XPE material extruder
By introducing mixing blades and shearing wheel devices into the XPE material extruder, combined with the design of internal and external discharge ports, the problem of material inhomogeneity is solved, uniform mixing and stable discharge of materials are achieved, and product quality is improved.
Patent Information
- Application Number
- CN202421510132.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-06-28
AI Technical Summary
The existing XPE material extruders have material unevenness problems during the extrusion process, resulting in inconsistent product quality, especially the viscosity problems caused by uneven heat distribution and crosslinking agent distribution during the crosslinking process.
The mixing blade and shear device at the tail end of the screw extruder are adopted, combined with the inner and outer discharge port design, and through the coordination of the screw and the shear wheel, the material is uniformly mixed and sheared, and the viscosity influence is reduced.
Improves the uniformity and stability of materials, ensures the consistency of product quality, and reduces the impact of viscosity on discharge.
Smart Images
Figure CN223058329U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of material extruders, and specifically relates to an XPE material extruder. Background Art
[0002] The viscosity of XPE (cross-linked polyethylene) material during the extrusion process is relatively high compared to other non-cross-linked polymers. The cross-linking process increases the intermolecular links, thereby increasing the melt strength of the material. Thus, a greater pressure is required during extrusion to process the molten polymer with a higher viscosity. When using a single-screw extruder, in order to ensure product quality and processing efficiency, it is necessary to appropriately re-homogenize (or homogenize) the XPE material. This is mainly because during the extrusion and cross-linking processes, the material may have non-uniform physical properties due to non-uniform heat distribution, uneven distribution of cross-linking agents, or other reasons. The existing extruders lack further homogenization of the material, resulting in inconsistent internal distribution of the obtained product and affecting the product quality. Content of the Utility Model
[0003] In view of the above deficiencies, the utility model adopts the following technical solutions:
[0004] An XPE material extruder includes a box body. There is a feed hopper above the box body. There is a fixing plate on the outer side of the bottom of the feed hopper. The fixing plate is attached along the inner wall of the box body. There is a feed port at the bottom of the feed hopper. Below the feed port is the screw extrusion barrel. There is a screw inside the screw extrusion barrel. One end of the screw passes through one end of the screw extrusion barrel and is connected to a rotating motor. The other end of the screw extrusion barrel passes through the box body, and there is a mixing blade on the screw at the end position. The tail end of the screw is connected with a tail cone. There is a conical platform opposite to the top of the tail cone. There is a shearing wheel at the connection position between the tail cone and the conical platform. There is a conical feed barrel with the opposite direction at the tail of the conical platform. There are several feed holes on the outer wall of the conical feed barrel. There is a conical block inside the conical feed barrel. The tail cone, the conical platform, and the conical feed barrel are covered by a conical shell arranged at the tail end of the screw extrusion barrel.
[0005] Further, the rotating motor is fixed on the outer wall of the box body.
[0006] Further, the mixing blade is in the shape of a turbine fan blade and rotates in the opposite direction to the screw.
[0007] Further, there are several shearing blades on the outside of the shearing wheel, and there is a motor inside the shearing wheel.
[0008] Further, an inner discharge port is formed between the conical block and the inner wall of the conical feed cylinder, an outer discharge port is formed between the conical feed cylinder and the inner wall of the conical shell, a discharge nozzle is provided at the top of the conical shell, a discharge port is provided in the discharge nozzle, and the discharge port communicates with the inner discharge port and the outer discharge port at the same time.
[0009] The beneficial effects of the present utility model are as follows: 1. Through the setting of the mixing blades and the shearing device at the tail end of the screw extruder, the discharged material becomes more uniform. Through the further mixing of the inner and outer discharge ports, the uniformity of the discharge is further improved. Through the cooperation of the screw and the shearing wheel, the influence of viscosity on the discharge is reduced. Description of the Drawings
[0010] Figure 1 is a schematic cross-sectional structure diagram of the present utility model;
[0011] Figure 2 is an enlarged view of the tail end of the schematic cross-sectional structure diagram of the present utility model;
[0012] Figure 3 is a schematic diagram of the internal structure of the present utility model.
