CN111472097B - Melt-blown strand preparation device and preparation method thereof - Google Patents
Melt-blown strand preparation device and preparation method thereof Download PDFInfo
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- CN111472097B CN111472097B CN202010276147.9A CN202010276147A CN111472097B CN 111472097 B CN111472097 B CN 111472097B CN 202010276147 A CN202010276147 A CN 202010276147A CN 111472097 B CN111472097 B CN 111472097B
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- conveyor belt
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/56—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/04—Supporting filaments or the like during their treatment
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/04—Supporting filaments or the like during their treatment
- D01D10/0409—Supporting filaments or the like during their treatment on bobbins
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D4/00—Spinnerette packs; Cleaning thereof
- D01D4/02—Spinnerettes
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D4/00—Spinnerette packs; Cleaning thereof
- D01D4/02—Spinnerettes
- D01D4/025—Melt-blowing or solution-blowing dies
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
- D06H7/00—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
- D06H7/00—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials
- D06H7/22—Severing by heat or by chemical agents
- D06H7/221—Severing by heat or by chemical agents by heat
Abstract
The invention discloses a melt-blown strand preparation device and a preparation method thereof, wherein the preparation method comprises the following steps: a melt-blowing nozzle, a conveyor belt, a tightening groove connected with the conveyor belt, and collecting mechanisms at two sides of the conveyor belt, the tightening groove is positioned at the tail end of the conveying direction of the conveying belt, the tightening groove is a conical groove body, the surrounding range of the tightening groove body is gradually enlarged on a melt-blown material conveying line, a complete enclosure is formed at the end of the conveying direction of the melt-blown material, the tightening slot is provided with a pressure sensor at the end of the conveying direction of the melt-blown material, the measuring direction of the pressure sensor faces to the material spreading surface of the tightening groove, the collecting mechanism consists of a collecting plate and a collecting wheel, the collection mechanism is provided with a plurality of collection wheels with different sizes on each side, and the collection wheels are positioned on one side of the collection plate close to the conveyor belt.
Description
Technical Field
The invention relates to the field of environment-friendly wire-wound filter elements, can be used for filtering gas-liquid two-phase substances, and particularly relates to a melt-blown wire material preparation device and a preparation method thereof.
Background
The thread-wound filter element is formed by precisely winding textile fiber yarns with good filtering performance on a porous framework. The yarn material comprises polypropylene fiber, acrylic fiber, absorbent cotton fiber and the like. During winding, the filter cores with different precisions can be manufactured by controlling the winding tightness and the density of the yarns.
The thread-wound filter element is a deep filter element for low-viscosity and low-impurity filtering, and is made up by using textile fibre thread (polypropylene fibre thread, degreased cotton thread, etc.) and precisely winding them on the porous skeleton (polypropylene or stainless steel) according to a certain preparation process, and has the cellular structure with sparse outer portion and dense inner portion, and can effectively remove the impurities of suspended matter, microparticle and rust, etc. from fluid.
The good wire winding formula filter core of wire winding can demonstrate the filter effect of degree of depth type filter media, and ideal condition is by outer and more closely knit, consequently when the wire winding, must control the density of filter media with the thickness of wire rod or with the wire winding tension of difference, has the wire winding filter core of this kind of close structure of dredging outward in, just can have the degree of depth effect of degree of depth type filter media, and effectual promotion filterable efficiency intercepts more dirty miscellaneous particles. The filtering precision of the winding type filter material is determined by the thickness of the wire rods and the winding density, the thinner the wire rods are, the closer the wire rods can be, the smaller the pores are, and the higher the precision is; similarly, the denser the wire structure, the higher the filtration accuracy will be. However, the filter must maintain its specific structure and pore size during the filtration process to provide stable and uniform filtration quality.
However, most of winding filter elements are formed by winding fiber yarns, the dirt and impurity particles can be intercepted only through extrusion among the fiber yarns, the yarns have no independent filtering capacity, the melt-blown yarns with strong dirt-removing capacity prepared by the method replace the fiber yarns, and the filtering capacity of the winding filter elements is greatly improved.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides a melt-blown strand preparation device and a preparation method thereof.
