CN205009560U - Coaxial serial -type toper extrusion device of multistage - Google Patents

Abstract

The utility model relates to a multi-segment coaxial series conical extrusion device, which comprises a conical barrel, an electric heating ring, an extruder head, a hopper and a seat; One and the third radial bearing group, the first and the second transmission mechanism, the first and the second motor, the transition gear, the first and the third gear, the first and the third thrust bearing; The third helical groove group is provided on the shaped part, the second helical groove group is provided on the conical part of the second conical wheel shaft, the first helical groove group is provided on the conical part of the first conical wheel shaft, and the first conical The conical part of the wheel shaft, the tapered part of the second conical wheel shaft and the conical part of the third conical wheel shaft are arranged horizontally in series to form the crushing, grinding, extrusion, mixing and transportation channels of materials; the conical barrel It is sheathed outside the tapered part of the first tapered wheel shaft, the tapered part of the second tapered wheel shaft and the tapered part of the third tapered wheel shaft. Its advantages are: the process of plasticizing, mixing and extruding is optimized, the quality of plasticized extruded products is improved and the efficiency is increased.

Description

Multi-stage coaxial series conical extrusion device

technical field

The invention relates to a multi-stage coaxial series conical extrusion device, which can be used for crushing, mixing, grinding, extrusion, molding, etc. in the processing of polymer materials, synthetic fibers, pulp, feed, food, etc. crafting process.

Background technique

In the fields of plastics, rubber and other industries, crushing, grinding, kneading and extrusion of materials are important processing methods and means. Ordinary screw extrusion devices have limited functions for crushing, shearing and grinding materials, especially when the materials are subjected to strong grinding and mixing, this shortcoming is even more prominent.

In order to overcome the shortcomings of ordinary screw machines, some machines use conical screws.

Chinese patent "conical screw plastic extruder", the screw is conical, and the closer to the discharge port, the denser the screw edge, the screw shear force and the crushing of the material are improved by changing the screw pitch and screw diameter Ability to improve product quality.

Chinese patent "Differential conical three-screw extruder with triangular arrangement of screws", in which three conical screws are arranged in a triangle, which realizes differential rotation and enhances the mixing capacity.

The Chinese patent "Differential Conical Three-screw Extruder with Inline Arrangement of Screws" has three conical screws that can rotate at a differential speed in the barrel, arranged in an inline. When working, the three screws mesh with each other to form two meshing Area. The special screw structure and arrangement enhance the effect of mixing and exhausting.

The Chinese patent "conical co-rotating twin-screw extruder" has a main conical screw and a secondary conical screw in the barrel, and the two screws rotate in the same direction. Compared with ordinary twin-screw extruders , extrusion quality and efficiency are improved.

Although the above several conical screw extruders have overcome the shortcomings of ordinary screw extruders, they all have the problems of plasticizing performance, mixing ability, grinding ability and extrusion ability, which will eventually affect the plasticizing extrusion. quality and efficiency.

The Chinese patent "composite co-extrusion conical screw extruder" is equipped with two nested inner and outer conical screws in its barrel, which can help to improve extrusion efficiency and quality, but it is mainly used for compound co-extrusion Extrusion, not very suitable for processing such as mixing and extrusion.

Contents of the invention

The purpose of the utility model is to provide a multi-stage coaxial series conical extruder to optimize the plasticizing, mixing and extruding process, improve the quality of plasticized extruded products and increase the efficiency.

In order to achieve the above object, the utility model is achieved in this way, it is a multi-stage coaxial series conical extrusion device, including a conical barrel, an electric heating coil, an extruder head, a hopper and a seat; it is characterized in that It also includes a first conical axle, a first radial bearing group, a second conical axle, a third conical axle, a first transmission mechanism, a first motor, a transition gear, a first gear, a second motor, and a second transmission mechanism, the first thrust bearing, the second thrust bearing, the second gear, the third thrust bearing, the third gear, the second radial bearing set and the third radial bearing set; wherein

A third spiral groove group is provided on the tapered part of the third tapered wheel shaft, and the third tapered wheel shaft is installed and positioned through its own bushing, the third radial bearing group, the third thrust bearing and the seat;

A second helical groove group is provided on the tapered portion of the second tapered wheel shaft. The second tapered wheel shaft is installed and positioned through its own bushing, the second radial bearing group, the second thrust bearing and the seat. The axle sleeve of the second tapered wheel shaft and the second radial bearing group are located in the center hole of the third tapered wheel shaft;

