CN213972494U - Extrusion device of PP-PE high-efficiency waterproof production line - Google Patents

Abstract

The utility model discloses a high-efficient waterproof production line's of PP-PE extrusion device, including the plastics extruder, there is the frame on the plastics extruder, installs the extruder barrel in the frame, and the extruder barrel has the export, and the screw rod is extruded in the extruder barrel to the pivoted setting, installs the drive in the frame and extrudes screw rod pivoted actuating mechanism, the extrusion die head that is connected with the export, wherein: the extrusion screw has: add material section, compression section, homogenization section, main screw thread, main screw groove and vice screw thread, vice screw groove have been seted up to the compression section, through setting for the various differences of main screw thread, main screw groove, vice screw thread, vice screw groove, make the raw materials can be better in the compression section melt through, let plastics can also adapt to the plastify of multiple raw materials when the plastify is extruded and extrude simultaneously.

Description

Extrusion device of PP-PE high-efficiency waterproof production line

Technical Field

The utility model relates to an extruder equipment field, in particular to extrusion device with a high-efficient waterproof production line of PP-PE.

Background

PP-PE is corrosion-resistant, and has the characteristics of excellent mechanical property, physical property, environmental protection property and the like, so that the PP-PE has wide application fields. The production of PE is a product prepared by processes of extrusion, calendering, cooling, rolling and the like on the basis of PE particle materials, the PE production line generally comprises an extrusion device, a calendering device, a cooling device and a rolling device, wherein the extrusion device generally utilizes a plastic extruder to plasticize and extrude PP-PE particles, the plastic extruder comprises an extruder barrel, an extrusion screw arranged in the extruder barrel, a driving motor for driving the extrusion screw to rotate and an extrusion die head arranged on an outlet of the extruder barrel, the structure of the extrusion screw directly influences the plasticization effect and the extrusion yield of plastics, the production efficiency and the production quality are determined, in addition, the extrusion screw of the traditional extruder comprises a plasticizing section, a compression section and a homogenizing and feeding section, the plasticization effect is poor, the yield is limited, the compression ratio range of the traditional extrusion screw is narrow, the plastic raw material which can be produced is too single, and the plasticizing extrusion of raw materials such as PE and the like is not applicable.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims at providing a high-efficient waterproof production line extrusion device of PP-PE.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme: the extrusion device of the PP-PE high-efficiency waterproof production line comprises a plastic extruder, the plastic extruder further comprises a rack, an extruder barrel arranged on the rack, the extruder barrel is provided with an outlet, an extrusion screw rod rotatably arranged in the extruder barrel, a driving mechanism arranged on the rack and used for driving the extrusion screw rod to rotate, and an extrusion die head connected with the outlet, and is characterized in that: the extrusion screw has: the feeding section is provided with a first thread and a first screw groove; a compression section adjacent to the feeding section, wherein the compression section is provided with a main thread and a main screw groove, and an auxiliary thread and an auxiliary screw groove, the main thread has a main lead S1, the main screw groove has a main screw groove depth H1, the auxiliary thread has an auxiliary lead S2, the auxiliary screw groove has an auxiliary screw groove depth H2, the depth is gradually increased along a discharging direction H1 of the extrusion device, the depth is gradually decreased H2, and S1: s2 is 1.1-1.5: 1; the homogenizing section is adjacent to the compressing section and is provided with a third thread and a third screw groove; a mixing section adjacent to the homogenizing section, the mixing section having a plurality of mixing plow pins.

In the above-described aspect, preferably, the main thread has a plurality of equal-length main leads S1, and the sub thread has a plurality of equal-length sub leads S2.

In the above technical solution, preferably, the first thread, the main thread, the third thread, and the sub thread have the same direction of rotation, and the first thread, the main thread, and the third thread have the same pitch.

In the above technical solution, preferably, a ratio of a depth of the first groove to a depth of the third groove is 1.5 to 4: 1.

in the above technical solution, preferably, the third thread has a lead of 4 to 10.

