Combined hopper for extruder

Abstract

The utility model relates to the technical field of extruders, in particular to a combined hopper for an extruder, which comprises a disc-shaped lower hopper, a middle hopper is detachably connected onto the lower hopper, an upper hopper is detachably connected onto the middle hopper, and the sizes of the lower hopper, the middle hopper and the upper hopper are gradually increased in sequence. And chamber holes for guiding materials into the extruder are formed in the lower hopper, the middle hopper and the upper hopper. The outer walls of the end walls of the tops of the lower hopper, the middle hopper and the guide cylinder are threaded walls, the lower hopper is screwed into the middle discharge port in a rotating thread mode and connected with the middle hopper, the middle hopper is screwed into the upper discharge port in a rotating thread mode and connected with the upper hopper, the lower hopper, the middle hopper and the upper hopper are sequentially connected together in an assembled mode to form a whole, and at the moment, the whole structure is large in size and large in material receiving range. The utility model is used for adapting to larger types of extruders in a larger environment and adapting to smaller types of extruders in a smaller environment after being disassembled.

Description

Technical Field

[0001] This utility model relates to the field of extruder technology, and in particular to a combined bin for an extruder. Background Technology

[0002] Screw extruders rely on the pressure and shear force generated by the rotation of the screw to fully plasticize and uniformly mix materials, which are then formed through a die. Plastic extruders can be basically classified into twin-screw extruders, single-screw extruders, and less common multi-screw extruders and screwless extruders. During processing, extruders use a hopper structure to guide materials into the extruder.

[0003] Extruder hoppers have a simple structure, typically a disc-shaped structure that is wider at the top and narrower at the bottom. They are used to receive and guide materials into the extruder. Because the hopper structure is simple and is a fixed, one-piece structure with fixed dimensions, while extruders vary in size and the space they are installed in varies, the hopper can only be installed in a single environment and for a single type of extruder, resulting in poor adaptability. Utility Model Content

[0004] The purpose of this invention is to provide a combined bin for an extruder.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A combined hopper for an extruder includes a disc-shaped lower hopper, a middle hopper detachably connected to the lower hopper, and an upper hopper detachably connected to the middle hopper. The dimensions of the lower hopper, middle hopper, and upper hopper increase sequentially. Each of the lower hopper, middle hopper, and upper hopper has a chamber for guiding material into the extruder. Each of the lower hopper and middle hopper has a fixed block fixed to its top sidewall. A threaded hole is provided at the center end wall of each fixed block.

[0007] Preferably, the chamber includes a lower cavity opened inside the lower hopper and a lower outlet that penetrates through the center end wall of the bottom of the lower hopper and communicates with the lower cavity.

[0008] Preferably, the chamber includes a central cavity opened in the middle of the central hopper and a central drain outlet passing through the bottom wall of the central cavity near the central hopper.

[0009] Preferably, the chamber includes an upper cavity opened inside the upper bucket and an upper discharge port passing through the center of the bottom wall of the upper cavity near the upper bucket.

[0010] Preferably, the top end wall of the lower bucket is threadedly connected to the middle bucket through the middle outlet, while the middle bucket is threadedly connected to the upper bucket through the upper outlet.

[0011] Preferably, a pair of circular screw ports are symmetrically distributed about the upper outlet at the bottom end wall of the upper chamber near the upper bucket. A guide cylinder is threaded into the screw ports. The guide cylinder is cylindrical at the top and bent at the bottom to form a duckbill shape. A cylinder cavity is opened inside the guide cylinder. A cylinder port communicating with the cylinder cavity is passed through the front and rear walls of the top of the guide cylinder.

[0012] This utility model has at least the following beneficial effects:

[0013] The lower bucket, middle bucket, and the outer wall of the top end of the guide cylinder are threaded. The lower bucket rotates and is screwed into the middle outlet to connect with the middle bucket. The middle bucket rotates and is screwed into the upper outlet to connect with the upper bucket. The lower bucket, middle bucket, and upper bucket are then connected together in sequence to form a whole. At this point, the entire structure has a large volume and a large material receiving range, making it suitable for extruders in larger environments and of larger types. After disassembly, it can be adapted to extruders in smaller environments and of smaller types. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the present invention;

[0016] Figure 2 for Figure 1 A schematic diagram of the lower chamber and lower outlet at the lower bucket;

[0017] Figure 3 for Figure 1 A top-down view of the bucket;

[0018] Figure 4 for Figure 1 A schematic diagram of the guide tube.

[0019] In the diagram: 1. Lower bucket; 2. Lower cavity; 3. Lower outlet; 4. Middle bucket; 5. Middle cavity; 6. Upper bucket; 7. Upper cavity; 8. Solid block; 9. Threaded hole; 10. Threaded port; 11. Guide cylinder; 12. Cylinder cavity; 13. Cylinder opening; 14. Middle outlet; 15. Upper outlet. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] Please see Figure 1-4 This utility model provides a technical solution for a combined bin for an extruder:

[0022] like Figure 1-4 As shown, a combined hopper for an extruder includes a disc-shaped lower hopper 1, a middle hopper 4 detachably connected to the lower hopper 1, and an upper hopper 6 detachably connected to the middle hopper 4. The dimensions of the lower hopper 1, middle hopper 4, and upper hopper 6 increase sequentially. The lower hopper 1, middle hopper 4, and upper hopper 6 are provided with chambers for guiding materials into the extruder. The top side walls of the lower hopper 1 and middle hopper 4 are fixedly connected to each other with solid blocks 8, and the center end wall of the solid block 8 is provided with a threaded hole 9.