A first spiral groove group is provided on the tapered part of the first tapered wheel shaft, and the first tapered wheel shaft is installed and positioned through its own shaft, the first radial bearing group, the first thrust bearing and the seat, and the shaft and The first radial bearing group is located in the central hole of the second tapered axle;

The tapered parts of the first tapered wheel shaft, the tapered parts of the second tapered wheel shaft and the tapered parts of the third tapered wheel shaft are arranged horizontally successively, and the tapered parts of the first tapered wheel shaft and the second tapered wheel shaft The contact part of the conical part of the second conical wheel axle is sealed and fit, the conical part of the second conical wheel shaft is in sealing fit with the contact part of the conical part of the third conical wheel shaft, the first helical groove group, the second helical groove group and the third helical groove group The spiral groove groups are connected in series in turn to form the crushing, grinding, extrusion, mixing and transportation channels of materials;

The tapered machine barrel is sleeved on the tapered part of the first tapered wheel shaft, the tapered part of the second tapered wheel shaft and the tapered part of the third tapered wheel shaft. The tapered machine barrel, the first tapered wheel shaft , The second conical wheel shaft and the third conical wheel shaft are all coaxial; the electric heating coil is set outside the tapered machine barrel;

The hopper is installed on the right side of the tapered barrel; the right end of the third spiral groove group communicates with the hopper, and the left end of the first spiral groove group communicates with the discharge port of the extruder head;

The second motor drives the first conical wheel shaft to rotate through the second transmission mechanism and the first gear; the first motor drives the second conical wheel shaft to rotate through the first transmission mechanism, transition gear and second gear, and the first A transmission mechanism drives the third cone axle to rotate through the third gear.

The first helical groove group of the tapered part of the first conical wheel shaft is opposite to the second helical groove group of the tapered part of the second conical wheel shaft, and the first helical groove group of the tapered part of the second conical wheel shaft The second helical groove group is opposite to the third helical groove group at the tapered part of the third tapered wheel shaft.

The rotation direction of the first tapered wheel shaft is opposite to that of the second tapered wheel shaft, and the rotation direction of the second tapered wheel shaft is opposite to that of the third tapered wheel shaft.

A heat-resistant sealing ring for sealing is provided at the contact portion between the tapered portion of the first tapered wheel shaft and the tapered portion of the second tapered wheel shaft.

Compared with the prior art, the utility model has the following advantages:

1. The conical axle structure can give full play to the advantages of different structural components. At the beginning of material mixing and extrusion, due to the large diameter of the conical axle, it has strong crushing, mixing and grinding capabilities, so it can be significantly improved. Crushing, mixing and grinding effects, and in the direction close to the extruder head, due to the small diameter of the conical wheel shaft, which is close to the diameter of the ordinary screw, it also has the advantage of strong transport capacity of the screw extruder, combining both It not only has the advantages of crushing, grinding and mixing of disc machines, but also has the advantages of strong conveying capacity.

2. In the multi-segment conical wheel shaft structure, the spiral groove groups on the outer circumference of each adjacent two-segment conical wheel shaft not only have the opposite direction of screw grooves, but also the opposite direction of rotation of the conical wheel shafts, so that the materials can be transported, crushed and extruded as a whole. During the pressing process, the transportation channel is constantly changing, the direction of the screw groove is constantly changing, and the rotation direction of the conical wheel shaft is constantly changing, so that when the material is sheared and ground, it can be mixed, crushed, and crushed step by step in the constantly changing material channel. Shearing, fusion and plasticization also enhance the quality and efficiency of grinding, and also increase the mixing, mass and heat transfer between materials, and improve the quality of products.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of the first tapered axle;

Fig. 3 is a three-dimensional schematic view of the first tapered axle;

Fig. 4 is the structural representation of the second tapered axle;

Fig. 5 is the three-dimensional schematic view of the second tapered axle;

Fig. 6 is the structural representation of the 3rd tapered axle;

Fig. 7 is a schematic perspective view of the third tapered axle.

detailed description

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model will be further described. It should be noted here that the descriptions of these implementations are used to help understand the utility model, but are not intended to limit the utility model. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute conflicts with each other.

In the description of the present utility model, the orientation or positional relationship indicated by the terms "left" and "right" are based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the utility model and does not require that the utility model must be based on Specific orientation configurations and operations, therefore, should not be construed as limitations on the invention.

