CN213767123U - Special high-fat-soluble polypropylene melt-blown screw - Google Patents

Abstract

The utility model discloses a special screw rod of high fat polypropylene melt-blown, including the screw rod body, including transmission section, feed section, compression section, measurement section, protective screen section, mixing section, ejection of compact section and screw head on the screw rod body along material moving direction in proper order, be provided with first ring cover and second ring cover on the ejection of compact section, first ring cover and second ring are sheathe in and all are provided with a plurality of blown down tanks, and the length direction of a plurality of blown down tanks is all parallel with the axis direction of screw rod body, first ring cover and screw rod body fixed connection, second ring cover rotates with the screw rod body to be provided with locking device on the second ring cover, this melt-blown special screw rod can make the plastify more even of material, more abundant to improve the product quality, improve the filter effect of melt-blown method non-woven cloth.

Description

Special high-fat-soluble polypropylene melt-blown screw

Technical Field

The utility model relates to a melt and spout screw rod technical field, more specifically the special screw rod of high fat polypropylene that dissolves is spouted that says so.

Background

The production process of melt-blown non-woven fabric is that polymer slice with high melt index is extruded, heated and melted into high temperature melt with excellent flowability, and the melt is blown away into fine fiber with high temperature and high speed hot air flow, and the fine fiber is gathered into fiber web in the receiving device and adhered to form the non-woven fabric with the afterheat of the receiving device.

When the existing melt-blown screw is used for plasticizing materials, the plasticizing and mixing are not uniform, and the performance of the non-woven fabric is influenced.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a special screw rod is spouted to high fat-dissolving polypropylene, this special screw rod of melt-blown can make the material plastify more even, more abundant to improve the product quality, improve the filter effect of melt-blown method non-woven.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a special screw rod of melt-blown of high fat polypropylene, includes the screw rod body, including transmission section, feeding section, compression section, measurement section, protective screen section, mixing section, ejection of compact section and screw head on the screw rod body in proper order along material moving direction, be provided with first ring cover and second ring cover on the ejection of compact section, first ring cover and second ring are sheathe in and all are provided with a plurality of blown down tanks, and the length direction of a plurality of blown down tanks is all parallel with the axis direction of screw rod body, first ring cover and screw rod body fixed connection, second ring cover rotates with the screw rod body to the second ring is sheathe in and is provided with locking device.

Further the locking device comprises a threaded hole arranged on the second ring sleeve and a locking bolt, wherein the locking bolt extends into the threaded hole and is abutted against the screw body.

Furthermore, a plurality of discharge chutes on the first ring sleeve and the second ring sleeve are uniformly distributed along the circumferential direction.

And further, the feeding section, the compression section and the metering section are all provided with screw edges with the same screw pitch, the screw edges adopt 80-degree front angles, and a screw groove is formed between every two adjacent screw edges.

Further the groove depth of the screw groove at the feeding section is equal, the groove depth of the screw groove at the metering section is equal, the groove depth of the screw groove at the feeding section is greater than that of the screw groove at the metering section, the groove depth of the screw groove at the compression section is gradually changed, and the groove depth of the screw groove from one end of the compression section connected with the feeding section to one end of the compression section connected with the metering section is gradually reduced.

Further the surface slant of barrier section is provided with a plurality of sand grips, forms the molten bath that can supply the melt to pass through between two adjacent sand grips, and the initiating terminal of two adjacent sand grips is located different rings.

And a plurality of pins are arranged on the surface of the mixing section, and the pins are rhombic.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a melt and spout special screw rod and set up first ring cover and second ring cover on the ejection of compact section, through rotating second ring cover, change the contact ratio of the blown down tank on blown down tank and the first ring cover on the second ring cover, and then control the extrusion rate of melt and spout special screw rod, increase the dwell time of material in melt and spout special screw rod, make the material plastify more even in melt and spout special screw rod, more abundant to improve the product quality, improve the filter effect of melt and spout method non-woven.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

FIG. 1 is a schematic structural view of a special high-fat-soluble polypropylene screw for melt-blowing according to the present invention;

fig. 2 is a partial enlarged view a in fig. 1.