[0023] The chamber includes a lower cavity 2 opened inside the lower hopper 1 and a lower outlet 3 that penetrates through the central end wall of the bottom of the lower hopper 1 and communicates with the lower cavity 2. The chamber includes a middle cavity 5 opened in the middle of the middle hopper 4 and a middle outlet 14 that penetrates through the bottom end wall of the middle hopper 4 near the middle cavity 5.

[0024] The chamber includes an upper cavity 7 opened inside the upper bucket 6, an upper outlet 15 passing through the center of the bottom wall of the upper bucket 6 near the upper cavity 7, and the top wall of the lower bucket 1 is threaded to the middle bucket 4 through the middle outlet 14. At the same time, the middle bucket 4 is threaded to the upper bucket 6 through the upper outlet 15.

[0025] A pair of circular threaded ports 10 are symmetrically distributed around the upper outlet 15 at the bottom end wall of the upper chamber 7 near the upper bucket 6. A guide cylinder 11 is threaded inside the threaded port 10. The upper part of the guide cylinder 11 is cylindrical and the lower part is bent into a duckbill shape. A cylinder cavity 12 is opened inside the guide cylinder 11. A cylinder opening 13 that communicates with the cylinder cavity 12 is passed through the front and rear walls of the top of the guide cylinder 11.

[0026] Working principle:

[0027] The lower bucket 1, the middle bucket 4, and the outer wall of the top end of the guide cylinder 11 are threaded walls. The lower bucket 1 is screwed into the middle discharge port 14 by rotating the thread, forming a connection with the middle bucket 4. The middle bucket 4 is screwed into the upper discharge port 15 by rotating the thread, forming a connection with the upper bucket 6. The lower bucket 1, the middle bucket 4, and the upper bucket 6 are sequentially connected together to form a whole. At this time, the entire structure has a large volume and a large material receiving range, which is suitable for adapting to larger environments and larger types of extruders.

[0028] The lower bucket 1, middle bucket 4, and upper bucket 6 are detachable. The upper bucket 6 or the middle bucket 4 can be removed and used individually. The middle bucket 4 and the lower bucket 1 can be combined, or the middle bucket 4 and the upper bucket 6 can be combined and used individually. The combined volume is different. After selection, it is suitable for smaller extruders in smaller environments. When used in combination, the adaptability is stronger.

[0029] During assembly, the threaded hole 9 at the end wall of the solid block 8 is used to connect the bolts, which are then connected to the threaded hole at the end wall of the extruder inlet to form a connection, facilitating the installation of the hopper structure and the extruder structure.

[0030] During material discharge, the upper cavity 7, upper discharge port 15, middle cavity 5, middle discharge port 14, lower cavity 2, and lower discharge port 3 guide the material and discharge it downwards.

[0031] The screw inlet 10 is threadedly connected to the guide cylinder 11. When the guide cylinder 11 is rotated, it is positioned exactly in the screw inlet 10, blocking the screw inlet 10. When the guide cylinder 11 is rotated upward, it protrudes from the top of the screw inlet 10. At this time, the cylinder opening 13 of the guide cylinder 11 extends into the upper cavity 7. The material is received at the cylinder opening 13 and flows down along the cylinder cavity 12. It is discharged after passing through the duckbill-shaped end formed by the bend at the bottom of the guide cylinder 11, which facilitates the lateral and individual guidance of the material, guiding the material to the adjacent extruder.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A combined hopper for an extruder, comprising a disc-shaped lower hopper (1), characterized in that, The lower bucket (1) is detachably connected to the middle bucket (4), and the middle bucket (4) is detachably connected to the upper bucket (6). The dimensions of the lower bucket (1), middle bucket (4), and upper bucket (6) increase sequentially. The lower bucket (1), middle bucket (4), and upper bucket (6) are provided with chambers for guiding materials into the extruder. The top side walls of the lower bucket (1) and middle bucket (4) are fixedly connected to each other. The center end wall of the fixed block (8) is provided with a threaded hole (9).

2. The combined bin for an extruder according to claim 1, characterized in that, The chamber includes a lower cavity (2) opened inside the lower bucket (1) and a lower outlet (3) that penetrates the center end wall of the bottom of the lower bucket (1) and communicates with the lower cavity (2).

3. The combined bin for an extruder according to claim 2, characterized in that, The chamber includes a central cavity (5) opened in the middle of the central hopper (4) and a central drain outlet (14) passing through the bottom wall of the central hopper (4) near the central cavity (5).

4. The combined bin for an extruder according to claim 3, characterized in that, The chamber includes an upper cavity (7) opened inside the upper bucket (6) and an upper outlet (15) passing through the center of the bottom wall of the upper bucket (6) near the upper cavity (7).

5. A combined bin for an extruder according to claim 4, characterized in that, The top end wall of the lower bucket (1) is threadedly connected to the middle bucket (4) through the middle outlet (14), while the middle bucket (4) is threadedly connected to the upper bucket (6) through the upper outlet (15).

6. A combined bin for an extruder according to claim 5, characterized in that, The upper bucket (6) has a pair of circular screw ports (10) symmetrically distributed about the upper outlet (15) at the bottom end wall of the upper cavity (7). The screw ports (10) are threaded with a guide cylinder (11). The guide cylinder (11) is cylindrical at the top and bent at the bottom to form a duckbill shape. The guide cylinder (11) has a cavity (12) inside. The guide cylinder (11) has a cylinder opening (13) that communicates with the cavity (12) through the front and rear walls at the top of the guide cylinder (11).

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