In order to achieve the purpose, the invention adopts the technical scheme that: a melt-blown strand preparation device and a preparation method thereof comprise the following steps: melt spout nozzle and conveyer belt, with the tightening groove that the conveyer belt is connected, and the collection mechanism of conveyer belt both sides, tightening groove is located conveyer belt direction of transfer is terminal, tightening groove is a cone cell body, tightening groove cell body surrounding range is gradually big on melt-blown material transfer route, forms a complete encirclement at melt-blown material direction of transfer end, tightening groove is equipped with pressure sensor at melt-blown material direction of transfer end, pressure sensor measurement direction orientation tightening groove stone one side, collection mechanism comprises collecting plate and collection wheel, each side of collection mechanism is equipped with a plurality of not of uniform size respectively the collection wheel, the collection wheel is located the collecting plate is close to conveyer belt one side.
In a preferred embodiment of the invention, the collecting plate faces one side of the melt-blown nozzle, and the heating wire is arranged close to the conveyor belt, so that the melt-blown material on the collecting plate can be melted and separated from the melt-blown material on the conveyor belt.
In a preferred embodiment of the invention, the collecting wheel is close to the collecting plate, the collecting wheel is axially parallel to the collecting plate, the surface of the collecting wheel is provided with a convex cutting edge, and the cutting edge is contacted with the collecting plate when the collecting wheel rotates.
In a preferred embodiment of the invention, the collecting plate is hinged with the conveyor belt, and the included angle between the collecting plate and the conveyor belt on the spreading side ranges from 80 degrees to 180 degrees.
In a preferred embodiment of the invention, the collector plate is smooth and the meltblown material does not stick to the collector plate.
In a preferred embodiment of the present invention, the collecting wheel is located at the bottom of the collecting plate, and the meltblown material on the collecting plate falls naturally on the collecting wheel after falling off.
In a preferred embodiment of the invention, the number of cutting edges on each collection wheel is the same.
In a preferred embodiment of the invention, the length of the collection wheel is the same as the length of the collection plate.
In a preferred embodiment of the invention, the collection surface of the collection plate is parallel to the direction of transport of the conveyor belt.
The invention also provides a preparation method of the melt-blown strand, which is characterized by comprising the following steps:
(1) the melt-blown nozzle sprays out conical melt-blown materials, the conical central area melt-blown materials fall on the conveying belt, and the conical edge area melt-blown materials fall on collecting mechanisms on two sides of the conveying belt.
(2) The hot wire on the collecting plate melts and cuts off the melt-blown materials, the collecting wheel is started, the cutting edge on the collecting wheel cuts the melt-blown materials on the collecting wheel and the collecting plate into strips, the strip-shaped melt-blown materials fall on the melt-blown fabric on the conveying belt and are tightened and rolled into threads by the tightening groove along the conveying direction.
(3) The tightening groove is conical, the force applied to the melt-blown material is larger and larger along with the conveying direction, the pressure sensor at the tail end of the tightening groove measures the extrusion stress of the coiled melt-blown wire material to the groove wall of the tightening groove, so that the compaction degree of the interior of the melt-blown wire material is obtained, the pressure sensor feeds data back to the collecting mechanism and the melt-blown nozzle, and the melt-blown nozzle adjusts the spraying height according to the extrusion stress, so that the distribution of titer on the conveying belt and the collecting mechanism is changed; the gathering mechanism actuates gathering wheels of different sizes to vary the size of the meltblown strand cut by the gathering wheels.
The invention also provides a melt-blown strand which is characterized in that: the melt-blown thread material is of a solid structure, the outermost layer of the melt-blown thread material is wrapped by a layer of complete melt-blown fabric, the inner layer of the melt-blown thread material is a plurality of strip-shaped melt-blown materials, the melt-blown thread material is formed by extrusion, is compact in inside and strong in filtering capacity in the diameter direction, and can be directly wound and collected to form the winding filter element.
The invention also provides a nozzle with controllable spray width, which comprises: the melt-blown material cavity surrounds the air jet ports on the periphery of the melt-blown material cavity, and is characterized in that: the air jet path of the air jet is intersected with the outflow path of the melt-blown material, the jetted air flow drives the melt-blown material to be scattered on the conveying belt, and the air jet direction of the air jet is adjustable.
