CN213412585U - Melting and mixing device for plastic granulation - Google Patents
Melting and mixing device for plastic granulation Download PDFInfo
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- CN213412585U CN213412585U CN202022254488.4U CN202022254488U CN213412585U CN 213412585 U CN213412585 U CN 213412585U CN 202022254488 U CN202022254488 U CN 202022254488U CN 213412585 U CN213412585 U CN 213412585U
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Abstract
The utility model discloses a melting and mixing device for plastic granulation, which comprises a first extruder, wherein a driving screw rod is rotatably arranged in the first extruder, and a first feed inlet and a first discharge outlet are arranged on the first extruder; the second extruder is provided with a second feeding hole and a wire outlet, and the second feeding hole is connected with the first discharging hole of the first extruder; a circulating rolling cavity and an extrusion cavity are arranged in the second extruder, and the second feed port is communicated with the circulating rolling cavity; the inside cone-shaped screw rod and the straight-bar screw rod are rotatably mounted in the second extruder, the cone-shaped screw rod and the straight-bar screw rod are fixedly arranged into a whole, the cone-shaped screw rod is located in the circulating kneading cavity, the straight-bar screw rod is located in the extrusion cavity, and the end portion of the straight-bar screw rod is located in a screw outlet of the second extruder. The utility model discloses a to plastics closure mixing, can once seal the continuous production granulation, energy-concerving and environment-protective, safe pollution-free has practiced thrift the human cost, has improved production efficiency.
Description
Technical Field
The utility model belongs to the technical field of plastics granulation equipment, more specifically say, the utility model relates to a melting mixing device that plastics granulation was used.
Background
With the rapid development of modified plastics in various countries in the world, particularly the improvement, the recycling and the recycling of waste plastics, tens of thousands of tons of resources are required to be granulated, regenerated and recycled after a large number of plastic products are upgraded and updated for decades. However, the traditional granulating extruder, no matter a single-screw or double-screw granulating extruder, can not solve the problems of dispersibility and uniformity in the plastic melting process well, and the traditional plastic mixing device is used for feeding the mixed plastic into a mixing mill to raise the temperature to a sufficient degree, manually feeding the mixed plastic and repeatedly mixing the mixed plastic; therefore, the traditional plastic refining machine has high cost, heavy environmental pollution, high labor intensity, low efficiency, large occupied field area and high production cost, and simultaneously can bring the difficult problem of unstable quality for modified plastics, particularly, the quality is seriously influenced by material delamination caused by mixing of other different materials when the recycled plastics are recycled, and only low-end recycling can be realized.
In the past decades, people want to solve the problem by using a simple and convenient method with low cost, and only various auxiliary agents are added, but the method cannot be popularized because the cost is high.
Therefore, a melt kneading apparatus for plastic granulation, which has excellent performance and is easy to handle, is required.
SUMMERY OF THE UTILITY MODEL
An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages which will be described later.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a melt-kneading apparatus for plastic granulation, comprising:
the first extruder is internally and rotatably provided with a driving screw, and a first feeding hole and a first discharging hole are formed in the first extruder;
the second extruder is provided with a second feeding hole and a wire outlet, and the second feeding hole is connected with the first discharging hole of the first extruder; a circulating rolling cavity and an extrusion cavity are arranged in the second extruder, and the second feed port is communicated with the circulating rolling cavity; the inside cone-shaped screw rod and the straight-bar screw rod are rotatably mounted in the second extruder, the cone-shaped screw rod and the straight-bar screw rod are fixedly arranged into a whole, the cone-shaped screw rod is located in the circulating kneading cavity, the straight-bar screw rod is located in the extrusion cavity, and the end portion of the straight-bar screw rod is located in a screw outlet of the second extruder.
Preferably, the first discharge port of the first extruder is connected with the second feed port of the second extruder through a connecting pipe, one end of the connecting pipe is fixedly sleeved on the first discharge port of the first extruder, and the other end of the connecting pipe abuts against the upper surface of the second feed port of the second extruder.