The utility model discloses an extrusion screw that is equipped with on the extruder, to the structure setting of the main thread of the compression section on the extrusion screw and vice screw thread, let plastics obtain fine plastify in extrusion screw to add mixing at homogenization section rear, make plastics when the plastify is extruded, can stabilize through homogenization portion and mixing portion, promote the plastify effect, thereby improve and extrude output, can adapt to the plastify of multiple raw materials such as PP-PE and extrude, can improve production efficiency and production quality.

Drawings

Fig. 1 is a side view of the present invention;

FIG. 2 is a side view of an extrusion screw with the present invention;

FIG. 3 is an enlarged view of FIG. 2 at A;

FIG. 4 is an enlarged view of FIG. 3 at B;

wherein: 1. a frame; 2. an extruder barrel; 21. an outlet; 3. extruding a screw; 31. a feeding section; 310. a first thread; 311. a first screw groove; 32. a compression section; 320. a main thread; 3200. a main screw groove; 321. a secondary thread; 3210. an auxiliary screw groove; 33. a homogenization section; 331. a third thread; 332. a third screw groove; 34. a mixing section; 4. a drive mechanism; 5. an extrusion die.

Detailed Description

For the purpose of explaining the technical content, the structural features, the achieved objects and the effects of the present invention in detail, the following description will be made in conjunction with the embodiments and the accompanying drawings, wherein "front", "back", "up" and "down" in the present specification correspond to the respective positional relationships shown in fig. 1.

Referring to fig. 1 and 2, an extrusion device of a PP-PE high-efficiency waterproof production line comprises a plastic extruder, the plastic extruder comprises a frame 1, an extruder barrel 2 arranged on the frame 1, an outlet 21 of the extruder barrel 2 arranged at the front part of the extruder barrel 2, an extrusion screw 3 arranged in the extruder barrel 2 in a rotating way, a driving mechanism 4 arranged on the frame 1 and used for driving the extrusion screw 3 to rotate, an extrusion die head 5 connected with the outlet 21 of the extruder barrel 2, a melt metering pump is also arranged between the outlet 21 and the extrusion die head 5, the melt metering pump is also provided with an extrusion screen changer in a matching way, the extrusion screen changer is used for filtering impurities in the plastic melt, the back-to-front direction along the extrusion screw rod 3 is the discharging direction of the extrusion device, wherein the extrusion screw 3 is provided with a feeding section 31, a compression section 32, a homogenizing section 33 and a mixing section 34 in sequence from the front.

As shown in fig. 2-4, the feeding section 31 of the extrusion screw 2 is disposed at the rear part of the extruder barrel 2, and a hopper (not shown) for feeding raw material is disposed above the rear side of the extruder barrel 2, the homogenizing section 31 is used for receiving the raw material to the extrusion screw 3, and the feeding section 31 is provided with a first screw 310 and a first screw groove 311.

The compression section 32 is adjacent to the feeding section 31 at the rear, and the compression section 32 is provided with a main thread 320, a main thread groove 3200, an auxiliary thread 321 and an auxiliary thread groove 3210. The primary thread 3200 has a primary lead S1, the secondary thread 3210 has a secondary lead S2, S1: s2 is 1.1-1.5: 1. While the primary thread 320 has a plurality of equal length primary leads S1 and the secondary thread 321 has a plurality of equal length secondary leads S2. The main groove 3200 has a main groove depth H1, the sub groove 3210 has a sub groove depth H2, and a gap between the main thread and the sub thread, which is a height difference between outer circumferential surfaces where the main thread and the sub thread are located, is 1.3-1.5 mm. In the extrusion device, along the discharge direction, the height H1 of the main screw groove is gradually increased, and the height H2 of the auxiliary screw groove is gradually reduced.

The homogenizing section 33 is adjacent to the rear compressing section 32, the homogenizing section 33 is provided with a third thread 331 and a third thread groove 332, and the third thread 331 has 4-10 leads. A mixing section 34 is provided at the front side of the homogenizing section 33, the mixing section 34 has a plurality of mixing pins (not shown), and the mixing section 34 performs a function of uniform stirring.