In a preferred embodiment of the present invention, the discharge port of the melt-blowing nozzle is a long strip, and the length direction of the melt-blowing nozzle is parallel to the conveying direction of the conveyor belt.
In a preferred embodiment of the invention, the air jets are angled from the discharge path of the meltblown material in the range of 10 ° to 80 °, the greater the angle, the greater the width of the meltblown material on the belt.
The invention solves the defects in the background technology, and has the following beneficial effects:
(1) according to the invention, the tightening groove is conical, the inner diameter of the tightening groove is gradually reduced in the conveying direction, the force applied to the melt-blown material is gradually increased along with the conveying direction, so that the diameter of the melt-blown material is gradually reduced until the melt-blown material becomes a wire material, the extrusion stress of the coiled melt-blown wire material to the groove wall of the tightening groove is measured by the pressure sensor at the tail end of the tightening groove, so that the compaction degree of the interior of the melt-blown wire material is obtained, the pressure sensor feeds data back to the collecting mechanism and the melt-blown nozzle, and the feedback mechanism can timely feed back and adjust the previous process according to the condition of the wire material product.
The spray height of the melt-blown nozzle is adjusted according to the extrusion stress, so that the distribution of the titer on the conveyor belt and the collecting mechanism is changed;
the collecting mechanism starts collecting wheels with different diameters according to the magnitude of the extrusion stress, the number of cutting edges on each collecting wheel is the same, the widths of the strip-shaped melt-blown materials cut by the collecting wheels with different diameters are different, and the mechanism adjusts the compaction degree of the melt-blown thread materials by adjusting the degree that the internal gaps of the melt-blown thread materials can be compressed;
the melt-blown nozzle and the collecting mechanism are matched and adjusted, so that the compaction range of melt-blown yarns is expanded, and the device can produce more types of melt-blown yarns.
(2) According to the invention, the heating wire is arranged at the position of the collecting plate close to the conveyor belt, the melt-blown material sprayed by the melt-blown nozzle on the collecting plate and the conveyor belt is integrated, after the melt-blown material is heated by the heating wire, the melt-blown material is fused at the junction of the conveyor belt and the collecting plate, the melt-blown material on the conveyor belt is continuously conveyed and curled to form the outer surface of the melt-blown wire, and the edge of the outer surface is; because the collecting wheel is located the collecting plate and is close to conveyer belt one end, and the collecting plate is smooth and does not have the melt-blown material of residue, so melt-blown material on the collecting plate is most to fall into collecting wheel and collecting plate clearance, and the collecting wheel is the strip with melt-blown material cutting, has avoided melt-blown material not to drop or has fallen the condition outside the collecting wheel.
(3) The tightening groove is a conical groove body, the circumferential range surrounded by the tightening groove body is gradually enlarged on the melt-blown material conveying line, and complete circumferential surrounding is formed at the tail end of the melt-blown material conveying direction, so that the melt-blown fabric at the outermost layer can be rolled into a complete ring shape, the surface of the melt-blown fabric on the outer layer is smooth, and strip-shaped filling materials in the melt-blown fabric can be properly wrapped to avoid leakage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts;
FIG. 1 is a perspective block diagram of a preferred embodiment of the present invention;
FIG. 2 is a block diagram of the collection mechanism of the preferred embodiment of the present invention;
FIG. 3 is a block diagram of a meltblown nozzle in accordance with a preferred embodiment of the present invention;
in the figure: 1. a conveyor belt; 2. tightening the groove; 21. a pressure sensor; 3. a collection mechanism; 31. a collection plate; 32. a collection wheel; 321. a cutting edge; 33. an electric heating wire; 34. a hinge; 4. a melt-blown nozzle; 41. a melt-blown material chamber; 42. and (4) an air outlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.
