Double-screw rubber filtering extruder

Abstract

The utility model discloses a double-screw rubber filtering extruder and belongs to the field of rubber processing. The device comprises a partition block arranged at the end of the discharging pipe, a sliding partition block is arranged in the partition block, the whole space of the partition block is divided into two independent spaces, different raw materials falling into the discharging pipe can be stored in a partitioned mode, meanwhile, the partition block can slide according to the proportion of the raw materials, the proportion of the two spaces is changed, and the raw materials can be conveniently stored. The proportion of the raw materials is guaranteed to be unchanged during discharging, the rotating stirring rod is arranged in the discharging pipe, different raw materials can be preliminarily mixed through the stirring rod, and the mixed raw materials slide into the extrusion rack through the fan-shaped grooves in the surfaces of the two discharging blocks and are mixed and extruded under the action of the spiral rod. And one of the two blanking blocks can rotate, so that the crossed area between the adjacent fan-shaped grooves can be changed, the area of the channel through which the raw materials can pass can be changed, and the purpose of limiting the blanking speed of the raw materials is achieved.

Description

Technical Field

[0001] This utility model relates to the field of rubber processing, and in particular to a twin-screw rubber filter extruder. Background Technology

[0002] Twin-screw rubber filter extruders use two meshing screws rotating inside the barrel to convey, compress, shear, and plasticize rubber compounds. The rubber compound is forced forward by the screws, and is simultaneously heated by external barrel heating and frictional heat generated by screw shearing, gradually melting and mixing evenly. During the extrusion process, the rubber compound passes through a filter screen or filter plate inside the die head, intercepting impurities and particles to ensure the purity and quality of the extruded products.

[0003] The reference patent title is: A novel twin-screw rubber filter extruder (patent publication number: CN216032379U). By setting a limiting plate controlled by a hydraulic cylinder inside the feed pipe, the limiting plate slides to change the area of ​​the material flowable area inside the feed pipe, thereby controlling the flow rate of the material and preventing the extruder from clogging; and by opening an air outlet on the surface of the extrusion box, excess air inside the extrusion box is discharged through the air outlet.

[0004] However, the following problems exist when implementing the above technical solutions: The above devices cannot guarantee that the ratio of the two raw materials will remain unchanged during production. Generally, in the operation of a twin-screw rubber extruder, two raw materials are fed into the feed position and mixed under the action of the screw. To ensure certain properties of the finished product, the ratio of raw materials fed into the feed is subject to certain requirements. However, in the above devices, the raw materials are first fed through the feed pipe. If the feed speed of the feed pipe is lower than the feed rate, the two raw materials will accumulate inside the feed pipe. Due to differences in weight or flow characteristics, the two raw materials may separate or leak differently, thus changing the ratio when they are mixed. This makes it impossible to accurately match the dynamic requirements of the extruder for the ratio, ultimately leading to changes in the finished product ratio.

[0005] In summary, this utility model proposes a twin-screw rubber filter extruder. Utility Model Content

[0006] This invention provides a twin-screw rubber filter extruder, which can solve the problem in the prior art where different raw materials are mixed and fed simultaneously when controlling the raw material feeding speed of the twin-screw rubber extruder, making it difficult to match the dynamic requirements of the raw material ratio of the rubber extruder.

[0007] A twin-screw rubber filter extruder includes a feed pipe and an extruder frame. The feed pipe is fixedly mounted on the top of the extruder frame, and a feeding mechanism is provided between the feed pipe and the extruder frame. The feeding mechanism includes:

[0008] A partition block is fixedly disposed on the side of the feed pipe away from the extruder frame. A partition block is slidably connected inside the partition block. A limit component is provided between the partition block and the partition block. The limit component is slidably disposed inside the partition block.

[0009] A stirring rod is rotatably disposed inside a feeding pipe, and a driving assembly is provided between the stirring rod and the feeding pipe;

[0010] Two feeding blocks are provided. One feeding block is fixedly installed inside the extruder frame, and the other feeding block is rotatably installed inside the feeding tube. Adjacent feeding blocks are rotatably connected. Several fan-shaped grooves are opened on the surface of each feeding block. An adjustment component is provided between the feeding block and the extruder frame. The adjustment component is slidably installed inside the feeding block.