The first screw 310, the main screw 320, the third screw 331 and the auxiliary screw 321 provided on the extrusion screw 3 have the same direction of rotation, and the first screw 310, the main screw 320 and the third screw 331 have the same pitch. And the ratio of the depth of the first screw 311 of the feeding section to the depth of the third screw 332 of the homogenizing section 33 is 1.5-4: 1.

After the raw material enters the extrusion screw 3 from the hopper at the rear and passes through the feeding section 31, the raw material is transported from the rear to the front by the compression section 32 configured as described above, so that the raw material is well melt-mixed in the compression section 32, and the air entrained in the raw material is discharged from the feeding section 31, and as the raw material is transported forward, the raw material is simultaneously heated from the outside of the extruder barrel 2, and the extrusion screw 3 and the extruder barrel 2 are intensively stirred, mixed, sheared, and the like, and the raw material starts to be melted by different settings of the lead, the groove height, and the like of the main thread 320 and the auxiliary thread 321 of the compression section 32. The liquid phase of the raw material is continuously increased and the solid phase thereof is continuously reduced in the compression section 32 along with the advancing of the discharging direction until the raw material reaches the front part of the compression section 32, the raw material added in the rear end feeding section 31 is well melted, and then the melted raw material is transmitted to the homogenization section 33 in the front part, the melted raw material transmitted from the rear part is further plasticized through strong stirring in the homogenization section 33, and the raw material is extruded from the extrusion screw 3 at constant pressure, constant temperature and constant quantity, so that the production of plastic products is completed.

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.

Claims (5)

1. The extrusion device of the PP-PE high-efficiency waterproof production line comprises a plastic extruder, the plastic extruder further comprises a rack (1), an extruder barrel (2) arranged on the rack (1), the extruder barrel (2) is provided with an outlet (21), a rotary extrusion screw (3) arranged in the extruder barrel (2), a driving mechanism (4) arranged on the rack (1) and used for driving the extrusion screw (3) to rotate, and an extrusion die head (5) connected with the outlet (21), and the extrusion device is characterized in that: the extrusion screw (3) comprises:

the feeding section (31) is provided with a first thread (310) and a first screw groove (311);

a compression section (32) adjacent to the feeding section (31), wherein the compression section (32) is provided with a main thread (320), a main screw groove (3200), an auxiliary thread (321) and an auxiliary screw groove (3210), the main thread (320) has a main lead S1, the main screw groove (3200) has a main screw groove depth H1, the auxiliary thread (321) has an auxiliary lead S2, the auxiliary screw groove (3210) has an auxiliary screw groove depth H2, the compression section gradually increases along a discharging direction H1 of the extruding device, the compression section H2 gradually decreases, and the compression section S1: s2 is 1.1-1.5: 1;

the homogenizing section (33) is adjacent to the compressing section (32), and the homogenizing section (33) is provided with a third thread (331) and a third screw groove (332);

a mixing section (34) adjacent to said homogenizing section (33), said mixing section (34) having a plurality of mixing pins.

2. The extrusion apparatus of PP-PE high-efficiency waterproof production line according to claim 1, wherein said main thread (320) has a plurality of said main leads S1 of equal length, and said secondary thread (321) has a plurality of said secondary leads S2 of equal length.

3. The extrusion apparatus of PP-PE high-efficiency waterproof production line according to claim 1, wherein the first thread (310), the main thread (320), the third thread (331) and the auxiliary thread (321) have the same direction of rotation, and the first thread (310), the main thread (320) and the third thread (331) have the same pitch.

4. The extrusion device of PP-PE high-efficiency waterproof production line according to claim 1, wherein the ratio of the depth of the first screw groove (311) to the depth of the third screw groove (332) is 1.5-4: 1.

5. the extrusion apparatus of PP-PE high-efficiency waterproof production line of claim 1, wherein the third thread (331) has a lead of 4-10.

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