As shown in fig. 1, a melt-blown strand preparation apparatus and a preparation method thereof include: melt spout nozzle 4 and conveyer belt 1, the tightening groove 2 of being connected with conveyer belt 1, and the collection mechanism 3 of 1 both sides of conveyer belt, tightening groove 2 is located 1 direction of transfer end of conveyer belt, tightening groove 2 is a toper cell body, 2 cell body surrounding areas of tightening groove gradually enlarge on melt-blown material transfer route, form a complete encirclement at melt-blown material direction of transfer end, tightening groove 2 is equipped with pressure sensor 21 at melt-blown material direction of transfer end, pressure sensor 21 measuring direction is towards tightening groove 2 stone one side, collection mechanism 3 comprises collecting plate 31 and collecting wheel 32, 3 every sides of collection mechanism are equipped with a plurality of collecting wheel 32 that differ in size respectively, collecting wheel 32 is located collecting plate 31 and is close to 1 one side of conveyer belt.
The collecting plate 31 faces one side of the melt-blown nozzle 4, and the position close to the conveyor belt 1 is provided with the heating wire 33, so that the melt-blown material on the collecting plate 31 and the melt-blown material on the conveyor belt 1 can be melted and separated, the melt-blown material sprayed on the collecting plate 31 and the melt-blown material on the conveyor belt 1 are integrated by the melt-blown nozzle 4, after the melt-blown material is heated by the heating wire 33, the melt-blown material is melted at the junction of the conveyor belt 1 and the collecting plate 31, the melt-blown material on the conveyor belt 1 is continuously conveyed and curled to form; since the collecting wheel 32 is located at one end of the collecting plate 31 close to the conveyor belt 1, and the collecting plate 31 is smooth and has no residual meltblown material, most of the meltblown material on the collecting plate 31 falls in the gap between the collecting wheel 32 and the collecting plate 31, the cutting edge 321 of the collecting wheel 32 contacts the collecting plate 31 to cut the meltblown material into strips, the strips of meltblown material continuously fall on the meltblown fabric of the conveyor belt 1 and are extruded by the tightening slot 2 to form the inner material of the meltblown thread, it should be appreciated that the collecting plate 31 faces the side of the meltblown nozzle 4, other devices can be arranged close to the conveyor belt 1 instead of the heating wire 33, it is only necessary to cut the meltblown material at the interface between the collecting plate 31 and the conveyor belt 1, such as a cutting knife, in the preferred embodiment of the present invention, the heating wire 33 is located at the interface between the collecting plate 31 and the conveyor belt 1, it should be appreciated that the position of the heating wire, when the diameter of the needed melt-blown thread material is larger, the height of the electric heating wire 33 should be adjusted like being far away from the position of the conveyor belt 1, so that the situation that the fabric on the conveyor belt 1 cannot form a complete enclosure when being wound to the tail end of the tightening groove 2 for discharging is avoided; on the contrary, when the diameter of the melt-blown strand is small, the heating wire 33 should be adjusted as close to the belt 1, and may be provided on the groove wall of the take-up groove 2 as necessary.
As shown in fig. 1, in the pressure sensor 21 according to the preferred embodiment of the present invention, the tightening slot 2 is tapered in the embodiment, the inner diameter is gradually reduced in the conveying direction, the force applied to the melt-blown material is increased along with the conveying direction, the pressure sensor 21 at the end of the tightening slot 2 measures the extrusion stress of the compacted melt-blown strand to the slot wall of the tightening slot 2, so as to obtain the compaction degree of the inside of the melt-blown strand, and the pressure sensor 21 feeds back data to the collecting mechanism 3 and the melt-blown nozzle 4;
the spray height of the melt-blown nozzle 4 is adjusted according to the extrusion stress, so that the distribution of the fiber number on the conveyor belt 1 and the collecting mechanism 3 is changed, the farther the melt-blown nozzle 4 is away from the paving surface, the included angle between the air jet route of an air jet port 42 of the melt-blown nozzle 4 and the outflow route of the melt-blown material is smaller, the fiber number difference of the melt-blown material in the width direction is smaller, the compactness of the reeled melt-blown wire is higher, and conversely, the closer the melt-blown nozzle 4 is to the paving surface, the lower the compactness of the melt-blown wire;
the collecting mechanism 3 starts the collecting wheels 32 with different diameters according to the magnitude of the extrusion stress, because the length of the collecting wheels 32 is the same as that of the collecting plate 31, the number of the cutting edges 321 on each collecting wheel 32 is the same, the width of the strip-shaped melt-blown material cut by the collecting wheels 32 with different diameters is different, the smaller the diameter of the collecting wheels 32 is, the thinner the cut strip-shaped melt-blown material is, the smaller the internal gap of the melt-blown thread material can be compressed in the extrusion process of the tightening groove 2 is, the higher the compactness of the melt-blown thread material is, otherwise, the lower the compactness of the melt-blown thread material is when the.