[0011] Optionally, a sliding rod is rotatably connected to the surface of the partition block, the sliding rod is threadedly connected to the inside of the partition block, and a sliding shaft is fixedly connected to the surface of the partition block, the sliding shaft passing through the partition block, and the sliding shaft and the sliding groove are symmetrically arranged relative to the partition block.

[0012] Optionally, a plurality of connecting blocks are fixedly connected to the surface of the partition block, two of the connecting blocks are fixedly connected to both ends of the sliding shaft, and the other two connecting blocks are rotatably connected to the sliding rod.

[0013] Optionally, the limiting component includes a limiting post slidably disposed inside the sliding rod, a limiting spring fixedly connected between the limiting post and the sliding rod, and several triangular blocks of complementary shapes fixedly connected to the opposite sides of the limiting post and the connecting block.

[0014] Optionally, an arc-shaped block is fixedly connected to the surface of the feed pipe, and a protruding column is fixedly connected to the end of the stirring rod away from the extruder frame. The arc-shaped block and the protruding column are rotatably connected.

[0015] Optionally, a drive rod is fixedly connected to the surface of the stirring rod, and the surface of the drive rod is in contact with the side of the feeding block away from the extruder frame.

[0016] Optionally, the drive assembly includes a motor fixedly mounted on the surface of the partition block, the motor being electrically connected to an external power source, a drive rod fixedly connected to the end of the motor output shaft, and reversing conical wheels fixedly connected to the surfaces of both the drive rod and the stirring rod, the two reversing conical wheels meshing with each other, and the drive rod being rotatably mounted inside the arc-shaped block.

[0017] Optionally, the adjusting component includes an adjusting column slidably disposed inside the feeding block, an adjusting gear rotatably connected to the end of the adjusting column, an adjusting groove being provided on the surface of the extruder frame, and a plurality of sliding teeth and a plurality of limiting teeth being fixedly connected to both sides of the adjusting groove, wherein the limiting teeth and the sliding teeth mesh with the adjusting gear.

[0018] Optionally, the width of the limiting tooth is smaller than that of the sliding tooth, and the limiting tooth and the sliding tooth are located on the same horizontal plane on the side away from the partition block.

[0019] Optionally, an adjusting spring is fixedly connected to the side of the adjusting gear away from the adjusting column, and a limiting column is fixedly connected to the end of the adjusting spring. A limiting groove is formed on the surface of the extruder frame, the limiting column is adapted to the limiting groove, and the limiting groove is connected to the adjusting groove.

[0020] This invention provides a twin-screw rubber filter extruder, comprising a partitioned block at the end of a feed tube, with a sliding separator block inside the partitioned block dividing the overall space of the partitioned block into two independent spaces. Different raw materials falling into the feed tube can be stored separately. The separator block can be slidable according to the proportion of the raw materials, changing the ratio of the two spaces to ensure that the raw material ratio remains constant during feeding. A rotating stirring rod is installed inside the feed tube, which can initially mix the different raw materials. The mixed raw materials slide through fan-shaped grooves on the surfaces of the two feed blocks into the extruder frame, where they are extruded under the action of the screw. One of the two feed blocks is rotatable, thus changing the intersection area between adjacent fan-shaped grooves and altering the area of ​​the material passage, thereby limiting the raw material feeding speed. Therefore, while controlling the raw material feeding speed, the separator block and stirring rod simultaneously ensure that the proportion of different raw materials entering the extruder frame meets the requirements. Attached Figure Description

[0021] Figure 1 A schematic diagram of a twin-screw rubber filter extruder provided by this utility model;

[0022] Figure 2 An exploded view of the structure of a twin-screw rubber filter extruder provided by this utility model;

[0023] Figure 3 Provided by this utility model Figure 2 Enlarged view of the local structure at point A;

[0024] Figure 4 Provided by this utility model Figure 2 Enlarged view of the local structure at point B;

[0025] Figure 5 Provided by this utility model Figure 2 Enlarged view of the local structure at point C.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Feed pipe; 2. Extruder frame; 3. Divider block; 4. Separator block; 5. Stirring rod; 6. Feed block; 7. Sector groove; 8. Sliding rod; 9. Sliding shaft; 10. Connecting block; 11. Limiting post; 12. Limiting spring; 13. Triangular block; 14. Arc block; 15. Driving rod; 16. Motor; 17. Drive rod; 18. Reversing cone wheel; 19. Adjusting post; 20. Adjusting gear; 21. Limiting tooth; 22. Sliding tooth; 23. Adjusting spring. Detailed Implementation