Preferably, wherein, the outside fixed mounting of connecting tube has heat preservation device, heat preservation device's structure includes:
the inner wall of the fixing piece is tightly attached to the outer wall of the connecting pipeline, an accommodating interlayer is arranged inside the fixing piece, and a plurality of heat-insulating cotton layers are filled in the accommodating interlayer; the outer surface of the fixed part is provided with an arc-shaped groove;
and the semicircular arc-shaped fasteners are embedded into the arc-shaped grooves of the fixing pieces, fixing screw holes are formed in two ends of each fastener, and the two fasteners are fixedly connected by arranging fixing bolts in the fixing screw holes.
Preferably, the connecting pipeline is an L-shaped connecting pipeline or a straight-tube connecting pipeline, and the plurality of fixing pieces are tightly fixed outside the connecting pipeline.
Preferably, the arc-shaped groove is provided with an anti-skid protrusion, and the inner ring of the fastener is provided with anti-skid stripes matched with the anti-skid protrusion.
Preferably, one end of the fixing piece is closed, and the other end of the fixing piece is provided with an opening.
Preferably, the connection surface of the inner wall of the extrusion cavity and the inner wall of the circulating rolling cavity is a connection transition surface which is obliquely arranged.
The utility model discloses at least, include following beneficial effect: the utility model discloses a closed mixing to plastics can realize practicing the plastic extrusion granulation and once seal continuous production, and is energy-concerving and environment-protective, and safe pollution-free has practiced thrift the human cost, has improved the production efficiency that plastics were extruded and are taken out silk, granulation. The utility model discloses the structure to the inside screw rod of second extruder and cavity has improved, kneads the chamber through conical screw and circulation and cooperatees, can knead the intracavity in the circulation and realize kneading repeatedly the material, has improved the degree of consistency of plastic products, has ensured the production quality of product.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Description of the drawings:
FIG. 1 is a schematic structural view of a melting and mixing device for plastic granulation according to the present invention;
fig. 2 is a schematic view of an internal structure of a second extruder provided by the present invention;
FIG. 3 is a schematic view of a fixing member structure of the heat preservation device according to the present invention;
fig. 4 is a sectional view of a fixing member of the heat preservation device provided by the present invention;
fig. 5 is a schematic view of a fastener structure of the heat preservation device provided by the present invention.
The specific implementation mode is as follows:
the present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
It should be noted that in the description of the present invention, the terms indicating the orientation or the positional relationship are based on the orientation or the positional relationship shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, such as "connected," which may be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, or a connection between two elements, and those skilled in the art will understand the specific meaning of the terms in the present invention in a specific context.
Furthermore, in the present disclosure, unless explicitly stated or limited otherwise, a first feature may be "on" or "under" a second feature in direct contact with the first and second features, or in indirect contact with the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1-5: the utility model discloses a melting mixing device that plastics granulation was used, include:
the first extruder 1 is internally and rotatably provided with a driving screw 103, and the first extruder 1 is provided with a first feeding hole 101 and a first discharging hole 102;
a second extruder 2, wherein a second feed inlet 201 and a filament outlet 202 are arranged on the second extruder 2, and the second feed inlet 201 is connected with the first discharge outlet 102 of the first extruder 1; a circulating rolling cavity 3 and an extrusion cavity 4 are arranged in the second extruder 2, and the second feeding hole 201 is communicated with the circulating rolling cavity 3; the second extruder 2 is internally provided with a conical screw 5 and a straight rod screw 6 in a rotating mode, the conical screw 5 and the straight rod screw 6 are fixedly arranged into a whole, the conical screw 5 is located in the circulating kneading cavity 3, the straight rod screw 6 is located in the extrusion cavity 4, and the end portion of the straight rod screw 6 is located in the filament outlet 202 of the second extruder 1.