As shown in fig. 1, in the preferred embodiment of the present invention, the tightening slot 2 is a tapered slot, the circumferential range of the slot 2 is gradually enlarged on the conveying path of the meltblown material, and a complete circumferential enclosure is formed at the end of the meltblown material conveying direction, so that the outermost meltblown fabric can be rolled into a complete ring shape, on one hand, the surface of the meltblown fabric is smooth in appearance, and on the other hand, the strip-shaped filling material inside the meltblown fabric can be properly wrapped to prevent leakage.
As shown in FIG. 2, in the collecting mechanism 3 according to the preferred embodiment of the present invention, the collecting wheel 32 is disposed close to the collecting plate 31, the collecting wheel 32 is axially parallel to the collecting plate 31, the surface of the collecting wheel 32 is provided with the convex cutting edges 321, the cutting edges 321 contact with the collecting plate 31 when the collecting wheel 32 rotates, the length of the collecting wheel 32 is the same as that of the collecting plate 31 in this embodiment, the number of the cutting edges 321 on each collecting wheel 32 is the same, the width of the melt-blown strand material cut by the collecting wheels 32 having different diameters is different, the diameter of the collecting wheel 32 is smaller, the thinner the strip-shaped meltblown material is cut, the smaller the internal space of the meltblown thread can be compressed during the extrusion process in the take-up groove 2, the higher the degree of compactness of the meltblown thread, on the contrary, the collecting wheel 32 with the larger diameter is started, the lower the compactness of the meltblown strand, it will be appreciated that the number and size distribution of the collection wheels 32, and the length of the collection wheels 32 may be adjusted depending on the product.
As shown in fig. 2, the collecting plate 31 is hinged 34 to the conveyor belt 1, the angle between the collecting plate 31 and the conveyor belt 1 on the spreading side ranges from 180 ° to 270 °, in this case, the angle between the collecting plate 31 and the conveyor belt 1 on the spreading side ranges from 180 °, in this state, the device of the present invention is placed horizontally, the collecting plate 31 is nearly vertical to the horizontal plane, in this case, when the meltblown material falls on the collecting plate 31, the meltblown material can freely fall under the action of gravity, and in this case, the collecting plate 31 uses a plane with a smooth surface, and the meltblown material is not adhered to the collecting plate 31.
As shown in fig. 2, in the collecting mechanism 3 according to the preferred embodiment of the present invention, it is preferred that the number of the cutting edges 321 on each collecting wheel 32 is the same, the length of the collecting wheel 32 is the same as the length of the collecting plate 31, and the collecting surface of the collecting plate 31 is parallel to the conveying direction of the conveyor belt 1, it should be appreciated that the number of the cutting edges 321 on each collecting wheel 32 can be adjusted, when the diameter of the collecting wheel 32 is constant, and the number of the cutting edges 321 on the surface of the collecting wheel 32 is more, the cut meltblown filler material is finer and more compressible, and in a further preferred embodiment of the present invention, the cutting edges 321 are arranged in a diagonal manner on the surface of the collecting wheel 32, the cutting edges 321 have shorter lengths near both ends of the collecting wheel 32 and longer lengths near the middle of the collecting wheel 32, and the cut meltblown filler material is also different in.
