaped traction space D is formed at the nozzle 11 of the melt-blowing die head 1.
Furthermore, referring to fig. 1, the roots of the first baffle 3 and the second baffle 4 are pivotally connected to the meltblowing die 1, so that the included angle between the first baffle 3 and the second baffle 4 can be adjusted.
Specifically, as shown in fig. 2, the first baffle 3 and the second baffle 4 are strip-shaped plate bodies with arc-shaped cross sections, through holes through which pivots penetrate are arranged on the edges of the root portions of the first baffle 3 and the second baffle 4, and pivots 31 or 41 penetrate through the through holes. In practice, the first baffle 3 and the second baffle 4 may be flat plates, and the cross section may be any shape.
The first guide plate 3 and the second guide plate 4 are provided with angle adjusting mechanisms 5, and the angle adjusting mechanisms 5 can be various existing adjusting mechanisms, and can be manual adjusting mechanisms or automatic adjusting mechanisms. As shown in the figure, the air guide plate adjusting device is composed of an air guide plate adjusting rod 51 and a fixing blocking part, the air guide plate adjusting rod 51 is fixed on the first air guide plate 3 and the second air guide plate 4, and the tail end of the air guide plate adjusting rod 51 is positioned in multiple gears through the fixing blocking part 52 and can be switched and adjusted.
Specifically, the melt-blowing die head 1 comprises a melt placing assembly, a hot air generating assembly and the like, wherein the melt placing assembly of the melt-blowing die head 1 contains melt, and the melt is fed into the melt placing assembly by a feeding and pressurizing device and is extruded; the hot air generating assembly includes a hot air channel surrounding the outer periphery of the melt ejection opening of the melt placement assembly, and the hot air channel is connected to a hot air supply device to provide hot air at a temperature and pressure. The above-mentioned feeding and pressurizing devices and the hot air supplying device are all the prior art and will not be described herein.
Referring to fig. 3-4, the receiving device 2 includes a roller wall panel 22, a load-bearing rail 23, a lifting platform 24, etc., in addition to two roller assemblies 21. The two roller assemblies 21 are arranged on respective roller wall boards 22, the lower part of each roller wall board 22 is arranged on a lifting platform 24 through a bearing slide rail 23, the direction of the bearing slide rail 23 is the same as the connecting line direction of the two roller assemblies 21, and the distance between the two roller assemblies 21 and the distance from the roller assemblies 21 to the nozzle 11 can be adjusted.
Referring to fig. 3-5, the drum assembly 21 comprises a drum frame 211, a cylinder 212 and a suction air pipe 213, the suction air pipe 213 is fixed relative to the apparatus frame, the drum frame 211 is movably sleeved on the suction air pipe 213, and a suction air port 2131 is provided on the suction air pipe 213. The roller framework 211 and a transmission variable frequency motor (shown in the figure) drive the roller framework to rotate; the circular net 212 is a cylinder with meshes, and the circular net 212 is fixedly wrapped on the roller framework 211; the suction air pipe 213 is connected to a frequency-variable suction fan (not shown) via a pipe, and forms an air suction system inside the drum.
When the device works, when hot air and melt enter a gap between the first guide plate 3 and the second guide plate 4, because the local space is narrow and is guided in a horn shape, a relatively closed traction space D is formed in the section, the wind speed of the traction space D is forcibly accelerated after being compressed, and the traction space D is relatively closed, so that the temperature of the area is kept (slowly reduced), the melt is drawn into fibers by high-speed hot air flow in the traction space D, and the fibers are immediately cooled by ambient air after passing out of the traction space D and continuously shot to a receiving device. At this time, the two roller assemblies 21 of the receiving device rotate in the opposite directions, and the air is sucked in the rollers, so that the melt-blown fibers are diffused on the rollers to a certain extent, and thus fiber piles from thin to thick are formed in the two sides of the double rollers towards the middle, as shown in the figure, the area A, B is in a thin state, the fiber is accumulated most in the area C, and is gathered and output to form melt-blown filter cloth along with the rotation of the roller assemblies 21, the fiber layer in the thin state in the area A, B is directly adsorbed and contacted with the surfaces of the two roller assemblies 21 (namely the surface of the cylinder mould 212), the fiber layer of region A, B is the surface layer after being laid, while the fibers accumulated in the middle region C are the middle portion of the cloth after being laid, and the V-shaped gap at the area C can gradually reduce the fibers accumulated at two sides from the V-shaped large opening to present a three-dimensional shape, so that the three-dimensional arrangement of the fibers of the melt-blown filter cloth is improved. In the embodiment, the fineness of the melt spinning can be finely adjusted by adjusting the guide plate, and the distance between the rollers can be adjusted (0.5-2 MM) according to the gram weight of the finished cloth, so that the finished cloth has flat and smooth double surfaces, internal fibers are three-dimensionally stacked, the air permeability is good (namely, the resistance is low), the indexes of the high-efficiency filter core material after electrostatic electret are high, namely, the high-efficiency filter effect is more than or equal to 96 percent, and virus particles of 0.1 micron can be filtered.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (4)
1. The production device of the melt-blown filter cloth comprises a melt-blown die head and a receiving device, wherein the receiving device comprises two parallel roller assemblies which are arranged in parallel, and a nozzle of the melt-blown die head is arranged towards a gap between the two roller assemblies; the method is characterized in that:
a first guide plate and a second guide plate are arranged at the nozzle of the melt-blowing die head, the length directions of the first guide plate and the second guide plate are both axially arranged along the center of the roller assembly, the first guide plate and the second guide plate are both symmetrical left and right by taking the nozzle as the center, and the distance between the tail parts of the first guide plate and the second guide plate is larger than the distance between the roots of the first guide plate and the second guide plate, so that a relatively closed horn-shaped traction space is formed at the nozzle of the melt-blowing die head;
and the roots of the first guide plate and the second guide plate are connected with the pivot of the melt-blowing die head, so that the included angle between the first guide plate and the second guide plate can be adjusted.