The working principle is as follows: when the melting and mixing device for plastic granulation is used for processing modified plastic, plastic raw materials are added into the first extruder 1 from the first feeding hole 101, the plastic raw materials are heated to be in a melting state in the first extruder 1, and the melted plastic materials are driven by the driving screw rod of the first extruder 1 to be conveyed to the first discharging hole 102 of the first extruder 1, and the melted plastic materials enter the second feeding hole 201 of the second extruder 2 from the first discharging hole 102 and enter the circulating and kneading cavity 3 from the second feeding hole 201; the conical screw 5 and the straight dry screw 6 rotate, at the moment, the circulating kneading cavity 3 is almost filled with molten plastic materials, a small part of the molten plastic materials move to the filament outlet 202 along with the rotation of the straight rod screw 6, machine grain extraction is carried out at the filament outlet 202, most of redundant molten plastic materials are repeatedly and circularly kneaded in the circulating kneading cavity 3 by the conical screw 5, the molten plastic repeatedly and circularly kneaded in the circulating kneading cavity 3 is driven by the straight rod screw 6 to be conveyed to the filament outlet 202 along with the continuous addition of the molten plastic to the second extruder 2, and machine grain extraction is completed. The conical screw 5 is matched with the circulating rolling cavity 3 to repeatedly roll the molten plastic material, so that the uniformity of the molten plastic material is improved, and the quality of a modified plastic product is improved; and the utility model provides a device need not increase extra operating personnel, what molten plastics was kneaded repeatedly in the second extruder and was utilized is that the molten plastics material is the heating waste heat that is heated in first extruder, consequently manufacturing cost has been practiced thrift to this device, and energy loss is little. Because the molten plastic material directly enters the second extruder 2 after leaving the first discharge port 102 of the first extruder 1, the device realizes closed continuous production, and is safe and pollution-free.
In the above technical solution, the first discharge port 102 of the first extruder 1 is connected with the second feed port 201 of the second extruder 2 through the connecting pipe 7. One end of the connecting pipeline 7 is fixedly sleeved on the first discharge port 102 of the first extruder 1, and the other end of the connecting pipeline 7 is abutted to the upper surface of the second feed port 201 of the second extruder 2. This arrangement achieves a closure of the entire device, and the molten plastic material leaving the first outlet 102 can enter the second extruder 2 along the connecting duct 7, ensuring that no environmental pollution is caused.
In the above technical scheme, connecting tube 7 outside fixed mounting has the heat preservation device, the structure of heat preservation device includes:
the inner wall of the fixing piece 8 is tightly attached to the outer wall of the connecting pipeline 7, an accommodating interlayer 81 is arranged inside the fixing piece 8, and multiple layers of heat-insulating cotton layers 82 are filled in the accommodating interlayer 81; the outer surface of the fixed part 8 is provided with an arc-shaped groove 83;
and the semicircular arc-shaped fastening piece 9 is embedded into the arc-shaped groove 83 of the fixing piece 8, fixing screw holes 91 are formed in two ends of the fastening piece 9, and the two fastening pieces 9 are fixedly connected by arranging fixing bolts in the fixing screw holes 91. The heat preservation device is used for reducing heat exchange between the molten plastic material and the outside, so that in the circulating rolling cavity, the waste heat of the first extruder 1 for heating the plastic material can be fully utilized, and the energy utilization rate is improved. The fixing piece 8 is used for filling the heat preservation cotton layer 82, and is fixed in pairs through a plurality of fasteners 9, so that the two semicircular arc-shaped fixing pieces 8 can be fixed outside the connecting pipeline 7, and the arrangement is favorable for the disassembly of the fixing piece 8 and the replacement of the heat preservation cotton layer 82. The arc-shaped slot 83 is used for preventing the fastener 9 from axially displacing on the surface of the fixed part 8, and ensures the stability of the installation and fixation of the fastener 9 on the fixed part 8.
In the above technical solution, the connecting pipe 7 is an L-shaped connecting pipe or a straight pipe-shaped connecting pipe, and the plurality of fixing members 8 are tightly fixed outside the connecting pipe 7. The connecting pipe 7 shown in fig. 1 is an L-shaped connecting pipe, and four fixing pieces 8 fixedly arranged in pairs are mounted on the L-shaped connecting pipe.
In the above technical solution, the arc-shaped groove 83 is provided with the anti-slip protrusion 831, and the inner ring of the fastener 9 is provided with the anti-slip stripe 92 matched with the anti-slip protrusion 831. The anti-slip protrusions 831 and the anti-slip strips 92 are used for ensuring that the fastening member 9 cannot rotate circumferentially in the arc-shaped groove 83, and ensuring the mounting and fixing stability of the fastening member 9 to the fixing member 8.