In the invention, the obtained melt-blown thread material is of a solid structure, the outermost layer of the melt-blown thread material is wrapped with a layer of complete melt-blown fabric, the inner layer of the melt-blown thread material is a plurality of strip-shaped melt-blown materials, the melt-blown thread material is extruded and formed, the inner part of the melt-blown thread material is compact, the filtering capacity in the diameter direction is strong, and the melt-blown thread material can be directly wound and collected to form a winding filter core, preferably, a double-layer structure is adopted in the embodiment, the head end of a conveyor belt 1 is provided with a collecting mechanism 3 and a melt-blown nozzle 4, the melt-blown nozzle 4 is used for paving a first layer of melt-blown fabric on the conveyor belt 1, the collecting mechanism 3 is used for paving a first layer of strip-shaped filling material on the first layer of melt-blown fabric, when the melt-blown thread material moves to the head end of a tightening groove 2 along a conveying line, the tightening groove 2 is also, the product is conveyed through the closed circumference at the end of the constricting channel 2 to form a melt-blown strand of double-layered filling structure, it being understood that the layering of the melt-blown strand depends on the length and inner diameter of the conveyor belt 1 and the constricting channel 2, and on the filtration capacity of the product desired.
According to the melt-blown thread produced by the preferred embodiment of the invention, the discharge hole at the tail end of the tightening groove 2 is provided with a thread winding machine, and the melt-blown thread directly enters the thread winding machine along the rotation tangent line of the thread winding machine after passing through the tail end, so that the winding filter core made of the melt-blown thread as a raw material is obtained.
As shown in fig. 3, a nozzle with controllable spray width according to a preferred embodiment of the present invention includes: a melt-blown material chamber 41, and an air jet 42 surrounding the periphery of the melt-blown material chamber 41, wherein: jet-propelled route of air jet 42 is crossing with the melt-blown material outflow route, the jet-propelled air current drives the scattering of melt-blown material on the conveyer belt, the jet-propelled direction of air jet 42 is adjustable, it is preferred, 4 discharge gates of melt-blown nozzle are rectangular shape in this embodiment, 4 length direction of melt-blown nozzle are parallel with conveyer belt 1 direction of transfer, the air jet 42 is located 4 discharge gates length direction both sides of melt-blown nozzle, the jet-propelled route is towards collecting plate 31 direction, can be through the jet orientation of air jet 42, adjust the fineness distribution of melt-blown material on conveyer belt 1 and collecting plate 31, it should be realized, melt-blown nozzle 4 can adopt different forms, as long as ensure on conveyer belt 1 and collecting plate 31 can.
When the invention is used, the melt-blown nozzle 4 sprays the cone-shaped melt-blown material, the melt-blown material in the center area of the cone-shaped nozzle falls on the conveyor belt 1, the melt-blown material in the edge area of the cone-shaped nozzle falls on the collecting plate 31 on the collecting mechanism 3 at two sides of the conveyor belt 1, the electric heating wire 33 melts and cuts the melt-blown material, the collecting wheel 32 is started, the cutting edge 321 on the collecting wheel 32 cuts the melt-blown material and the melt-blown material on the collecting plate 31 into strips, and the strips of melt-blown material fall on the melt-blown fabric on the conveyor belt 1 and are tightened and rolled into threads.
In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. A melt-blown strand production apparatus comprising: the collecting mechanism is composed of a collecting plate and collecting wheels, wherein each side of the collecting mechanism is respectively provided with at least one collecting wheel, and the collecting wheels are positioned on one side of the collecting plate close to the conveying belt;
the collecting plate faces one side of the melt-blown nozzle, and an electric heating wire is arranged at a position close to the conveyor belt and can melt and separate melt-blown materials on the collecting plate from melt-blown materials on the conveyor belt;
the collecting wheel is close to the collecting plate, the axial direction of the collecting wheel is parallel to the collecting plate, a raised cutting edge is arranged on the surface of the collecting wheel, and the cutting edge is in contact with the collecting plate when the collecting wheel rotates.
2. The apparatus of claim 1, wherein: the collector plate is smooth and the meltblown material does not stick to the collector plate.
3. The apparatus of claim 1, wherein: the collecting wheel is positioned at the bottom of the collecting plate, and the melt-blown material on the collecting plate naturally falls on the collecting wheel after falling off.
4. The apparatus of claim 1, wherein: the melt-blown nozzle comprises a melt-blown material cavity and air nozzles surrounding the periphery of the melt-blown material cavity, an air injection route of the air nozzles is intersected with an outflow route of the melt-blown material, the jetted air flow drives the melt-blown material to be scattered on the conveying belt, and the air injection direction of the air nozzles is adjustable.