2. A device for producing a melt-blown filter cloth according to claim 1, wherein: and the first guide plate and the second guide plate are provided with angle adjusting mechanisms.
3. A device for producing a melt-blown filter cloth according to claim 1, wherein: the two roller assemblies are arranged on a lifting platform through a bearing slide rail, the direction of the bearing slide rail is the same as the connecting line direction of the two roller assemblies, and the distance between the two roller assemblies and the distance from the roller assemblies to the nozzle can be adjusted.
4. A device for producing a melt-blown filter cloth according to claim 1, wherein: the rotary drum assembly consists of a rotary drum framework, a rotary screen and a suction air pipe, the suction air pipe is fixed relative to the device frame, the rotary drum framework is movably sleeved on the suction air pipe, and a suction air port is arranged on the suction air pipe; the roller framework and the transmission variable frequency motor drive the roller framework to rotate; the rotary screen is a cylindrical body provided with meshes, and is fixedly coated on the drum framework; the suction air pipe is connected with a variable-frequency suction fan through a pipeline, and an air suction system is formed in the roller.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020168366.0U CN212316388U (en) | 2020-02-13 | 2020-02-13 | Production device for melt-blown filter cloth |
| AU2020100846A AU2020100846B4 (en) | 2020-02-13 | 2020-05-26 | A production device of melt blown filter fabric |
| JP2020002054U JP3227630U (en) | 2020-02-13 | 2020-06-01 | Melt blow filter cloth production equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020168366.0U CN212316388U (en) | 2020-02-13 | 2020-02-13 | Production device for melt-blown filter cloth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212316388U true CN212316388U (en) | 2021-01-08 |
Family
ID=71132001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020168366.0U Active CN212316388U (en) | 2020-02-13 | 2020-02-13 | Production device for melt-blown filter cloth |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3227630U (en) |
| CN (1) | CN212316388U (en) |
| AU (1) | AU2020100846B4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113215726A (en) * | 2021-05-11 | 2021-08-06 | 陈跃玉 | Intelligent non-woven fabric melt-blowing machine and non-woven fabric production process |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11958308B1 (en) | 2023-05-31 | 2024-04-16 | G13 Innovation In Production Ltd | Thermal paper, and methods and systems for forming the same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996037644A2 (en) * | 1995-05-25 | 1996-11-28 | Minnesota Mining And Manufacturing Company | Undrawn, tough, durably melt-bondable, macrodenier, thermoplastic, multicomponent filaments |
| US6799957B2 (en) * | 2002-02-07 | 2004-10-05 | Nordson Corporation | Forming system for the manufacture of thermoplastic nonwoven webs and laminates |
| ATE502141T1 (en) * | 2007-01-31 | 2011-04-15 | Oerlikon Textile Gmbh & Co Kg | METHOD AND DEVICE FOR SUCTION AND DEPOSITION OF MULTIPLE FIBERS TO FORM A NON-WOVEN MATERIAL |
| WO2013160134A1 (en) * | 2012-04-27 | 2013-10-31 | Oerlikon Textile Gmbh & Co. Kg | Method and device for melt-blowing, forming and plaiting finite fibres to produce a fibrous nonwoven |
-
2020
- 2020-02-13 CN CN202020168366.0U patent/CN212316388U/en active Active
- 2020-05-26 AU AU2020100846A patent/AU2020100846B4/en not_active Ceased
- 2020-06-01 JP JP2020002054U patent/JP3227630U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113215726A (en) * | 2021-05-11 | 2021-08-06 | 陈跃玉 | Intelligent non-woven fabric melt-blowing machine and non-woven fabric production process |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2020100846A4 (en) | 2020-07-02 |
| AU2020100846B4 (en) | 2021-04-01 |
| JP3227630U (en) | 2020-09-10 |
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