In the description of the present invention, the terms "first", "second" and "third" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

As shown in Figures 1 to 7, it is a multi-stage coaxial series conical extrusion device, including a conical barrel 1, a heating coil 2, an extruder head 4, a first conical wheel shaft 5, a first direction Core bearing group 6, second conical wheel shaft 7, third conical wheel shaft 8, hopper 9, seat 10, first transmission mechanism 11, first motor 12, transition gear 13, first gear 14, second motor 15 , the second transmission mechanism 16, the first thrust bearing 17, the second thrust bearing 18, the second gear 19, the third thrust bearing 20, the third gear 21, the second radial bearing group 22 and the third radial bearing group 23 ;in

A third helical groove group 81 is provided on the tapered part of the third tapered wheel shaft 8, and the third tapered wheel shaft 8 passes through its shaft sleeve 82, the third radial bearing group 23, the third thrust bearing 20 and the seat 10 installation positioning;

A second helical groove group 71 is provided on the tapered part of the second tapered wheel shaft 7, and the second tapered wheel shaft 7 passes through its own axle sleeve 72, the second radial bearing group 22 and the second thrust bearing 18 and The seat 10 is installed and positioned, wherein the shaft sleeve 72 of the second tapered wheel shaft 7 and the second radial bearing group 22 are located in the center hole 821 of the third tapered wheel shaft 8, and the shaft sleeve 72 of the second tapered wheel shaft 7 is in the Can rotate in the center hole 821 of the 3rd conical axle 8;

A first helical groove group 51 is provided on the tapered portion of the first tapered wheel shaft 5, and the first tapered wheel shaft 5 passes through its own shaft 52, the first centripetal bearing group 6, the first thrust bearing 17 and the seat. Child 10 is installed and positioned, and the shaft 52 of the first conical wheel shaft 5 and the first radial bearing group 6 are positioned in the central hole 721 of the second conical wheel shaft 7, and the shaft 52 of the first conical wheel shaft 5 is positioned at the center hole 721 of the second conical wheel shaft. 7 can be rotated in the center hole 721;

The tapered parts of the first tapered wheel shaft 5, the tapered parts of the second tapered wheel shaft 7 and the tapered parts of the third tapered wheel shaft 8 are arranged horizontally successively, and the tapered parts of the first tapered wheel shaft 5 and the second tapered wheel shaft are arranged horizontally. The contact parts of the tapered parts of the second tapered wheel shaft 7 are in sealing fit, the tapered parts of the second tapered wheel shaft 7 are in sealing fit with the contact parts of the tapered parts of the third tapered wheel shaft 8, and the first spiral groove group 51, The second helical groove group 71 and the third helical groove group 81 are sequentially connected in series to form material crushing, grinding, extrusion, mixing and transportation channels;

The tapered machine barrel 1 is sleeved outside the tapered part of the first tapered wheel shaft 5, the tapered part of the second tapered wheel shaft 7 and the tapered part of the third tapered wheel shaft 8, the tapered machine barrel 1, The first conical axle 5, the second conical axle 7 and the third conical axle 8 are all coaxial; the electric heating ring 2 is sleeved outside the conical barrel 1;

The hopper 9 is installed on the right side of the tapered barrel 1; the right end of the third helical groove group 81 communicates with the hopper 9, and the left end of the first helical groove group 51 is connected to the discharge port of the extruder head 4 connected;

The second motor 15 drives the first conical wheel shaft 5 to rotate through the second transmission mechanism 16 and the first gear 14; The conical axle 7 rotates, and the first transmission mechanism 11 drives the third conical axle 8 to rotate through the third gear 21 .

In this embodiment, the first helical groove group 51 at the tapered part of the first conical wheel shaft 5 is in the opposite direction to the second helical groove group 71 at the tapered part of the second conical wheel shaft 7 , and the first The second helical groove group 71 on the tapered part of the second tapered wheel shaft 7 is opposite to the third helical groove group 81 on the tapered part of the third tapered wheel shaft 8 .

In this embodiment, the rotation direction of the first conical hub 5 is opposite to that of the second conical hub 7 , and the rotation direction of the second conical hub 7 is opposite to that of the third conical hub 8 .

When working, the material enters the third helical groove group 81 of the third conical wheel shaft 8 from the hopper 9, moves forward under the push of the screw edge, and then passes through the second helical groove group 71 of the second conical wheel shaft 7 and the first The first helical groove group 51 of the conical hub 5 is finally extruded from the extruder head 4 and enters the molding die.

