阅读说明：本技术 塑料造粒设备的挤压装置 (Extrusion device of plastic granulation equipment ) 是由 王庆军 丁延莉 于 2021-07-23 设计创作，主要内容包括：本发明涉及一种塑料造粒设备的挤压装置,包括炮筒,该炮筒的侧部设置有排气孔,在该炮筒的内周穿设有螺杆,该螺杆的一端与驱动机构连接,螺杆的外周沿远离驱动机构的方向依次设置有第一螺旋叶片和第二螺旋叶片,螺杆的外周设置有挡块,该挡块位于第一螺旋叶片和第二螺旋叶片之间,且挡块的外周与炮筒的内周适配；炮筒内周被挡块分隔为第一挤压腔和第二挤压腔,第一螺旋叶片和第二螺旋叶片分别位于第一挤压腔和第二挤压腔内,排气孔与该第二挤压腔连通且靠近挡块；炮筒的侧部设置有与第一挤压腔连通的出料口和与第二挤压腔连通的进料口,炮筒的外侧还设置有连通出料口和进料口的过料管。本发明能改善传统的挤压装置中塑料易从放气孔喷出的现象。(The invention relates to an extrusion device of plastic granulation equipment, which comprises a gun barrel, wherein the side part of the gun barrel is provided with an exhaust hole, a screw rod is arranged in the inner circumference of the gun barrel in a penetrating way, one end of the screw rod is connected with a driving mechanism, the outer circumference of the screw rod is sequentially provided with a first helical blade and a second helical blade along the direction far away from the driving mechanism, the outer circumference of the screw rod is provided with a stop block, the stop block is positioned between the first helical blade and the second helical blade, and the outer circumference of the stop block is matched with the inner circumference of the gun barrel; the inner periphery of the gun barrel is divided into a first extrusion cavity and a second extrusion cavity by a baffle block, a first helical blade and a second helical blade are respectively positioned in the first extrusion cavity and the second extrusion cavity, and an exhaust hole is communicated with the second extrusion cavity and is close to the baffle block; the lateral part of the gun barrel is provided with a discharge hole communicated with the first extrusion cavity and a feed inlet communicated with the second extrusion cavity, and the outer side of the gun barrel is also provided with a material passing pipe communicated with the discharge hole and the feed inlet. The invention can improve the phenomenon that the plastic is easy to spray from the air vent in the traditional extrusion device.)

1. The utility model provides an extrusion device of plastics granulation equipment, includes the barrel, and the lateral part of this barrel is provided with the exhaust hole, wears to be equipped with the screw rod in the interior week of this barrel, and the one end and the actuating mechanism of this screw rod are connected, and this actuating mechanism is used for driving the screw rod rotates its characterized in that:

a first helical blade and a second helical blade are sequentially arranged on the outer periphery of the screw rod along the direction far away from the driving mechanism, a circle of stop block is arranged on the outer periphery of the screw rod and positioned between the first helical blade and the second helical blade, the mutually close ends of the first helical blade and the second helical blade are connected with the stop block, and the outer periphery of the stop block is matched with the inner periphery of the gun barrel;

the inner circumference of the gun barrel is divided into a first extrusion cavity and a second extrusion cavity by the stop block, the first helical blade and the second helical blade are respectively positioned in the first extrusion cavity and the second extrusion cavity, the exhaust hole is communicated with the second extrusion cavity and is close to the stop block;

the lateral part of the gun barrel is provided with a discharge hole communicated with the first extrusion cavity and a feed hole communicated with the second extrusion cavity, and the outer side of the gun barrel is also provided with a material passing pipe communicated with the discharge hole and the feed hole.

2. The extrusion apparatus of a plastic pelletizing device of claim 1, characterized in that:

the shape of one side of the material passing pipe, which is close to the gun barrel, is matched with the shape of the periphery of the gun barrel, and the material passing pipe is fixedly connected with the gun barrel.

3. The extrusion apparatus of a plastic pelletizing device of claim 2, characterized in that:

two material passing openings are formed in one side, close to the gun barrel, of the material passing pipe, and the two material passing openings are respectively aligned with the material outlet and the material inlet.

4. The extrusion apparatus of a plastic pelletizing device of claim 1, characterized in that:

the discharge hole and the feed inlet are circular holes.

5. The extrusion apparatus of a plastic pelletizing device of claim 1, characterized in that:

the periphery of the gun barrel is also connected with an exhaust pipe, and the exhaust hole is located on the inner periphery of the exhaust pipe.

6. The extrusion apparatus of a plastic pelletizing device of claim 1, characterized in that:

the discharge hole and the feed inlet are both close to the stop block.