[0013] In the figure: 1 - box body, 2 - feed hopper, 3 - feed port, 4 - fixed plate, 5 - screw extrusion cylinder, 6 - screw, 7 - rotating motor, 8 - mixing blade, 9 - tail cone, 10 - frustum, 11 - shearing wheel, 12 - conical feed cylinder, 13 - feed hole, 14 - conical block, 15 - inner discharge port, 16 - discharge nozzle, 17 - outer discharge port, 18 - conical shell, 19 - discharge port. Detailed Embodiments
[0014] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0015] Combined with Figures 1 to 3 shown:
[0016] An XPE material extruder includes a box body 1. Above the box body 1, there is a feed hopper 2. On the outer side of the bottom of the feed hopper 2, there is a fixing plate 4 which is attached along the inner wall of the box body 1. At the bottom of the feed hopper 2, there is a feed port 3. Below the feed port 3, there is a screw extrusion barrel 5. Inside the screw extrusion barrel 5, there is a screw 6. One end of the screw 6 passes through one end of the screw extrusion barrel 5 and is connected to a rotating motor 7. The other end of the screw extrusion barrel 5 passes through the box body. And on the end screw 6, there is a mixing blade 8. At the tail end of the screw 6, there is a tail cone 9. At the top of the tail cone 9, there is a frustum 10 in the opposite direction. At the connection position between the tail cone 9 and the frustum 10, there is a shearing wheel 11. At the tail of the frustum 10, there is a conical feed barrel 12 in the opposite direction. On the outer wall of the conical feed barrel 12, there are several feed holes 13. Inside the conical feed barrel 12, there is a conical block 14. The tail cone 9, the frustum 10 and the conical feed barrel 12 are covered by a conical shell 18 arranged at the tail end of the screw extrusion barrel 5. In this utility model, by arranging a heating device around the part where the screw extrusion barrel 5 passes through the box body 1 to melt the material, the uniformity of the material heating inside the screw extrusion barrel 5 is ensured.
[0017] The rotating motor 7 is fixed on the outer wall of the box body 1 and is used to drive the screw 6 to rotate, so that the screw extrusion barrel 5 extrudes the material.
[0018] The mixing blade 8 is in the shape of a turbine fan blade and rotates in the opposite direction to the screw 6. The mixing blade 8 can rotate around the screw 6. On the outside of the shearing wheel 11, there are several shearing blades. The shape and direction of the shearing blades adopt a rotary knife structure or other shapes according to the actual situation. Inside the shearing wheel 11, there is a motor which drives the shearing wheel to rotate, so that the shearing blades shear the molten material.
[0019] Between the conical block 14 and the inner wall of the conical feed barrel 12, there is an inner discharge port 15. Between the conical feed barrel 12 and the inner wall of the conical shell 18, there is an outer discharge port 17. At the top of the conical shell 18, there is a discharge nozzle 16 for discharging materials. Inside the discharge nozzle 16, there is a discharge port 19. The size of the discharge port 19 can be used to control the discharge speed. The discharge port 19 is connected to both the inner discharge port 15 and the outer discharge port 15 at the same time, so that the materials in the inner and outer discharge ports are mixed together, making the material mixing more uniform.
[0020] Working principle:
[0021] The material enters the screw extrusion barrel through the feed port, moves to the heated position of the screw extrusion barrel under the action of the screw, melts, and after further transportation and mixing by the screw, the material drives the mixing blade to rotate in the reverse direction, so that the material is stirred and divided. Then, through the arranged shearing wheel, the material is sheared to reduce a certain viscosity, and at the same time, the uniformity of the material mixing at this time is ensured. Finally, through the feed holes, the material is divided and flows through the inner and outer discharge ports and is further mixed, increasing the mixing uniformity again, and ensuring the uniform and stable material properties of the discharged materials.
[0022] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.
[0023] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. An XPE material extruder, characterized in that: It includes a box body (1), above which there is a feed hopper (2). On the outer side of the bottom of the feed hopper (2), there is a fixing plate (4) which is attached along the inner wall of the box body (1). At the bottom of the feed hopper (2), there is a feed inlet (3). Below the feed inlet (3), there is a screw extrusion barrel (5). Inside the screw extrusion barrel (5), there is a screw (6). One end of the screw (6) passes through one end of the screw extrusion barrel (5) and is connected to a rotary motor (7). The other end of the screw extrusion barrel (5) passes through the box body, and there is a mixing blade (8) on the screw (6) at the end position. The tail end of the screw (6) is connected with a tail cone (9). At the top of the tail cone (9), there is a frustum (10) in the opposite direction. At the connection position between the tail cone (9) and the frustum (10), there is a shearing wheel (11). At the tail of the frustum (10), there is a conical feed barrel (12) in the opposite direction. On the outer wall of the conical feed barrel (12), there are several feed holes (13). Inside the conical feed barrel (12), there is a conical block (14). The tail cone (9), the frustum (10) and the conical feed barrel (12) are covered by a conical shell (18) arranged at the tail end of the screw extrusion barrel (5).
2. An XPE material extruder according to claim 1, characterized in that: The rotary motor (7) is fixed on the outer wall of the box body (1).
3. An XPE material extruder according to claim 1, characterized in that: The mixing blade (8) is in the shape of a turbine fan blade and has a reverse rotation direction to that of the screw (6).
4. An XPE material extruder according to claim 1, characterized in that: On the outer side of the shearing wheel (11), there are several shearing blades, and inside the shearing wheel (11), there is a motor.
5. An XPE material extruder according to claim 1, characterized in that: Between the conical block (14) and the inner wall of the conical feed barrel (12), there is an inner discharge port (15). Between the conical feed barrel (12) and the inner wall of the conical shell (18), there is an outer discharge port (17). At the top of the conical shell (18), there is a discharge nozzle (16). Inside the discharge nozzle (16), there is a discharge port (19), and the discharge port (19) is connected to both the inner discharge port (15) and the outer discharge port (17) at the same time.