[0028] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0029] like Figures 1 to 5 As shown in the figure, a twin-screw rubber filter extruder provided in this embodiment of the present invention includes a feed pipe 1 and an extruder frame 2. The feed pipe 1 is fixedly disposed on the top of the extruder frame 2, and a feeding mechanism is disposed between the feed pipe 1 and the extruder frame 2. The feeding mechanism includes:

[0030] Partition block 3 is fixedly disposed on the side of the feed pipe 1 away from the extruder frame 2. A partition block 4 is slidably connected inside the partition block 3. A limit component is provided between the partition block 4 and the partition block 3. The limit component is slidably disposed inside the partition block 3.

[0031] A stirring rod 5 is rotatably disposed inside the feeding pipe 1, and a driving assembly is disposed between the stirring rod 5 and the feeding pipe 1. The driving assembly is rotatably disposed inside the feeding pipe 1.

[0032] Two feeding blocks 6 are provided. One feeding block 6 is fixedly installed inside the extruder frame 2, and the other feeding block 6 is rotatably installed inside the feeding tube 1. Adjacent feeding blocks 6 are rotatably connected. Several fan-shaped grooves 7 are opened on the surface of each feeding block 6. An adjustment component is provided between the feeding block 6 and the extruder frame 2. The adjustment component is slidably installed inside the feeding block 6.

[0033] In summary, the twin-screw rubber filter extruder provided by this utility model includes a partition block 3 disposed at the end of the feed pipe 1, and a sliding partition block 4 disposed inside the partition block 3, dividing the overall space of the partition block 3 into two independent spaces. This allows different raw materials falling into the feed pipe 1 to be stored separately. Simultaneously, the partition block 4 can be slidable according to the proportion of the raw materials, changing the ratio of the two spaces to ensure that the proportion of raw materials remains constant during feeding. Furthermore, a rotating stirring rod 5 is disposed inside the feed pipe 1, which can initially mix different raw materials. The mixed raw materials slide through the fan-shaped grooves 7 on the surfaces of the two feed blocks 6 into the extruder frame 2, where they are mixed and extruded under the action of the screw. One of the two feed blocks 6 is rotatable, thus changing the intersection area between adjacent fan-shaped grooves 7 and altering the area of ​​the passage through which the raw materials can pass, thereby limiting the raw material feeding speed. Therefore, while controlling the raw material feeding speed, the partition block 4 and stirring rod 5 simultaneously ensure that the proportion of different raw materials extruded into the extruder frame 2 meets the requirements.

[0034] In some specific implementations, a sliding rod 8 is rotatably connected to the surface of the partition block 3, and the sliding rod 8 is threadedly connected to the inside of the partition block 4. A sliding shaft 9 is fixedly connected to the surface of the partition block 3, and the sliding shaft 9 passes through the partition block 4. The sliding shaft 9 and the sliding groove are symmetrically arranged relative to the partition block 3. Through the threaded connection between the sliding rod 8 and the partition block 4, when the sliding rod 8 rotates, it can cause the partition block 4 to slide inside the partition block 3. At the same time, the sliding shaft 9, which is symmetrical to the sliding rod 8, ensures that the partition block 4 slides horizontally inside the partition block 3.

[0035] In a further embodiment, a plurality of connecting blocks 10 are fixedly connected to the surface of the partition block 3. Two of the connecting blocks 10 are fixedly connected to both ends of the sliding shaft 9, and the other two connecting blocks 10 are rotatably connected to the sliding rod 8. The positions of the connecting blocks 10 can limit the positions of the sliding rod 8 and the sliding shaft 9, and further limit the sliding distance of the partition block 4.

[0036] In some specific implementations, the limiting component includes a limiting post 11 slidably disposed inside the sliding rod 8. A limiting spring 12 is fixedly connected between the limiting post 11 and the sliding rod 8. Several triangular blocks 13 with complementary shapes are fixedly connected to the opposite sides of the limiting post 11 and the connecting block 10. When the limiting post 11 and the connecting block 10 are in contact, the triangular blocks 13 interlock with each other. The interlocking triangular blocks 13 can fix the position of the limiting post 11 through the fixed connecting block 10, so that the limiting post 11 cannot continue to rotate, thus preventing the sliding rod 8 from rotating and causing the separator block 4 to change position again.