In the above technical scheme, one end of the fixing member 8 is closed, and the other end is provided with an opening. When the heat insulation cotton layer 82 is filled, the heat insulation cotton layer 82 is filled into the fixing piece 8 through the opening, so that the heat insulation cotton layer 82 is convenient to fill and replace.
In the above technical solution, the connection surface between the inner wall of the extrusion chamber 4 and the inner wall of the circulating kneading chamber 3 is a connection transition surface 43 which is obliquely arranged. The obliquely arranged connecting transition surface 43 reduces the effect of hindering the movement of the molten plastic material, so that the molten plastic material repeatedly twisted in the circulating twisting cavity 3 can smoothly enter the extrusion cavity.
The number of apparatuses and the scale of the process described here are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (7)
1. A melting and mixing device for plastic granulation is characterized by comprising:
the first extruder is internally and rotatably provided with a driving screw, and a first feeding hole and a first discharging hole are formed in the first extruder;
the second extruder is provided with a second feeding hole and a wire outlet, and the second feeding hole is connected with the first discharging hole of the first extruder; a circulating rolling cavity and an extrusion cavity are arranged in the second extruder, and the second feed port is communicated with the circulating rolling cavity; the inside cone-shaped screw rod and the straight-bar screw rod are rotatably mounted in the second extruder, the cone-shaped screw rod and the straight-bar screw rod are fixedly arranged into a whole, the cone-shaped screw rod is located in the circulating kneading cavity, the straight-bar screw rod is located in the extrusion cavity, and the end portion of the straight-bar screw rod is located in a screw outlet of the second extruder.
2. A melt-mixing apparatus for granulating plastics as claimed in claim 1, wherein the first outlet of the first extruder is connected to the second inlet of the second extruder via a connecting pipe, one end of the connecting pipe is fixedly secured to the first outlet of the first extruder, and the other end of the connecting pipe abuts against the upper surface of the second inlet of the second extruder.
3. A melting and mixing apparatus for plastic granulation as set forth in claim 2, wherein a heat-insulating device is fixedly attached to an outside of the connecting pipe, and the heat-insulating device has a structure including:
the inner wall of the fixing piece is tightly attached to the outer wall of the connecting pipeline, an accommodating interlayer is arranged inside the fixing piece, and a plurality of heat-insulating cotton layers are filled in the accommodating interlayer; the outer surface of the fixed part is provided with an arc-shaped groove;
and the semicircular arc-shaped fasteners are embedded into the arc-shaped grooves of the fixing pieces, fixing screw holes are formed in two ends of each fastener, and the two fasteners are fixedly connected by arranging fixing bolts in the fixing screw holes.
4. A melting and kneading apparatus for granulating plastic as claimed in claim 3, wherein the connecting pipe is an L-shaped connecting pipe or a straight pipe, and the plurality of fixing members are fixed to the outside of the connecting pipe in close contact therewith.
5. A melting and mixing apparatus as claimed in claim 3, wherein the arc-shaped groove is provided with anti-slip protrusions, and the inner ring of the fastening member is provided with anti-slip stripes adapted to the anti-slip protrusions.
6. A melt-kneading apparatus for granulating plastic as claimed in claim 3, wherein said fixing member is closed at one end and has an opening at the other end.
7. A melting and mixing apparatus for pelletizing plastics according to claim 1, characterized in that the connecting surfaces of the inner wall of the extrusion chamber and the inner wall of the circulating kneading chamber are obliquely arranged connecting transition surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022254488.4U CN213412585U (en) | 2020-10-12 | 2020-10-12 | Melting and mixing device for plastic granulation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022254488.4U CN213412585U (en) | 2020-10-12 | 2020-10-12 | Melting and mixing device for plastic granulation |
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| Publication Number | Publication Date |
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| CN213412585U true CN213412585U (en) | 2021-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022254488.4U Active CN213412585U (en) | 2020-10-12 | 2020-10-12 | Melting and mixing device for plastic granulation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113733512A (en) * | 2021-09-14 | 2021-12-03 | 南京弘威橡塑机械配件有限公司 | High-speed single-double screw mixing extruder |
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2020
- 2020-10-12 CN CN202022254488.4U patent/CN213412585U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113733512A (en) * | 2021-09-14 | 2021-12-03 | 南京弘威橡塑机械配件有限公司 | High-speed single-double screw mixing extruder |
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