7. The extrusion apparatus of a plastic pelletizing device of claim 1, characterized in that:

the gun barrel is further provided with an observation port and a material conveying port, and the observation port and the material conveying port are both located at one end, close to the driving mechanism, of the first extrusion cavity.

Technical Field

The invention relates to the technical field of plastic granulation equipment, in particular to an extrusion device of the plastic granulation equipment.

Background

Extrusion device of plastics granulation equipment includes barrel and the screw rod of setting in this barrel, back in plastics get into the barrel, melt under heating device's effect, the flue gas of production mixes together with the plastics after melting in the equipment barrel, form pressure, then plastics are when blowing out the hole through the barrel, easily spray out from blowing out the hole, there is the potential safety hazard, in addition, because gas and the plastics after melting mix together, make gas can not release completely, the granule that leads to producing has the hollow, the quality is not good.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an extrusion device of plastic granulation equipment to improve the phenomenon that plastic is easy to spray out of an air vent in the traditional extrusion device.

In order to solve the technical problems, the extrusion device of the plastic granulation equipment provided by the invention comprises a barrel, wherein the side part of the barrel is provided with an exhaust hole, a screw rod penetrates through the inner circumference of the barrel, one end of the screw rod is connected with a driving mechanism, the driving mechanism is used for driving the screw rod to rotate, the outer circumference of the screw rod is sequentially provided with a first spiral blade and a second spiral blade along the direction far away from the driving mechanism, the outer circumference of the screw rod is provided with a circle of stop block, the stop block is positioned between the first spiral blade and the second spiral blade, the mutually close ends of the first spiral blade and the second spiral blade are both connected with the stop block, and the outer circumference of the stop block is matched with the inner circumference of the barrel; the inner circumference of the gun barrel is divided into a first extrusion cavity and a second extrusion cavity by the stop block, the first helical blade and the second helical blade are respectively positioned in the first extrusion cavity and the second extrusion cavity, the exhaust hole is communicated with the second extrusion cavity and is close to the stop block; the lateral part of the gun barrel is provided with a discharge hole communicated with the first extrusion cavity and a feed hole communicated with the second extrusion cavity, and the outer side of the gun barrel is also provided with a material passing pipe communicated with the discharge hole and the feed hole.

The screw rod of the invention is provided with a stop block, a first helical blade and a second helical blade are respectively arranged on two sides of the stop block, materials move towards the stop block under the action of the first helical blade and are heated and melted in the movement process, when the materials move to the stop block, the materials change the flow direction under the blocking action of the stop block and enter the material passing pipe from the discharge hole of the gun barrel, smoke generated after plastic melting can enter the second extrusion cavity from the gap between the stop block and the gun barrel and is discharged from the exhaust hole, and the materials in the material passing pipe enter the second extrusion cavity from the feed hole of the gun barrel under the action of pressure and continue to move under the action of the second helical blade. Therefore, the material and smoke mixture can be divided when moving to the position of the stop block, smoke passes through the gap between the stop block and the gun barrel and is discharged from the exhaust hole, the material enters the second extrusion cavity from the material passing pipe, no material is sprayed when the smoke is discharged, the melted material is output through the gun barrel and does not contain smoke, and thus, the produced particles are not hollow, and the particle quality is improved.

Preferably, the shape of one side of the material passing pipe close to the barrel is matched with the shape of the periphery of the barrel, and the material passing pipe is fixedly connected with the barrel.

Preferably, one side of the material passing pipe, which is close to the gun barrel, is provided with two material passing ports, and the two material passing ports are respectively aligned with the material outlet and the material inlet.

Preferably, the discharge hole and the feed hole are both circular holes.

Preferably, the outer periphery of the barrel is further connected with an exhaust pipe, and the exhaust hole is located on the inner periphery of the exhaust pipe.

Preferably, the discharge hole and the feed inlet are both arranged close to the stop block.

Preferably, the barrel is further provided with an observation port and a material conveying port, and the observation port and the material conveying port are both located at one end, close to the driving mechanism, of the first extrusion cavity.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic structural diagram of an extrusion device of a plastic granulating apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a screw according to an embodiment of the present invention;

FIG. 3 is a sectional view of an extruding device of a plastic pelletizing apparatus according to an embodiment of the invention;

fig. 4 is a schematic structural diagram of a material passing pipe according to an embodiment of the present invention.