[0037] In some specific implementations, an arc-shaped block 14 is fixedly connected to the surface of the feeding pipe 1, and a protruding column is fixedly connected to the end of the stirring rod 5 away from the extruder frame 2. The arc-shaped block 14 is rotatably connected to the protruding column. By setting the arc-shaped block 14, an arc-shaped structure is formed between the feeding pipe 1 and the partition block 3 to achieve the transition when feeding raw materials, and to divide the raw materials into different spaces of the stirring rod 5 during feeding, so as to avoid the local area of ​​raw materials being dense and to facilitate the rapid mixing of raw materials.

[0038] In a further embodiment, a drive rod 15 is fixedly connected to the surface of the stirring rod 5, and the surface of the drive rod 15 is in contact with the side of the feed block 6 away from the extruder frame 2; the drive rod 15 can push the feed block to fall off and prevent some feed block from accumulating on the bottom side of the stirring rod 5;

[0039] In some specific embodiments, the drive assembly includes a motor 16 fixedly mounted on the surface of the partition block 3. The motor 16 is electrically connected to an external power source. A drive rod 17 is fixedly connected to the end of the output shaft of the motor 16. A reversing conical wheel 18 is fixedly connected to the surface of both the drive rod 17 and the stirring rod 5, and the two reversing conical wheels 18 mesh with each other. The drive rod 17 is rotatably mounted inside the arc-shaped block 14. The rotation of the stirring rod 5 can be directly controlled by the drive rod 17 and the reversing conical wheel 18.

[0040] In some specific implementations, the adjusting assembly includes an adjusting column 19 slidably disposed inside the feeding block 6. An adjusting gear 20 is rotatably connected to the end of the adjusting column 19. An adjusting groove is formed on the surface of the extruder frame 2. Several sliding teeth 22 and several limiting teeth 21 are fixedly connected to both sides of the adjusting groove. The width of the limiting teeth 21 is smaller than that of the sliding teeth 22, and the limiting teeth 21 and the sliding teeth 22 are located on the same horizontal plane on the side away from the partition block 3. Both the limiting teeth 21 and the sliding teeth 22 mesh with the adjusting gear 20. Through the sliding teeth 22 and the limiting teeth 21 with different heights, the adjusting gear 20 can mesh with the sliding teeth 22 alone, or it can mesh with both the sliding teeth 22 and the limiting teeth 21 simultaneously. When meshed alone, the adjusting gear 20 can rotate, driving the feeding block 6 to rotate. When meshed simultaneously, the rotation of the adjusting gear 20 is restricted, thereby preventing the feeding block 6 from rotating.

[0041] In a further embodiment, an adjusting spring 23 is fixedly connected to the side of the adjusting gear 20 away from the adjusting column 19, and a limiting column 11 is fixedly connected to the end of the adjusting spring 23. A limiting groove is formed on the surface of the extruder frame 2, the limiting column 11 is adapted to the limiting groove, and the limiting groove is connected to the adjusting groove.

[0042] The working principle of this utility model:

[0043] Before using the device, first adjust the positions of the two feeding blocks 6 as needed, pull the adjusting column 19 to cause the adjusting gear 20 to mesh with the sliding gear 22 alone, pull the adjusting column 19, the adjusting gear 20 rotates, changing the position of the adjacent sector groove 7, after the position is determined, release the adjusting column 19, the adjusting column 19 resets under the action of the adjusting spring 23, the adjusting gear 20 meshes with the sliding gear 22 and the limiting gear 21 at the same time; then adjust the position of the partition block 4, pull the limiting column 11 to cause the triangular blocks 13 to disengage from each other, rotate the limiting column 11 to drive the sliding rod 8 to rotate, changing the position of the partition block 4, after the position of the partition block 4 is determined, release the limiting column 11, the limiting column 11 resets under the action of the limiting spring 12;

[0044] Using the device, start the motor 16, and put different raw materials on both sides of the separator 4. The raw materials enter the feed pipe 1 and are mixed under the action of the stirring rod 5. Then, they enter the extruder frame 2 through the fan-shaped groove 7, contact the screw, and are sheared and mixed.