Labeled as: 1. a transmission section; 2. a feeding section; 3. a compression section; 4. a metering section; 5. a barrier section; 6. a mixing section; 7. a discharging section; 8. a screw edge; 9. a screw channel; 10. a convex strip; 11. a melt tank; 12. a pin; 13. a screw head; 14. a first loop; 15. a second loop; 16. and locking the bolt.

Detailed Description

In the description of the present invention, it should be noted that, for the orientation words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and the positional relationship are indicated based on the orientation or the positional relationship shown in the drawings, and the description is only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or the element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and "a plurality" or "a plurality" in the description of the invention means two or more unless a specific definition is explicitly provided.

A special high-fat-solubility polypropylene melt-blown screw comprises a screw body, wherein the screw body sequentially comprises a transmission section 1, a feeding section 2, a compression section 3, a metering section 4, a barrier section 5, a mixing section 6, a discharging section 7 and a screw head 13 along the material moving direction, the discharging section 7 is provided with a first ring sleeve 14 and a second ring sleeve 15, the first ring sleeve 14 and the second ring sleeve 15 are both provided with a plurality of discharging grooves, the length directions of the discharging grooves are parallel to the axial direction of the screw body, the first ring sleeve 14 is fixedly connected with the screw body, the second ring sleeve 15 is rotatably connected with the screw body, and the second ring sleeve 15 is provided with a locking device;

through setting up first ring cover 14 and second ring cover 15 on ejection of compact section 7, through rotating second ring cover 15, change the contact ratio of the blown down tank on second ring cover 15 and the blown down tank on first ring cover 14, and then control the extrusion speed of melt-blown special screw rod, increase the dwell time of material in melt-blown special screw rod, make plasticized more even, more abundant in melt-blown special screw rod of material.

Preferably, as shown in fig. 2, the locking device comprises a threaded hole provided on the second collar 15 and a locking bolt 16, the locking bolt 16 extending into the threaded hole and abutting against the screw body; and (3) adjusting the extrusion speed of the special melt-blown screw, loosening the locking bolt 16 to ensure that the locking bolt 16 does not abut against the screw body any more, then rotating the second ring sleeve 15 to adjust the overlap ratio of the discharge chute on the second ring sleeve 15 and the discharge chute on the first ring sleeve 14, and then screwing the locking bolt 16 to ensure that the locking bolt 16 abuts against the screw body again, thus completing the adjustment.

Preferably, a plurality of discharge chutes on the first ring sleeve 14 and the second ring sleeve 15 are uniformly distributed along the circumferential direction, so that the feeding of the first ring sleeve 14 and the discharging of the second ring sleeve 15 are uniform.

Preferably, as shown in fig. 1, the feeding section 2, the compression section 3 and the metering section 4 are all provided with screw flights 8 with the same screw pitch, the screw flights 8 adopt a front angle of 80 degrees, and a screw groove 9 is formed between two adjacent screw flights 8, so that the material is positioned in the screw groove 9; the screw edge 8 is designed into a front angle of 80 degrees, so that the conveying capacity of the special screw for melt-blowing is increased, the reverse flow is reduced, and the pressure is stabilized.

Preferably, the groove depths of the screw grooves 9 at the feeding section 2 are equal, the groove depths of the screw grooves 9 at the metering section 4 are equal, the groove depth of the screw groove 9 at the feeding section 2 is greater than that of the screw groove 9 at the metering section 4, the groove depth of the screw groove 9 at the compression section 3 is gradually changed, and the groove depth of the screw groove 9 from the end of the compression section 3 connected with the feeding section 2 to the end connected with the metering section 4 is gradually reduced;

the screw groove 9 at the feeding section 2 is as deep as the solid material, and is used for conveying the solid material, compacting and preheating the loose particles, and then conveying the solid material to the compression section 3; the depth of the screw groove 9 at the compression section 3 gradually changes, the material is continuously compressed in the taper space, and the material is repeatedly melted and homogenized through heat transfer and friction shearing; the screw groove 9 at the metering section 4 is equal in depth (shallow groove), the materials are further homogenized at the metering section 4, and the metering section 4 extrudes the melted materials quantitatively and stably under constant pressure.