In this embodiment, a heat-resistant sealing ring 3 for sealing is provided at the contact portion between the tapered portion of the first tapered wheel shaft 5 and the tapered portion of the second tapered wheel shaft 7 .

The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings, but the present utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and deformations to these embodiments without departing from the principle and purpose of the present invention still fall within the protection scope of the present invention.

Claims (3)

1. A multi-stage coaxial series-type conical extrusion device, including a conical barrel (1), a heating coil (2), an extruder head (4), a hopper (9) and a seat (10); It is characterized in that it also includes a first tapered wheel shaft (5), a first radial bearing group (6), a second tapered wheel shaft (7), a third tapered wheel shaft (8), a first transmission mechanism (11), a second A motor (12), transition gear (13), first gear (14), second motor (15), second transmission mechanism (16), first thrust bearing (17), second thrust bearing (18), The second gear (19), the third thrust bearing (20), the third gear (21), the second radial bearing group (22) and the third radial bearing group (23); where A third spiral groove group (81) is provided on the tapered part of the third tapered wheel shaft (8), and the third tapered wheel shaft (8) passes through its own bushing (82), the third radial bearing group (23) and the third thrust bearing (20) and seat (10) are installed and positioned; A second helical groove group (71) is provided on the tapered part of the second tapered wheel shaft (7), and the second tapered wheel shaft (7) passes through its own shaft sleeve (72), the second radial bearing group (22) and the second thrust bearing (18) and seat (10) are installed and positioned, and the shaft sleeve (72) of the second tapered axle (7) and the second radial bearing group (22) are located on the third tapered axle (8) in the center hole (821); A first helical groove group (51) is provided on the tapered portion of the first tapered wheel shaft (5), and the first tapered wheel shaft (5) passes through its own shaft (52), the first radial bearing group ( 6) and the first thrust bearing (17) and seat (10) are installed and positioned, the shaft (52) and the first radial bearing group (6) are located in the center hole of the second tapered wheel shaft (7); The tapered parts of the first tapered wheel shaft (5), the tapered parts of the second tapered wheel shaft (7) and the tapered parts of the third tapered wheel shaft (8) are arranged horizontally in sequence, and the first tapered wheel shaft ( 5) and the contact part of the tapered part of the second tapered axle (7) is sealed and matched, and the tapered part of the second tapered axle (7) and the tapered part of the third tapered axle (8) The contact parts are sealed and matched, and the first spiral groove group (51), the second spiral groove group (71) and the third spiral groove group (81) are connected in series in sequence to form the crushing, grinding, extrusion, mixing and transportation of materials. aisle; The tapered barrel (1) is sleeved on the tapered part of the first tapered wheel shaft (5), the tapered part of the second tapered wheel shaft (7) and the tapered part of the third tapered wheel shaft (8) Outside, the tapered machine barrel (1), the first tapered wheel shaft (5), the second tapered wheel shaft (7) and the third tapered wheel shaft (8) are all coaxial; the electric heating ring (2) is sleeved on Outside the tapered barrel (1); The hopper (9) is installed on the right side of the tapered barrel (1); the right end of the third spiral groove group (81) communicates with the hopper (9), and the left end of the first spiral groove group (51) It communicates with the discharge port of the extruder head (4); The second motor (15) drives the first conical wheel shaft (5) to rotate through the second transmission mechanism (16) and the first gear (14); the first motor (12) passes the first transmission mechanism (11) 1. The transition gear (13) and the second gear (19) drive the second conical axle (7) to rotate, and the first transmission mechanism (11) drives the third conical axle (8) to rotate through the third gear (21) . 2. The multi-stage coaxial tandem conical extrusion device according to claim 1, characterized in that the first helical groove group (51) and the second cone at the conical part of the first conical wheel shaft (5) The second helical groove group (71) of the tapered part of the conical wheel shaft (7) has the opposite direction of rotation, and the second helical groove group (71) of the tapered part of the second conical wheel shaft (7) is the same as the third conical The third helical groove group (81) at the tapered portion of the wheel shaft (8) has opposite directions of rotation. 3. The multi-stage coaxial tandem conical extrusion device according to claim 1, characterized in that the rotation direction of the first conical wheel shaft (5) is opposite to that of the second conical wheel shaft (7), and the second conical wheel shaft (7) The direction of rotation of the conical axle (7) is opposite to that of the third conical axle (8).