[0045] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A twin-screw rubber filter extruder, characterized in that, It includes a feeding pipe (1) and an extruder frame (2), wherein the feeding pipe (1) is fixedly installed on the top of the extruder frame (2), and a feeding mechanism is provided between the feeding pipe (1) and the extruder frame (2), wherein the feeding mechanism includes: Partition block (3), the partition block (3) is fixedly disposed on the side of the feed pipe (1) away from the extruder frame (2), the partition block (3) is slidably connected to the partition block (4), and a limit component is provided between the partition block (4) and the partition block (3), the limit component is slidably disposed inside the partition block (3); A stirring rod (5) is rotatably disposed inside the feed pipe (1), and a driving assembly is provided between the stirring rod (5) and the feed pipe (1); Two feeding blocks (6) are provided. One feeding block (6) is fixedly installed inside the extruder frame (2), and the other feeding block (6) is rotatably installed inside the feeding tube (1). Adjacent feeding blocks (6) are rotatably connected. Several fan-shaped grooves (7) are opened on the surface of each feeding block (6). An adjustment component is provided between the feeding block (6) and the extruder frame (2). The adjustment component is slidably installed inside the feeding block (6).

2. The twin-screw rubber filter extruder as described in claim 1, characterized in that, A sliding rod (8) is rotatably connected to the surface of the partition block (3). The sliding rod (8) is threadedly connected to the interior of the partition block (4). A sliding shaft (9) is fixedly connected to the surface of the partition block (3). The sliding shaft (9) passes through the partition block (4). The sliding shaft (9) and the sliding groove are symmetrically arranged relative to the partition block (3).

3. The twin-screw rubber filter extruder as described in claim 2, characterized in that, Several connecting blocks (10) are fixedly connected to the surface of the partition block (3). Two of the connecting blocks (10) are fixedly connected to both ends of the sliding shaft (9), and the other two connecting blocks (10) are rotatably connected to the sliding rod (8).

4. The twin-screw rubber filter extruder as described in claim 3, characterized in that, The limiting component includes a limiting post (11) slidably disposed inside the sliding rod (8), a limiting spring (12) fixedly connected between the limiting post (11) and the sliding rod (8), and several triangular blocks (13) with complementary shapes fixedly connected to the opposite sides of the limiting post (11) and the connecting block (10).

5. A twin-screw rubber filter extruder as described in claim 1, characterized in that, An arc-shaped block (14) is fixedly connected to the surface of the feed pipe (1), and a protruding column is fixedly connected to one end of the stirring rod (5) away from the extruder frame (2). The arc-shaped block (14) is rotatably connected to the protruding column.

6. A twin-screw rubber filter extruder as described in claim 1, characterized in that, The stirring rod (5) is fixedly connected to a driving rod (15), and the surface of the driving rod (15) is in contact with the side of the feeding block (6) away from the extruder frame (2).

7. A twin-screw rubber filter extruder as described in claim 5, characterized in that, The drive assembly includes a motor (16) fixedly mounted on the surface of the partition block (3). The motor (16) is electrically connected to an external power source. A drive rod (17) is fixedly connected to the end of the output shaft of the motor (16). A reversing cone wheel (18) is fixedly connected to the surface of both the drive rod (17) and the stirring rod (5). The two reversing cone wheels (18) mesh with each other. The drive rod (17) is rotatably mounted inside the arc-shaped block (14).

8. A twin-screw rubber filter extruder as described in claim 1, characterized in that, The adjustment assembly includes an adjustment column (19) slidably disposed inside the feed block (6). An adjustment gear (20) is rotatably connected to the end of the adjustment column (19). An adjustment groove is provided on the surface of the extruder frame (2). Several sliding teeth (22) and several limiting teeth (21) are fixedly connected to both sides of the adjustment groove. The limiting teeth (21) and the sliding teeth (22) are both engaged with the adjustment gear (20).

9. A twin-screw rubber filter extruder as described in claim 8, characterized in that, The width of the limiting tooth (21) is smaller than that of the sliding tooth (22), and the limiting tooth (21) and the sliding tooth (22) are located on the same horizontal plane on the side away from the partition block (3).

10. A twin-screw rubber filter extruder as described in claim 8, characterized in that, An adjusting spring (23) is fixedly connected to the side of the adjusting gear (20) away from the adjusting column (19). A limiting column (11) is fixedly connected to the end of the adjusting spring (23). A limiting groove is opened on the surface of the extruder frame (2). The limiting column (11) is adapted to the limiting groove. The limiting groove is connected to the adjusting groove.

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