Preferably, as shown in fig. 1, a plurality of convex strips 10 are obliquely arranged on the surface of the barrier section 5, a melt tank 11 through which a melt can pass is formed between two adjacent convex strips 10, and the starting ends of two adjacent convex strips 10 are located on different rings; when the material enters the barrier section 5, the molten material is divided into a plurality of strands of material flows, the material flows enter the melt tank 11 and then pass through the melt tank 11 to enter the material mixing section, and the unmelted material is blocked outside the barrier section 5, sheared and melted again and then melted completely and enters the melt tank 11.

Preferably, as shown in fig. 1, a plurality of pins 12 are arranged on the surface of the mixing section 6, the pins 12 are in a diamond shape, and when the material enters the mixing section, the plurality of diamond-shaped pins 12 disperse and mix the material, so that the material is further refined and uniform.

Preferably, the length-diameter ratio of the screw body is 34, and the residence time of the material in the screw is prolonged by adopting a large length-diameter ratio of the screw body, so that the material is plasticized more uniformly and sufficiently, and the performance of the product is improved.

Preferably, the screw body is processed by spraying nickel-based metal, so that the surface hardness of the screw body is enhanced, the wear resistance of the screw body is enhanced, and the service life of the screw body is prolonged.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (7)

1. The utility model provides a special screw rod of high fat-soluble polypropylene melt-blown, includes the screw rod body, its characterized in that: the screw rod body is gone up along material moving direction and is included transmission section, feeding section, compression section, measurement section, protective screen section, mixing section, ejection of compact section and screw head in proper order, be provided with first ring cover and second ring cover on the ejection of compact section, first ring cover and second ring are sheathe in and all are provided with a plurality of blown down tanks, and the length direction of a plurality of blown down tanks all is parallel with the axis direction of screw rod body, first ring cover and screw rod body fixed connection, second ring cover rotates with the screw rod body to be connected to the second ring is sheathe in and is provided with locking device.

2. The special high-fat-soluble polypropylene screw for melt-blowing according to claim 1, wherein: the locking device comprises a threaded hole and a locking bolt, wherein the threaded hole is formed in the second ring sleeve, and the locking bolt extends into the threaded hole and abuts against the screw body.

3. The special high-fat-soluble polypropylene screw for melt-blowing according to claim 2, wherein: and the discharge chutes on the first ring sleeve and the second ring sleeve are uniformly distributed along the circumferential direction.

4. The special high-fat-soluble polypropylene screw for melt-blowing according to claim 1, wherein: the feeding section, the compression section and the metering section are all provided with screw edges with the same screw pitch, the screw edges adopt 80-degree front angles, and a screw groove is formed between every two adjacent screw edges.

5. The special high-fat-soluble polypropylene screw for melt-blowing according to claim 4, wherein: the groove depths of the screw grooves at the feeding section are equal, the groove depths of the screw grooves at the metering section are equal, the groove depths of the screw grooves at the feeding section are greater than those of the screw grooves at the metering section, the groove depths of the screw grooves at the compression section are gradually changed, and the groove depths of the screw grooves from one end of the compression section connected with the feeding section to one end of the compression section connected with the metering section are gradually reduced.

6. The special high-fat-soluble polypropylene screw for melt-blowing according to claim 1, wherein: the surface of the barrier section is obliquely provided with a plurality of convex strips, a molten liquid groove for molten liquid to pass through is formed between every two adjacent convex strips, and the starting ends of the two adjacent convex strips are positioned on different rings.

7. The special high-fat-soluble polypropylene screw for melt-blowing according to claim 1, wherein: the surface of the mixing section is provided with a plurality of pins which are rhombic.

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