Reference numerals:

1-barrel; 11-a material conveying port; 12-a viewing port; 13-exhaust hole; 14-a discharge hole; 15-a feed inlet; 16-an exhaust pipe; 2-a screw; 21-a first helical blade; 22-a second helical blade; 23-a stopper; 3-a material passing pipe; 31-a material passing port.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the present embodiment provides an extrusion device of a plastic granulation apparatus, which includes a barrel 1 and a screw rod 2 penetrating through the barrel 1, wherein one end of the screw rod 2 is connected to a driving mechanism (e.g., a motor), and the driving mechanism is used for driving the screw rod 2 to rotate. A material conveying port 11 and an observation port 12 are arranged on the gun barrel 1 and close to the driving mechanism, wherein the material conveying port 11 is used for feeding materials, and the observation port 12 is convenient for observing the flowing condition of the materials and is used for collecting smoke.

The outer periphery of the screw rod 2 is sequentially provided with a first helical blade 21 and a second helical blade 22 along the direction far away from the driving mechanism, the outer periphery of the screw rod 2 is provided with a circle of stop blocks 23, the outer periphery of each stop block 23 is matched with the inner periphery of the gun barrel 1, each stop block 23 is positioned between the first helical blade 21 and the second helical blade 22, and the adjacent ends of the first helical blade 21 and the second helical blade 22 are connected with the stop blocks 23.

The inner circumference of the gun barrel 1 is divided into a first extrusion cavity and a second extrusion cavity by a stop block 23, a first helical blade 21 and a second helical blade 22 are respectively positioned in the first extrusion cavity and the second extrusion cavity, an exhaust hole 13 communicated with the second extrusion cavity is formed in the side part of the gun barrel 1, and the exhaust hole 13 is close to the stop block 23; in addition, a discharge port 14 communicated with the first extrusion cavity and a feed port 15 communicated with the second extrusion cavity are arranged at the side part of the gun barrel 1, and the discharge port 14 and the feed port 15 are both arranged close to the stop block 23; the outer side of the gun barrel 1 is welded with a material passing pipe 3 which is communicated with a material outlet 14 and a material inlet 15.

Specifically, the shape of one side of the material passing pipe 3 close to the barrel 1 is matched with the shape of the periphery of the barrel 1, two material passing openings 31 are formed in one side of the material passing pipe 3 close to the barrel 1, and the two material passing openings 31 are respectively aligned with the material outlet 14 and the material inlet 15. In this embodiment, the material passing hole 31, the material outlet 14 and the material inlet 15 are all circular holes.

Further, an exhaust pipe 16 is welded to the outer periphery of the barrel 1, and the exhaust hole 13 is located on the inner periphery of the exhaust pipe 16.

In this embodiment, material and flue gas mixture can realize the reposition of redundant personnel when moving dog 23 position, and the flue gas passes through and discharges from exhaust hole 13 through the gap department between dog 23 and barrel 1, and the material then gets into the second extrusion chamber from first extrusion chamber via material pipe 3, then when the flue gas is discharged, can not have the material blowout, and the material after melting passes through barrel 1 output, does not contain the flue gas, and the granule of producing like this does not have the cavity, has improved granule quality.

It should be noted that, in the extrusion device of the plastic granulation apparatus of the embodiment, only the structures of the screw 2 and the barrel 1 are improved on the basis of the conventional extrusion device to change the flow direction of the material, so that the material is separated from the flue gas, and the structures of the screw transmission, the plastic heating, the extrusion mechanism, and the like are the same as those of the prior art, and are not described herein again.

The screw rod of the invention is provided with a stop block, a first helical blade and a second helical blade are respectively arranged on two sides of the stop block, materials move towards the stop block under the action of the first helical blade and are heated and melted in the movement process, when the materials move to the stop block, the materials change the flow direction under the blocking action of the stop block and enter the material passing pipe from the discharge hole of the gun barrel, smoke generated after plastic melting can enter the second extrusion cavity from the gap between the stop block and the gun barrel and is discharged from the exhaust hole, and the materials in the material passing pipe enter the second extrusion cavity from the feed hole of the gun barrel under the action of pressure and continue to move under the action of the second helical blade. Therefore, the material and smoke mixture can be divided when moving to the position of the stop block, smoke passes through the gap between the stop block and the gun barrel and is discharged from the exhaust hole, the material enters the second extrusion cavity from the material passing pipe, no material is sprayed when the smoke is discharged, the melted material is output through the gun barrel and does not contain smoke, and thus, the produced particles are not hollow, and the particle quality is improved.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; these modifications and substitutions do not cause the essence of the corresponding technical solution to depart from the scope of the technical solution of the embodiments of the present invention, and are intended to be covered by the claims and the specification of the present invention.