5. The apparatus of claim 4, wherein: the discharge port of the melt-blown nozzle is in a long strip shape, and the length direction of the melt-blown nozzle is parallel to the conveying direction of the conveying belt.
6. The melt-blown strand production method of the melt-blown strand production apparatus according to any one of claims 1 to 5, comprising the steps of:
(1) the melt-blown nozzle sprays conical melt-blown materials, the melt-blown materials in a conical central area fall on the conveyor belt, and the melt-blown materials in a conical edge area fall on the collecting mechanisms on two sides of the conveyor belt;
(2) the hot wire on the collecting plate melts and cuts off the melt-blown material, the collecting wheel is started, the cutting edge on the collecting wheel cuts the melt-blown material on the collecting wheel and the collecting plate into strips, and the strips of melt-blown material fall on the melt-blown fabric on the conveying belt and are tightened and compacted into a thread material by the tightening groove along the conveying direction;
(3) the tightening groove is in a truncated cone shape, the force applied to the melt-blown material is larger and larger along with the conveying direction, the pressure sensor at the tail end of the tightening groove measures the extrusion stress of the coiled melt-blown wire material to the groove wall of the tightening groove, so that the compaction degree of the interior of the melt-blown wire material is obtained, the pressure sensor feeds data back to the collecting mechanism and the melt-blown nozzle, and the melt-blown nozzle adjusts the spraying height according to the extrusion stress, so that the distribution of titer on the conveying belt and the collecting mechanism is changed; the gathering mechanism actuates gathering wheels of different sizes to vary the size of the meltblown strand cut by the gathering wheels.
7. The method of producing a meltblown strand according to claim 6, characterized in that: and a plurality of melt-blowing nozzles are distributed on the conveying line of the conveyor belt, and the fineness of melt-blown materials sprayed by the melt-blowing nozzles is gradually reduced along with the advancing of the conveying line.
8. The method of producing a meltblown strand according to claim 7, characterized in that: the melt-blown thread material is of a solid structure, the outermost layer of the melt-blown thread material is wrapped by a layer of complete melt-blown fabric, the inner layer of the melt-blown thread material is made of a plurality of strip-shaped melt-blown materials, the titer of the melt-blown thread material in the length direction changes from small to large, the melt-blown thread material is formed by extrusion, the inner part of the melt-blown thread material is compact, the filtering capacity of the melt-blown thread material in the diameter direction is strong, and the melt-blown thread.
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| CN202010276147.9A CN111472097B (en) | 2020-04-09 | 2020-04-09 | Melt-blown strand preparation device and preparation method thereof |
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| US5607766A (en) * | 1993-03-30 | 1997-03-04 | American Filtrona Corporation | Polyethylene terephthalate sheath/thermoplastic polymer core bicomponent fibers, method of making same and products formed therefrom |
| DE10084425T1 (en) * | 1999-03-30 | 2002-06-20 | Chisso Corp | filter cartridge |
| CN101952210B (en) * | 2007-12-31 | 2013-05-29 | 3M创新有限公司 | Fluid filtration articles and methods of making and using the same |
| CN204017536U (en) * | 2014-06-26 | 2014-12-17 | 杭州帝凡过滤技术有限公司 | A kind of non-woven fabrics is wrapped over filter core |
| CN110638574A (en) * | 2019-10-17 | 2020-01-03 | 杭州嘉杰实业有限公司 | High-strength absorption core body of disposable sanitary product and manufacturing device and manufacturing method thereof |
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Effective date of registration: 20210412 Address after: 314000 silk weaving Park, wangjiangjing Town, Xiuzhou District, Jiaxing City, Zhejiang Province Applicant after: Jiaxing KaiBang nylon Technology Co.,Ltd. Address before: Room 401-2, 4th floor, building 4, 66 wangmi street, high tech Zone, Suzhou, Jiangsu 215000 Applicant before: Suzhou jingjiewei fabric technology Co.,Ltd. |
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Denomination of invention: A preparation device and method for melt blown wire material Effective date of registration: 20230607 Granted publication date: 20210514 Pledgee: Zhejiang Hecheng Rural Commercial Bank Co.,Ltd. Pledgor: Jiaxing KaiBang nylon Technology Co.,Ltd. Registration number: Y2023330001103 |